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| Current File : //compat/linux/proc/self/root/home/usr.opt/mysql57/mysql-test/r/func_group.result |
drop table if exists t1,t2;
set @sav_dpi= @@div_precision_increment;
set div_precision_increment= 5;
show variables like 'div_precision_increment';
Variable_name Value
div_precision_increment 5
create table t1 (grp int, a bigint unsigned, c char(10) not null);
insert into t1 values (1,1,"a");
insert into t1 values (2,2,"b");
insert into t1 values (2,3,"c");
insert into t1 values (3,4,"E");
insert into t1 values (3,5,"C");
insert into t1 values (3,6,"D");
select a,c,sum(a) from t1 group by a;
a c sum(a)
1 a 1
2 b 2
3 c 3
4 E 4
5 C 5
6 D 6
select a,c,sum(a) from t1 where a > 10 group by a;
a c sum(a)
select sum(a) from t1 where a > 10;
sum(a)
NULL
select a from t1 order by rand(10);
a
2
6
1
3
5
4
select distinct a from t1 order by rand(10);
a
2
6
1
3
5
4
select count(distinct a),count(distinct grp) from t1;
count(distinct a) count(distinct grp)
6 3
insert into t1 values (null,null,'');
select count(distinct a),count(distinct grp) from t1;
count(distinct a) count(distinct grp)
6 3
select sum(all a),count(all a),avg(all a),std(all a),variance(all a),bit_or(all a),bit_and(all a),min(all a),max(all a),min(all c),max(all c) from t1;
sum(all a) count(all a) avg(all a) std(all a) variance(all a) bit_or(all a) bit_and(all a) min(all a) max(all a) min(all c) max(all c)
21 6 3.50000 1.707825127659933 2.9166666666666665 7 0 1 6 E
select grp, sum(a),count(a),avg(a),std(a),variance(a),bit_or(a),bit_and(a),min(a),max(a),min(c),max(c) from t1 group by grp;
grp sum(a) count(a) avg(a) std(a) variance(a) bit_or(a) bit_and(a) min(a) max(a) min(c) max(c)
NULL NULL 0 NULL NULL NULL 0 18446744073709551615 NULL NULL
1 1 1 1.00000 0 0 1 1 1 1 a a
2 5 2 2.50000 0.5 0.25 3 2 2 3 b c
3 15 3 5.00000 0.816496580927726 0.6666666666666666 7 4 4 6 C E
select grp, sum(a)+count(a)+avg(a)+std(a)+variance(a)+bit_or(a)+bit_and(a)+min(a)+max(a)+min(c)+max(c) as sum from t1 group by grp;
grp sum
NULL NULL
1 7
2 20.25
3 45.48316324759439
create table t2 (grp int, a bigint unsigned, c char(10));
insert into t2 select grp,max(a)+max(grp),max(c) from t1 group by grp;
replace into t2 select grp, a, c from t1 limit 2,1;
select * from t2;
grp a c
NULL NULL
1 2 a
2 5 c
3 9 E
2 3 c
drop table t1,t2;
CREATE TABLE t1 (id int(11),value1 float(10,2));
INSERT INTO t1 VALUES (1,0.00),(1,1.00), (1,2.00), (2,10.00), (2,11.00), (2,12.00);
CREATE TABLE t2 (id int(11),name char(20));
INSERT INTO t2 VALUES (1,'Set One'),(2,'Set Two');
select id, avg(value1), std(value1), variance(value1) from t1 group by id;
id avg(value1) std(value1) variance(value1)
1 1.0000000 0.816496580927726 0.6666666666666666
2 11.0000000 0.816496580927726 0.6666666666666666
select name, avg(value1), std(value1), variance(value1) from t1, t2 where t1.id = t2.id group by t1.id;
name avg(value1) std(value1) variance(value1)
Set One 1.0000000 0.816496580927726 0.6666666666666666
Set Two 11.0000000 0.816496580927726 0.6666666666666666
drop table t1,t2;
create table t1 (id int not null);
create table t2 (id int not null,rating int null);
insert into t1 values(1),(2),(3);
insert into t2 values(1, 3),(2, NULL),(2, NULL),(3, 2),(3, NULL);
select t1.id, avg(rating) from t1 left join t2 on ( t1.id = t2.id ) group by t1.id;
id avg(rating)
1 3.00000
2 NULL
3 2.00000
select sql_small_result t2.id, avg(rating) from t2 group by t2.id;
id avg(rating)
1 3.00000
2 NULL
3 2.00000
select sql_big_result t2.id, avg(rating) from t2 group by t2.id;
id avg(rating)
1 3.00000
2 NULL
3 2.00000
select sql_small_result t2.id, avg(rating+0.0e0) from t2 group by t2.id;
id avg(rating+0.0e0)
1 3
2 NULL
3 2
select sql_big_result t2.id, avg(rating+0.0e0) from t2 group by t2.id;
id avg(rating+0.0e0)
1 3
2 NULL
3 2
drop table t1,t2;
create table t1 (a smallint(6) primary key, c char(10), b text);
INSERT INTO t1 VALUES (1,'1','1');
INSERT INTO t1 VALUES (2,'2','2');
INSERT INTO t1 VALUES (4,'4','4');
select count(*) from t1;
count(*)
3
select count(*) from t1 where a = 1;
count(*)
1
select count(*) from t1 where a = 100;
count(*)
0
select count(*) from t1 where a >= 10;
count(*)
0
select count(a) from t1 where a = 1;
count(a)
1
select count(a) from t1 where a = 100;
count(a)
0
select count(a) from t1 where a >= 10;
count(a)
0
select count(b) from t1 where b >= 2;
count(b)
2
select count(b) from t1 where b >= 10;
count(b)
0
select count(c) from t1 where c = 10;
count(c)
0
drop table t1;
CREATE TABLE t1 (d DATETIME, i INT);
INSERT INTO t1 VALUES (NOW(), 1);
SELECT COUNT(i), i, COUNT(i)*i FROM t1 GROUP BY i;
COUNT(i) i COUNT(i)*i
1 1 1
SELECT COUNT(i), (i+0), COUNT(i)*(i+0) FROM t1 GROUP BY i;
COUNT(i) (i+0) COUNT(i)*(i+0)
1 1 1
DROP TABLE t1;
create table t1 (
num float(5,2),
user char(20)
);
insert into t1 values (10.3,'nem'),(20.53,'monty'),(30.23,'sinisa');
insert into t1 values (30.13,'nem'),(20.98,'monty'),(10.45,'sinisa');
insert into t1 values (5.2,'nem'),(8.64,'monty'),(11.12,'sinisa');
select sum(num) from t1;
sum(num)
147.58
select sum(num) from t1 group by user;
sum(num)
50.15
45.63
51.80
drop table t1;
create table t1 (a1 int, a2 char(3), key k1(a1), key k2(a2));
insert into t1 values(10,'aaa'), (10,null), (10,'bbb'), (20,'zzz');
create table t2(a1 char(3), a2 int, a3 real, key k1(a1), key k2(a2, a1));
select * from t1;
a1 a2
10 aaa
10 NULL
10 bbb
20 zzz
select min(a2) from t1;
min(a2)
aaa
select max(t1.a1), max(t2.a2) from t1, t2;
max(t1.a1) max(t2.a2)
NULL NULL
select max(t1.a1) from t1, t2;
max(t1.a1)
NULL
select max(t2.a2), max(t1.a1) from t1, t2;
max(t2.a2) max(t1.a1)
NULL NULL
explain select min(a2) from t1;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
Warnings:
Note 1003 /* select#1 */ select min(`test`.`t1`.`a2`) AS `min(a2)` from `test`.`t1`
explain select max(t1.a1), max(t2.a2) from t1, t2;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL No matching min/max row
Warnings:
Note 1003 /* select#1 */ select max(`test`.`t1`.`a1`) AS `max(t1.a1)`,max(`test`.`t2`.`a2`) AS `max(t2.a2)` from `test`.`t1` join `test`.`t2`
insert into t2 values('AAA', 10, 0.5);
insert into t2 values('BBB', 20, 1.0);
select t1.a1, t1.a2, t2.a1, t2.a2 from t1,t2;
a1 a2 a1 a2
10 aaa AAA 10
10 aaa BBB 20
10 NULL AAA 10
10 NULL BBB 20
10 bbb AAA 10
10 bbb BBB 20
20 zzz AAA 10
20 zzz BBB 20
select max(t1.a1), max(t2.a1) from t1, t2 where t2.a2=9;
max(t1.a1) max(t2.a1)
NULL NULL
select max(t2.a1), max(t1.a1) from t1, t2 where t2.a2=9;
max(t2.a1) max(t1.a1)
NULL NULL
select t1.a1, t1.a2, t2.a1, t2.a2 from t1 left outer join t2 on t1.a1=10;
a1 a2 a1 a2
10 NULL AAA 10
10 NULL BBB 20
10 aaa AAA 10
10 aaa BBB 20
10 bbb AAA 10
10 bbb BBB 20
20 zzz NULL NULL
select max(t1.a2) from t1 left outer join t2 on t1.a1=10;
max(t1.a2)
zzz
select max(t2.a1) from t2 left outer join t1 on t2.a2=10 where t2.a2=20;
max(t2.a1)
BBB
select max(t2.a1) from t2 left outer join t1 on t2.a2=10 where t2.a2=10;
max(t2.a1)
AAA
select max(t2.a1) from t1 left outer join t2 on t1.a2=t2.a1 and 1=0 where t2.a1='AAA';
max(t2.a1)
NULL
select max(t1.a2),max(t2.a1) from t1 left outer join t2 on t1.a1=10;
max(t1.a2) max(t2.a1)
zzz BBB
drop table t1,t2;
CREATE TABLE t1 (a int, b int);
select count(b), sum(b), avg(b), std(b), min(b), max(b), bit_and(b), bit_or(b) from t1;
count(b) sum(b) avg(b) std(b) min(b) max(b) bit_and(b) bit_or(b)
0 NULL NULL NULL NULL NULL 18446744073709551615 0
select a,count(b), sum(b), avg(b), std(b), min(b), max(b), bit_and(b), bit_or(b) from t1 group by a;
a count(b) sum(b) avg(b) std(b) min(b) max(b) bit_and(b) bit_or(b)
insert into t1 values (1,null);
select a,count(b), sum(b), avg(b), std(b), min(b), max(b), bit_and(b), bit_or(b) from t1 group by a;
a count(b) sum(b) avg(b) std(b) min(b) max(b) bit_and(b) bit_or(b)
1 0 NULL NULL NULL NULL NULL 18446744073709551615 0
insert into t1 values (1,null);
insert into t1 values (2,null);
select a,count(b), sum(b), avg(b), std(b), min(b), max(b), bit_and(b), bit_or(b) from t1 group by a;
a count(b) sum(b) avg(b) std(b) min(b) max(b) bit_and(b) bit_or(b)
1 0 NULL NULL NULL NULL NULL 18446744073709551615 0
2 0 NULL NULL NULL NULL NULL 18446744073709551615 0
select SQL_BIG_RESULT a,count(b), sum(b), avg(b), std(b), min(b), max(b), bit_and(b), bit_or(b) from t1 group by a;
a count(b) sum(b) avg(b) std(b) min(b) max(b) bit_and(b) bit_or(b)
1 0 NULL NULL NULL NULL NULL 18446744073709551615 0
2 0 NULL NULL NULL NULL NULL 18446744073709551615 0
insert into t1 values (2,1);
select a,count(b), sum(b), avg(b), std(b), min(b), max(b), bit_and(b), bit_or(b) from t1 group by a;
a count(b) sum(b) avg(b) std(b) min(b) max(b) bit_and(b) bit_or(b)
1 0 NULL NULL NULL NULL NULL 18446744073709551615 0
2 1 1 1.00000 0 1 1 1 1
select SQL_BIG_RESULT a,count(b), sum(b), avg(b), std(b), min(b), max(b), bit_and(b), bit_or(b) from t1 group by a;
a count(b) sum(b) avg(b) std(b) min(b) max(b) bit_and(b) bit_or(b)
1 0 NULL NULL NULL NULL NULL 18446744073709551615 0
2 1 1 1.00000 0 1 1 1 1
insert into t1 values (3,1);
select a,count(b), sum(b), avg(b), std(b), min(b), max(b), bit_and(b), bit_or(b) from t1 group by a;
a count(b) sum(b) avg(b) std(b) min(b) max(b) bit_and(b) bit_or(b)
1 0 NULL NULL NULL NULL NULL 18446744073709551615 0
2 1 1 1.00000 0 1 1 1 1
3 1 1 1.00000 0 1 1 1 1
select SQL_BIG_RESULT a,count(b), sum(b), avg(b), std(b), min(b), max(b), bit_and(b), bit_or(b), bit_xor(b) from t1 group by a;
a count(b) sum(b) avg(b) std(b) min(b) max(b) bit_and(b) bit_or(b) bit_xor(b)
1 0 NULL NULL NULL NULL NULL 18446744073709551615 0 0
2 1 1 1.00000 0 1 1 1 1 1
3 1 1 1.00000 0 1 1 1 1 1
explain extended select SQL_BIG_RESULT a,count(b), sum(b), avg(b), std(b), min(b), max(b), bit_and(b), bit_or(b), bit_xor(b) from t1 group by a;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 5 100.00 Using filesort
Warnings:
Warning 1681 'EXTENDED' is deprecated and will be removed in a future release.
Note 1003 /* select#1 */ select sql_big_result `test`.`t1`.`a` AS `a`,count(`test`.`t1`.`b`) AS `count(b)`,sum(`test`.`t1`.`b`) AS `sum(b)`,avg(`test`.`t1`.`b`) AS `avg(b)`,std(`test`.`t1`.`b`) AS `std(b)`,min(`test`.`t1`.`b`) AS `min(b)`,max(`test`.`t1`.`b`) AS `max(b)`,bit_and(`test`.`t1`.`b`) AS `bit_and(b)`,bit_or(`test`.`t1`.`b`) AS `bit_or(b)`,bit_xor(`test`.`t1`.`b`) AS `bit_xor(b)` from `test`.`t1` group by `test`.`t1`.`a`
drop table t1;
create table t1 (col int);
insert into t1 values (-1), (-2), (-3);
select bit_and(col), bit_or(col) from t1;
bit_and(col) bit_or(col)
18446744073709551612 18446744073709551615
select SQL_BIG_RESULT bit_and(col), bit_or(col) from t1 group by col;
bit_and(col) bit_or(col)
18446744073709551613 18446744073709551613
18446744073709551614 18446744073709551614
18446744073709551615 18446744073709551615
drop table t1;
create table t1 (a int);
select avg(2) from t1;
avg(2)
NULL
drop table t1;
create table t1(
a1 char(3) primary key,
a2 smallint,
a3 char(3),
a4 real,
a5 date,
key k1(a2,a3),
key k2(a4 desc,a1),
key k3(a5,a1)
);
create table t2(
a1 char(3) primary key,
a2 char(17),
a3 char(2),
a4 char(3),
key k1(a3, a2),
key k2(a4)
);
insert into t1 values('AME',0,'SEA',0.100,date'1942-02-19');
insert into t1 values('HBR',1,'SEA',0.085,date'1948-03-05');
insert into t1 values('BOT',2,'SEA',0.085,date'1951-11-29');
insert into t1 values('BMC',3,'SEA',0.085,date'1958-09-08');
insert into t1 values('TWU',0,'LAX',0.080,date'1969-10-05');
insert into t1 values('BDL',0,'DEN',0.080,date'1960-11-27');
insert into t1 values('DTX',1,'NYC',0.080,date'1961-05-04');
insert into t1 values('PLS',1,'WDC',0.075,date'1949-01-02');
insert into t1 values('ZAJ',2,'CHI',0.075,date'1960-06-15');
insert into t1 values('VVV',2,'MIN',0.075,date'1959-06-28');
insert into t1 values('GTM',3,'DAL',0.070,date'1977-09-23');
insert into t1 values('SSJ',null,'CHI',null,date'1974-03-19');
insert into t1 values('KKK',3,'ATL',null,null);
insert into t1 values('XXX',null,'MIN',null,null);
insert into t1 values('WWW',1,'LED',null,null);
insert into t2 values('TKF','Seattle','WA','AME');
insert into t2 values('LCC','Los Angeles','CA','TWU');
insert into t2 values('DEN','Denver','CO','BDL');
insert into t2 values('SDC','San Diego','CA','TWU');
insert into t2 values('NOL','New Orleans','LA','GTM');
insert into t2 values('LAK','Los Angeles','CA','TWU');
insert into t2 values('AAA','AAA','AA','AME');
select * from t1;
a1 a2 a3 a4 a5
AME 0 SEA 0.1 1942-02-19
HBR 1 SEA 0.085 1948-03-05
BOT 2 SEA 0.085 1951-11-29
BMC 3 SEA 0.085 1958-09-08
TWU 0 LAX 0.08 1969-10-05
BDL 0 DEN 0.08 1960-11-27
DTX 1 NYC 0.08 1961-05-04
PLS 1 WDC 0.075 1949-01-02
ZAJ 2 CHI 0.075 1960-06-15
VVV 2 MIN 0.075 1959-06-28
GTM 3 DAL 0.07 1977-09-23
SSJ NULL CHI NULL 1974-03-19
KKK 3 ATL NULL NULL
XXX NULL MIN NULL NULL
WWW 1 LED NULL NULL
select * from t2;
a1 a2 a3 a4
TKF Seattle WA AME
LCC Los Angeles CA TWU
DEN Denver CO BDL
SDC San Diego CA TWU
NOL New Orleans LA GTM
LAK Los Angeles CA TWU
AAA AAA AA AME
explain
select min(a1) from t1;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
Warnings:
Note 1003 /* select#1 */ select min(`test`.`t1`.`a1`) AS `min(a1)` from `test`.`t1`
select min(a1) from t1;
min(a1)
AME
explain
select max(a4) from t1;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
Warnings:
Note 1003 /* select#1 */ select max(`test`.`t1`.`a4`) AS `max(a4)` from `test`.`t1`
select max(a4) from t1;
max(a4)
0.1
explain
select min(a5), max(a5) from t1;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
Warnings:
Note 1003 /* select#1 */ select min(`test`.`t1`.`a5`) AS `min(a5)`,max(`test`.`t1`.`a5`) AS `max(a5)` from `test`.`t1`
select min(a5), max(a5) from t1;
min(a5) max(a5)
1942-02-19 1977-09-23
explain
select min(a3) from t1 where a2 = 2;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
Warnings:
Note 1003 /* select#1 */ select min(`test`.`t1`.`a3`) AS `min(a3)` from `test`.`t1` where multiple equal(2, `test`.`t1`.`a2`)
select min(a3) from t1 where a2 = 2;
min(a3)
CHI
explain
select min(a1), max(a1) from t1 where a4 = 0.080;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
Warnings:
Note 1003 /* select#1 */ select min(`test`.`t1`.`a1`) AS `min(a1)`,max(`test`.`t1`.`a1`) AS `max(a1)` from `test`.`t1` where (`test`.`t1`.`a4` = 0.080)
select min(a1), max(a1) from t1 where a4 = 0.080;
min(a1) max(a1)
BDL TWU
explain
select min(t1.a5), max(t2.a3) from t1, t2;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
Warnings:
Note 1003 /* select#1 */ select min(`test`.`t1`.`a5`) AS `min(t1.a5)`,max(`test`.`t2`.`a3`) AS `max(t2.a3)` from `test`.`t1` join `test`.`t2`
select min(t1.a5), max(t2.a3) from t1, t2;
min(t1.a5) max(t2.a3)
1942-02-19 WA
explain
select min(t1.a3), max(t2.a2) from t1, t2 where t1.a2 = 0 and t2.a3 = 'CA';
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
Warnings:
Note 1003 /* select#1 */ select min(`test`.`t1`.`a3`) AS `min(t1.a3)`,max(`test`.`t2`.`a2`) AS `max(t2.a2)` from `test`.`t1` join `test`.`t2` where (multiple equal(0, `test`.`t1`.`a2`) and multiple equal('CA', `test`.`t2`.`a3`))
select min(t1.a3), max(t2.a2) from t1, t2 where t1.a2 = 0 and t2.a3 = 'CA';
min(t1.a3) max(t2.a2)
DEN San Diego
explain
select min(a1) from t1 where a1 > 'KKK';
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
Warnings:
Note 1003 /* select#1 */ select min(`test`.`t1`.`a1`) AS `min(a1)` from `test`.`t1` where (`test`.`t1`.`a1` > 'KKK')
select min(a1) from t1 where a1 > 'KKK';
min(a1)
PLS
explain
select min(a1) from t1 where a1 >= 'KKK';
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
Warnings:
Note 1003 /* select#1 */ select min(`test`.`t1`.`a1`) AS `min(a1)` from `test`.`t1` where (`test`.`t1`.`a1` >= 'KKK')
select min(a1) from t1 where a1 >= 'KKK';
min(a1)
KKK
explain
select max(a3) from t1 where a2 = 2 and a3 < 'SEA';
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
Warnings:
Note 1003 /* select#1 */ select max(`test`.`t1`.`a3`) AS `max(a3)` from `test`.`t1` where ((`test`.`t1`.`a3` < 'SEA') and multiple equal(2, `test`.`t1`.`a2`))
select max(a3) from t1 where a2 = 2 and a3 < 'SEA';
max(a3)
MIN
explain
select max(a5) from t1 where a5 < date'1970-01-01';
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
Warnings:
Note 1003 /* select#1 */ select max(`test`.`t1`.`a5`) AS `max(a5)` from `test`.`t1` where (`test`.`t1`.`a5` < DATE'1970-01-01')
select max(a5) from t1 where a5 < date'1970-01-01';
max(a5)
1969-10-05
explain
select max(a3) from t1 where a2 is null;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
Warnings:
Note 1003 /* select#1 */ select max(`test`.`t1`.`a3`) AS `max(a3)` from `test`.`t1` where isnull(`test`.`t1`.`a2`)
select max(a3) from t1 where a2 is null;
max(a3)
MIN
explain
select max(a3) from t1 where a2 = 0 and a3 between 'K' and 'Q';
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
Warnings:
Note 1003 /* select#1 */ select max(`test`.`t1`.`a3`) AS `max(a3)` from `test`.`t1` where ((`test`.`t1`.`a3` between 'K' and 'Q') and multiple equal(0, `test`.`t1`.`a2`))
select max(a3) from t1 where a2 = 0 and a3 between 'K' and 'Q';
max(a3)
LAX
explain
select min(a1), max(a1) from t1 where a1 between 'A' and 'P';
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
Warnings:
Note 1003 /* select#1 */ select min(`test`.`t1`.`a1`) AS `min(a1)`,max(`test`.`t1`.`a1`) AS `max(a1)` from `test`.`t1` where (`test`.`t1`.`a1` between 'A' and 'P')
select min(a1), max(a1) from t1 where a1 between 'A' and 'P';
min(a1) max(a1)
AME KKK
explain
select max(a3) from t1 where a3 < 'SEA' and a2 = 2 and a3 <= 'MIN';
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
Warnings:
Note 1003 /* select#1 */ select max(`test`.`t1`.`a3`) AS `max(a3)` from `test`.`t1` where ((`test`.`t1`.`a3` < 'SEA') and (`test`.`t1`.`a3` <= 'MIN') and multiple equal(2, `test`.`t1`.`a2`))
select max(a3) from t1 where a3 < 'SEA' and a2 = 2 and a3 <= 'MIN';
max(a3)
MIN
explain
select max(a3) from t1 where a3 = 'MIN' and a2 = 2;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
Warnings:
Note 1003 /* select#1 */ select max(`test`.`t1`.`a3`) AS `max(a3)` from `test`.`t1` where (multiple equal('MIN', `test`.`t1`.`a3`) and multiple equal(2, `test`.`t1`.`a2`))
select max(a3) from t1 where a3 = 'MIN' and a2 = 2;
max(a3)
MIN
explain
select max(a3) from t1 where a3 = 'DEN' and a2 = 2;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL No matching min/max row
Warnings:
Note 1003 /* select#1 */ select max(`test`.`t1`.`a3`) AS `max(a3)` from `test`.`t1` where (multiple equal('DEN', `test`.`t1`.`a3`) and multiple equal(2, `test`.`t1`.`a2`))
select max(a3) from t1 where a3 = 'DEN' and a2 = 2;
max(a3)
NULL
explain
select max(t1.a3), min(t2.a2) from t1, t2 where t1.a2 = 2 and t1.a3 < 'MIN' and t2.a3 = 'CA';
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
Warnings:
Note 1003 /* select#1 */ select max(`test`.`t1`.`a3`) AS `max(t1.a3)`,min(`test`.`t2`.`a2`) AS `min(t2.a2)` from `test`.`t1` join `test`.`t2` where ((`test`.`t1`.`a3` < 'MIN') and multiple equal(2, `test`.`t1`.`a2`) and multiple equal('CA', `test`.`t2`.`a3`))
select max(t1.a3), min(t2.a2) from t1, t2 where t1.a2 = 2 and t1.a3 < 'MIN' and t2.a3 = 'CA';
max(t1.a3) min(t2.a2)
CHI Los Angeles
explain
select max(a3) from t1 where a2 is null and a2 = 2;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
Warnings:
Note 1003 /* select#1 */ select max(`test`.`t1`.`a3`) AS `max(a3)` from `test`.`t1` where 0
select max(a3) from t1 where a2 is null and a2 = 2;
max(a3)
NULL
explain
select max(a2) from t1 where a2 >= 1;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
Warnings:
Note 1003 /* select#1 */ select max(`test`.`t1`.`a2`) AS `max(a2)` from `test`.`t1` where (`test`.`t1`.`a2` >= 1)
select max(a2) from t1 where a2 >= 1;
max(a2)
3
explain
select min(a3) from t1 where a2 = 2 and a3 < 'SEA';
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
Warnings:
Note 1003 /* select#1 */ select min(`test`.`t1`.`a3`) AS `min(a3)` from `test`.`t1` where ((`test`.`t1`.`a3` < 'SEA') and multiple equal(2, `test`.`t1`.`a2`))
select min(a3) from t1 where a2 = 2 and a3 < 'SEA';
min(a3)
CHI
explain
select min(a3) from t1 where a2 = 4;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL No matching min/max row
Warnings:
Note 1003 /* select#1 */ select min(`test`.`t1`.`a3`) AS `min(a3)` from `test`.`t1` where multiple equal(4, `test`.`t1`.`a2`)
select min(a3) from t1 where a2 = 4;
min(a3)
NULL
explain
select min(a3) from t1 where a2 = 2 and a3 > 'SEA';
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL No matching min/max row
Warnings:
Note 1003 /* select#1 */ select min(`test`.`t1`.`a3`) AS `min(a3)` from `test`.`t1` where ((`test`.`t1`.`a3` > 'SEA') and multiple equal(2, `test`.`t1`.`a2`))
select min(a3) from t1 where a2 = 2 and a3 > 'SEA';
min(a3)
NULL
explain
select (min(a4)+max(a4))/2 from t1;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
Warnings:
Note 1003 /* select#1 */ select ((min(`test`.`t1`.`a4`) + max(`test`.`t1`.`a4`)) / 2) AS `(min(a4)+max(a4))/2` from `test`.`t1`
select (min(a4)+max(a4))/2 from t1;
(min(a4)+max(a4))/2
0.085
explain
select min(a3) from t1 where 2 = a2;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
Warnings:
Note 1003 /* select#1 */ select min(`test`.`t1`.`a3`) AS `min(a3)` from `test`.`t1` where multiple equal(2, `test`.`t1`.`a2`)
select min(a3) from t1 where 2 = a2;
min(a3)
CHI
explain
select max(a3) from t1 where a2 = 2 and 'SEA' > a3;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
Warnings:
Note 1003 /* select#1 */ select max(`test`.`t1`.`a3`) AS `max(a3)` from `test`.`t1` where (('SEA' > `test`.`t1`.`a3`) and multiple equal(2, `test`.`t1`.`a2`))
select max(a3) from t1 where a2 = 2 and 'SEA' > a3;
max(a3)
MIN
explain
select max(a3) from t1 where a2 = 2 and 'SEA' < a3;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL No matching min/max row
Warnings:
Note 1003 /* select#1 */ select max(`test`.`t1`.`a3`) AS `max(a3)` from `test`.`t1` where (('SEA' < `test`.`t1`.`a3`) and multiple equal(2, `test`.`t1`.`a2`))
select max(a3) from t1 where a2 = 2 and 'SEA' < a3;
max(a3)
NULL
explain
select min(a3) from t1 where a2 = 2 and a3 >= 'CHI';
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
Warnings:
Note 1003 /* select#1 */ select min(`test`.`t1`.`a3`) AS `min(a3)` from `test`.`t1` where ((`test`.`t1`.`a3` >= 'CHI') and multiple equal(2, `test`.`t1`.`a2`))
select min(a3) from t1 where a2 = 2 and a3 >= 'CHI';
min(a3)
CHI
explain
select min(a3) from t1 where a2 = 2 and a3 >= 'CHI' and a3 < 'SEA';
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
Warnings:
Note 1003 /* select#1 */ select min(`test`.`t1`.`a3`) AS `min(a3)` from `test`.`t1` where ((`test`.`t1`.`a3` >= 'CHI') and (`test`.`t1`.`a3` < 'SEA') and multiple equal(2, `test`.`t1`.`a2`))
select min(a3) from t1 where a2 = 2 and a3 >= 'CHI' and a3 < 'SEA';
min(a3)
CHI
explain
select min(a3) from t1 where a2 = 2 and a3 >= 'CHI' and a3 = 'MIN';
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
Warnings:
Note 1003 /* select#1 */ select min(`test`.`t1`.`a3`) AS `min(a3)` from `test`.`t1` where (multiple equal(2, `test`.`t1`.`a2`) and multiple equal('MIN', `test`.`t1`.`a3`))
select min(a3) from t1 where a2 = 2 and a3 >= 'CHI' and a3 = 'MIN';
min(a3)
MIN
explain
select min(a3) from t1 where a2 = 2 and a3 >= 'SEA' and a3 = 'MIN';
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
Warnings:
Note 1003 /* select#1 */ select min(`test`.`t1`.`a3`) AS `min(a3)` from `test`.`t1` where 0
select min(a3) from t1 where a2 = 2 and a3 >= 'SEA' and a3 = 'MIN';
min(a3)
NULL
explain
select min(t1.a1), min(t2.a4) from t1,t2 where t1.a1 < 'KKK' and t2.a4 < 'KKK';
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
Warnings:
Note 1003 /* select#1 */ select min(`test`.`t1`.`a1`) AS `min(t1.a1)`,min(`test`.`t2`.`a4`) AS `min(t2.a4)` from `test`.`t1` join `test`.`t2` where ((`test`.`t1`.`a1` < 'KKK') and (`test`.`t2`.`a4` < 'KKK'))
select min(t1.a1), min(t2.a4) from t1,t2 where t1.a1 < 'KKK' and t2.a4 < 'KKK';
min(t1.a1) min(t2.a4)
AME AME
explain
select min(a1) from t1 where a1 > 'KKK' or a1 < 'XXX';
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL index PRIMARY PRIMARY 3 NULL 15 55.55 Using where; Using index
Warnings:
Note 1003 /* select#1 */ select min(`test`.`t1`.`a1`) AS `min(a1)` from `test`.`t1` where ((`test`.`t1`.`a1` > 'KKK') or (`test`.`t1`.`a1` < 'XXX'))
explain
select min(a1) from t1 where a1 != 'KKK';
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL index PRIMARY PRIMARY 3 NULL 15 100.00 Using where; Using index
Warnings:
Note 1003 /* select#1 */ select min(`test`.`t1`.`a1`) AS `min(a1)` from `test`.`t1` where (`test`.`t1`.`a1` <> 'KKK')
explain
select max(a3) from t1 where a2 < 2 and a3 < 'SEA';
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL range k1 k1 3 NULL 6 33.33 Using where; Using index
Warnings:
Note 1003 /* select#1 */ select max(`test`.`t1`.`a3`) AS `max(a3)` from `test`.`t1` where ((`test`.`t1`.`a2` < 2) and (`test`.`t1`.`a3` < 'SEA'))
explain
select max(t1.a3), min(t2.a2) from t1, t2 where t1.a2 = 2 and t1.a3 < 'MIN' and t2.a3 > 'CA';
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL range k1 k1 7 NULL 1 100.00 Using where; Using index
1 SIMPLE t2 NULL range k1 k1 3 NULL 4 100.00 Using where; Using index; Using join buffer (Block Nested Loop)
Warnings:
Note 1003 /* select#1 */ select max(`test`.`t1`.`a3`) AS `max(t1.a3)`,min(`test`.`t2`.`a2`) AS `min(t2.a2)` from `test`.`t1` join `test`.`t2` where ((`test`.`t1`.`a2` = 2) and (`test`.`t1`.`a3` < 'MIN') and (`test`.`t2`.`a3` > 'CA'))
explain
select min(a4 - 0.01) from t1;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL index NULL k2 12 NULL 15 100.00 Using index
Warnings:
Note 1003 /* select#1 */ select min((`test`.`t1`.`a4` - 0.01)) AS `min(a4 - 0.01)` from `test`.`t1`
explain
select max(a4 + 0.01) from t1;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL index NULL k2 12 NULL 15 100.00 Using index
Warnings:
Note 1003 /* select#1 */ select max((`test`.`t1`.`a4` + 0.01)) AS `max(a4 + 0.01)` from `test`.`t1`
explain
select min(a3) from t1 where (a2 +1 ) is null;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL index NULL k1 7 NULL 15 100.00 Using where; Using index
Warnings:
Note 1003 /* select#1 */ select min(`test`.`t1`.`a3`) AS `min(a3)` from `test`.`t1` where isnull((`test`.`t1`.`a2` + 1))
explain
select min(a3) from t1 where (a2 + 1) = 2;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL index NULL k1 7 NULL 15 100.00 Using where; Using index
Warnings:
Note 1003 /* select#1 */ select min(`test`.`t1`.`a3`) AS `min(a3)` from `test`.`t1` where ((`test`.`t1`.`a2` + 1) = 2)
explain
select min(a3) from t1 where 2 = (a2 + 1);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL index NULL k1 7 NULL 15 100.00 Using where; Using index
Warnings:
Note 1003 /* select#1 */ select min(`test`.`t1`.`a3`) AS `min(a3)` from `test`.`t1` where (2 = (`test`.`t1`.`a2` + 1))
explain
select min(a2) from t1 where a2 < 2 * a2 - 8;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL index NULL k1 7 NULL 15 33.33 Using where; Using index
Warnings:
Note 1003 /* select#1 */ select min(`test`.`t1`.`a2`) AS `min(a2)` from `test`.`t1` where (`test`.`t1`.`a2` < ((2 * `test`.`t1`.`a2`) - 8))
explain
select min(a1) from t1 where a1 between a3 and 'KKK';
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL ALL PRIMARY NULL NULL NULL 15 11.11 Using where
Warnings:
Note 1003 /* select#1 */ select min(`test`.`t1`.`a1`) AS `min(a1)` from `test`.`t1` where (`test`.`t1`.`a1` between `test`.`t1`.`a3` and 'KKK')
explain
select min(a4) from t1 where (a4 + 0.01) between 0.07 and 0.08;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL index NULL k2 12 NULL 15 100.00 Using where; Using index
Warnings:
Note 1003 /* select#1 */ select min(`test`.`t1`.`a4`) AS `min(a4)` from `test`.`t1` where ((`test`.`t1`.`a4` + 0.01) between 0.07 and 0.08)
explain
select concat(min(t1.a1),min(t2.a4)) from t1, t2 where t2.a4 <> 'AME';
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 NULL range k2 k2 4 NULL 6 100.00 Using where; Using index
1 SIMPLE t1 NULL index NULL PRIMARY 3 NULL 15 100.00 Using index; Using join buffer (Block Nested Loop)
Warnings:
Note 1003 /* select#1 */ select concat(min(`test`.`t1`.`a1`),min(`test`.`t2`.`a4`)) AS `concat(min(t1.a1),min(t2.a4))` from `test`.`t1` join `test`.`t2` where (`test`.`t2`.`a4` <> 'AME')
drop table t1, t2;
create table t1 (a char(10));
insert into t1 values ('a'),('b'),('c');
select coercibility(max(a)) from t1;
coercibility(max(a))
2
drop table t1;
create table t1 (a char character set latin2);
insert into t1 values ('a'),('b');
select charset(max(a)), coercibility(max(a)),
charset(min(a)), coercibility(min(a)) from t1;
charset(max(a)) coercibility(max(a)) charset(min(a)) coercibility(min(a))
latin2 2 latin2 2
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` char(1) CHARACTER SET latin2 DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
create table t2 select max(a),min(a) from t1;
show create table t2;
Table Create Table
t2 CREATE TABLE `t2` (
`max(a)` char(1) CHARACTER SET latin2 DEFAULT NULL,
`min(a)` char(1) CHARACTER SET latin2 DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t2;
create table t2 select concat(a) from t1;
show create table t2;
Table Create Table
t2 CREATE TABLE `t2` (
`concat(a)` varchar(1) CHARACTER SET latin2 DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t2,t1;
create table t1 (a int);
insert into t1 values (1);
select max(a) as b from t1 having b=1;
b
1
select a from t1 having a=1;
a
1
drop table t1;
create table t1 (a int);
select variance(2) from t1;
variance(2)
NULL
select stddev(2) from t1;
stddev(2)
NULL
drop table t1;
create table t1 (a int);
insert into t1 values (1),(2);
prepare stmt1 from 'SELECT COUNT(*) FROM t1';
execute stmt1;
COUNT(*)
2
execute stmt1;
COUNT(*)
2
execute stmt1;
COUNT(*)
2
deallocate prepare stmt1;
drop table t1;
create table t1 (a int, primary key(a));
insert into t1 values (1),(2);
prepare stmt1 from 'SELECT max(a) FROM t1';
execute stmt1;
max(a)
2
execute stmt1;
max(a)
2
execute stmt1;
max(a)
2
deallocate prepare stmt1;
drop table t1;
CREATE TABLE t1 (a int primary key);
INSERT INTO t1 VALUES (1),(2),(3),(4);
SELECT MAX(a) FROM t1 WHERE a > 5;
MAX(a)
NULL
SELECT MIN(a) FROM t1 WHERE a < 0;
MIN(a)
NULL
DROP TABLE t1;
CREATE TABLE t1 (
id int(10) unsigned NOT NULL auto_increment,
val enum('one','two','three') NOT NULL default 'one',
PRIMARY KEY (id)
) ENGINE=MyISAM DEFAULT CHARSET=utf8;
INSERT INTO t1 VALUES
(1,'one'),(2,'two'),(3,'three'),(4,'one'),(5,'two');
select val, count(*) from t1 group by val;
val count(*)
one 2
two 2
three 1
drop table t1;
CREATE TABLE t1 (
id int(10) unsigned NOT NULL auto_increment,
val set('one','two','three') NOT NULL default 'one',
PRIMARY KEY (id)
) ENGINE=MyISAM DEFAULT CHARSET=utf8;
INSERT INTO t1 VALUES
(1,'one'),(2,'two'),(3,'three'),(4,'one'),(5,'two');
select val, count(*) from t1 group by val;
val count(*)
one 2
two 2
three 1
drop table t1;
create table t1(a int, b datetime);
insert into t1 values (1, NOW()), (2, NOW());
create table t2 select MAX(b) from t1 group by a;
show create table t2;
Table Create Table
t2 CREATE TABLE `t2` (
`MAX(b)` datetime DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t1, t2;
SET sql_mode = 'NO_ENGINE_SUBSTITUTION';
Warnings:
Warning 3090 Changing sql mode 'NO_AUTO_CREATE_USER' is deprecated. It will be removed in a future release.
create table t1(f1 datetime);
insert into t1 values (now());
create table t2 select f2 from (select max(now()) f2 from t1) a;
show columns from t2;
Field Type Null Key Default Extra
f2 datetime YES NULL
drop table t2;
create table t2 select f2 from (select now() f2 from t1) a;
show columns from t2;
Field Type Null Key Default Extra
f2 datetime NO 0000-00-00 00:00:00
drop table t2, t1;
SET sql_mode = default;
CREATE TABLE t1(
id int PRIMARY KEY,
a int,
b int,
INDEX i_b_id(a,b,id),
INDEX i_id(a,id)
);
INSERT INTO t1 VALUES
(1,1,4), (2,2,1), (3,1,3), (4,2,1), (5,1,1);
SELECT MAX(id) FROM t1 WHERE id < 3 AND a=2 AND b=6;
MAX(id)
NULL
DROP TABLE t1;
CREATE TABLE t1(
id int PRIMARY KEY,
a int,
b int,
INDEX i_id(a,id),
INDEX i_b_id(a,b,id)
);
INSERT INTO t1 VALUES
(1,1,4), (2,2,1), (3,1,3), (4,2,1), (5,1,1);
SELECT MAX(id) FROM t1 WHERE id < 3 AND a=2 AND b=6;
MAX(id)
NULL
DROP TABLE t1;
CREATE TABLE t1 (id int PRIMARY KEY, b char(3), INDEX(b));
INSERT INTO t1 VALUES (1,'xx'), (2,'aa');
SELECT * FROM t1;
id b
1 xx
2 aa
SELECT MAX(b) FROM t1 WHERE b < 'ppppp';
MAX(b)
aa
SHOW WARNINGS;
Level Code Message
SELECT MAX(b) FROM t1 WHERE b < 'pp';
MAX(b)
aa
DROP TABLE t1;
CREATE TABLE t1 (id int PRIMARY KEY, b char(16), INDEX(b(4)));
INSERT INTO t1 VALUES (1, 'xxxxbbbb'), (2, 'xxxxaaaa');
SELECT MAX(b) FROM t1;
MAX(b)
xxxxbbbb
EXPLAIN SELECT MAX(b) FROM t1;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 2 100.00 NULL
Warnings:
Note 1003 /* select#1 */ select max(`test`.`t1`.`b`) AS `MAX(b)` from `test`.`t1`
DROP TABLE t1;
CREATE TABLE t1 (id int , b varchar(512), INDEX(b(250))) COLLATE latin1_bin;
INSERT INTO t1 VALUES
(1,CONCAT(REPEAT('_', 250), "qq")), (1,CONCAT(REPEAT('_', 250), "zz")),
(1,CONCAT(REPEAT('_', 250), "aa")), (1,CONCAT(REPEAT('_', 250), "ff"));
SELECT MAX(b) FROM t1;
MAX(b)
__________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________zz
EXPLAIN SELECT MAX(b) FROM t1;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 4 100.00 NULL
Warnings:
Note 1003 /* select#1 */ select max(`test`.`t1`.`b`) AS `MAX(b)` from `test`.`t1`
DROP TABLE t1;
CREATE TABLE t1 (a INT, b INT);
INSERT INTO t1 VALUES (1,1),(1,2),(2,3);
SELECT (SELECT COUNT(DISTINCT t1.b)) FROM t1 GROUP BY t1.a;
(SELECT COUNT(DISTINCT t1.b))
2
1
SELECT (SELECT COUNT(DISTINCT 12)) FROM t1 GROUP BY t1.a;
(SELECT COUNT(DISTINCT 12))
1
1
SELECT AVG(2), BIT_AND(2), BIT_OR(2), BIT_XOR(2), COUNT(*), COUNT(12),
COUNT(DISTINCT 12), MIN(2),MAX(2),STD(2), VARIANCE(2),SUM(2),
GROUP_CONCAT(2),GROUP_CONCAT(DISTINCT 2);
AVG(2) BIT_AND(2) BIT_OR(2) BIT_XOR(2) COUNT(*) COUNT(12) COUNT(DISTINCT 12) MIN(2) MAX(2) STD(2) VARIANCE(2) SUM(2) GROUP_CONCAT(2) GROUP_CONCAT(DISTINCT 2)
2.00000 2 2 2 1 1 1 2 2 0 0 2 2 2
DROP TABLE t1;
create table t2 (ff double);
insert into t2 values (2.2);
select cast(sum(distinct ff) as decimal(5,2)) from t2;
cast(sum(distinct ff) as decimal(5,2))
2.20
select cast(sum(distinct ff) as signed) from t2;
cast(sum(distinct ff) as signed)
2
select cast(variance(ff) as decimal(10,3)) from t2;
cast(variance(ff) as decimal(10,3))
0.000
select cast(min(ff) as decimal(5,2)) from t2;
cast(min(ff) as decimal(5,2))
2.20
create table t1 (df decimal(5,1));
insert into t1 values(1.1);
insert into t1 values(2.2);
select cast(sum(distinct df) as signed) from t1;
cast(sum(distinct df) as signed)
3
select cast(min(df) as signed) from t1;
cast(min(df) as signed)
1
select 1e8 * sum(distinct df) from t1;
1e8 * sum(distinct df)
330000000
select 1e8 * min(df) from t1;
1e8 * min(df)
110000000.00000001
create table t3 (ifl int);
insert into t3 values(1), (2);
select cast(min(ifl) as decimal(5,2)) from t3;
cast(min(ifl) as decimal(5,2))
1.00
drop table t1, t2, t3;
CREATE TABLE t1 (id int(11),value1 float(10,2));
INSERT INTO t1 VALUES (1,0.00),(1,1.00), (1,2.00), (2,10.00), (2,11.00), (2,12.00), (2,13.00);
select id, stddev_pop(value1), var_pop(value1), stddev_samp(value1), var_samp(value1) from t1 group by id;
id stddev_pop(value1) var_pop(value1) stddev_samp(value1) var_samp(value1)
1 0.816496580927726 0.6666666666666666 1 1
2 1.118033988749895 1.25 1.2909944487358056 1.6666666666666667
DROP TABLE t1;
CREATE TABLE t1 (col1 decimal(16,12));
INSERT INTO t1 VALUES (-5.00000000001),(-5.00000000002),(-5.00000000003),(-5.00000000000),(-5.00000000001),(-5.00000000002);
insert into t1 select * from t1;
select col1,count(col1),sum(col1),avg(col1) from t1 group by col1;
col1 count(col1) sum(col1) avg(col1)
-5.000000000030 2 -10.000000000060 -5.00000000003000000
-5.000000000020 4 -20.000000000080 -5.00000000002000000
-5.000000000010 4 -20.000000000040 -5.00000000001000000
-5.000000000000 2 -10.000000000000 -5.00000000000000000
DROP TABLE t1;
create table t1 (col1 decimal(16,12));
insert into t1 values (-5.00000000001);
insert into t1 values (-5.00000000001);
select col1,sum(col1),max(col1),min(col1) from t1 group by col1;
col1 sum(col1) max(col1) min(col1)
-5.000000000010 -10.000000000020 -5.000000000010 -5.000000000010
delete from t1;
insert into t1 values (5.00000000001);
insert into t1 values (5.00000000001);
select col1,sum(col1),max(col1),min(col1) from t1 group by col1;
col1 sum(col1) max(col1) min(col1)
5.000000000010 10.000000000020 5.000000000010 5.000000000010
DROP TABLE t1;
CREATE TABLE t1 (a VARCHAR(400));
INSERT INTO t1 (a) VALUES ("A"), ("a"), ("a "), ("a "),
("B"), ("b"), ("b "), ("b ");
SELECT COUNT(DISTINCT a) FROM t1;
COUNT(DISTINCT a)
2
DROP TABLE t1;
CREATE TABLE t1 (a int, b int, c int);
INSERT INTO t1 (a, b, c) VALUES
(1,1,1), (1,1,2), (1,1,3),
(1,2,1), (1,2,2), (1,2,3),
(1,3,1), (1,3,2), (1,3,3),
(2,1,1), (2,1,2), (2,1,3),
(2,2,1), (2,2,2), (2,2,3),
(2,3,1), (2,3,2), (2,3,3),
(3,1,1), (3,1,2), (3,1,3),
(3,2,1), (3,2,2), (3,2,3),
(3,3,1), (3,3,2), (3,3,3);
SELECT b/c as v, a FROM t1 ORDER BY v, a;
v a
0.33333 1
0.33333 2
0.33333 3
0.50000 1
0.50000 2
0.50000 3
0.66667 1
0.66667 2
0.66667 3
1.00000 1
1.00000 1
1.00000 1
1.00000 2
1.00000 2
1.00000 2
1.00000 3
1.00000 3
1.00000 3
1.50000 1
1.50000 2
1.50000 3
2.00000 1
2.00000 2
2.00000 3
3.00000 1
3.00000 2
3.00000 3
SELECT b/c as v, SUM(a) FROM t1 GROUP BY v;
v SUM(a)
0.33333 6
0.50000 6
0.66667 6
1.00000 18
1.50000 6
2.00000 6
3.00000 6
SELECT SUM(a) FROM t1 GROUP BY b/c;
SUM(a)
6
6
6
18
6
6
6
DROP TABLE t1;
set div_precision_increment= @sav_dpi;
CREATE TABLE t1 (a INT PRIMARY KEY, b INT);
INSERT INTO t1 VALUES (1,1), (2,2);
CREATE TABLE t2 (a INT PRIMARY KEY, b INT);
INSERT INTO t2 VALUES (1,1), (3,3);
SELECT SQL_NO_CACHE
(SELECT SUM(c.a) FROM t1 ttt, t2 ccc
WHERE ttt.a = ccc.b AND ttt.a = t.a GROUP BY ttt.a) AS minid
FROM t1 t, t2 c WHERE t.a = c.b;
minid
1
Warnings:
Warning 1681 'SQL_NO_CACHE' is deprecated and will be removed in a future release.
DROP TABLE t1,t2;
create table t1 select variance(0);
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`variance(0)` double DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t1;
create table t1 select stddev(0);
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`stddev(0)` double DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1
drop table t1;
create table bug22555 (i smallint primary key auto_increment, s1 smallint, s2 smallint, e decimal(30,10), o double);
insert into bug22555 (s1, s2, e, o) values (53, 78, 11.4276528, 6.828112), (17, 78, 5.916793, 1.8502951), (18, 76, 2.679231, 9.17975591), (31, 62, 6.07831, 0.1), (19, 41, 5.37463, 15.1), (83, 73, 14.567426, 7.959222), (92, 53, 6.10151, 13.1856852), (7, 12, 13.92272, 3.442007), (92, 35, 11.95358909, 6.01376678), (38, 84, 2.572, 7.904571);
select std(s1/s2) from bug22555 group by i;
std(s1/s2)
0
0
0
0
0
0
0
0
0
0
select std(e) from bug22555 group by i;
std(e)
0
0
0
0
0
0
0
0
0
0
select std(o) from bug22555 group by i;
std(o)
0
0
0
0
0
0
0
0
0
0
drop table bug22555;
create table bug22555 (i smallint, s1 smallint, s2 smallint, o1 double, o2 double, e1 decimal, e2 decimal);
insert into bug22555 values (1,53,78,53,78,53,78),(2,17,78,17,78,17,78),(3,18,76,18,76,18,76);
select i, count(*) from bug22555 group by i;
i count(*)
1 1
2 1
3 1
select std(s1/s2) from bug22555 where i=1;
std(s1/s2)
0
select std(s1/s2) from bug22555 where i=2;
std(s1/s2)
0
select std(s1/s2) from bug22555 where i=3;
std(s1/s2)
0
select std(s1/s2) from bug22555 where i=1 group by i;
std(s1/s2)
0
select std(s1/s2) from bug22555 where i=2 group by i;
std(s1/s2)
0
select std(s1/s2) from bug22555 where i=3 group by i;
std(s1/s2)
0
select std(s1/s2) from bug22555 group by i order by i;
std(s1/s2)
0
0
0
select i, count(*), std(o1/o2) from bug22555 group by i order by i;
i count(*) std(o1/o2)
1 1 0
2 1 0
3 1 0
select i, count(*), std(e1/e2) from bug22555 group by i order by i;
i count(*) std(e1/e2)
1 1 0
2 1 0
3 1 0
set @saved_div_precision_increment=@@div_precision_increment;
set div_precision_increment=19;
select i, count(*), variance(s1/s2) from bug22555 group by i order by i;
i count(*) variance(s1/s2)
1 1 0
2 1 0
3 1 0
select i, count(*), variance(o1/o2) from bug22555 group by i order by i;
i count(*) variance(o1/o2)
1 1 0
2 1 0
3 1 0
select i, count(*), variance(e1/e2) from bug22555 group by i order by i;
i count(*) variance(e1/e2)
1 1 0
2 1 0
3 1 0
select i, count(*), std(s1/s2) from bug22555 group by i order by i;
i count(*) std(s1/s2)
1 1 0
2 1 0
3 1 0
select i, count(*), std(o1/o2) from bug22555 group by i order by i;
i count(*) std(o1/o2)
1 1 0
2 1 0
3 1 0
select i, count(*), std(e1/e2) from bug22555 group by i order by i;
i count(*) std(e1/e2)
1 1 0
2 1 0
3 1 0
set div_precision_increment=20;
select i, count(*), variance(s1/s2) from bug22555 group by i order by i;
i count(*) variance(s1/s2)
1 1 0
2 1 0
3 1 0
select i, count(*), variance(o1/o2) from bug22555 group by i order by i;
i count(*) variance(o1/o2)
1 1 0
2 1 0
3 1 0
select i, count(*), variance(e1/e2) from bug22555 group by i order by i;
i count(*) variance(e1/e2)
1 1 0
2 1 0
3 1 0
select i, count(*), std(s1/s2) from bug22555 group by i order by i;
i count(*) std(s1/s2)
1 1 0
2 1 0
3 1 0
select i, count(*), std(o1/o2) from bug22555 group by i order by i;
i count(*) std(o1/o2)
1 1 0
2 1 0
3 1 0
select i, count(*), std(e1/e2) from bug22555 group by i order by i;
i count(*) std(e1/e2)
1 1 0
2 1 0
3 1 0
set @@div_precision_increment=@saved_div_precision_increment;
insert into bug22555 values (1,53,78,53,78,53,78),(2,17,78,17,78,17,78),(3,18,76,18,76,18,76);
insert into bug22555 values (1,53,78,53,78,53,78),(2,17,78,17,78,17,78),(3,18,76,18,76,18,76);
insert into bug22555 values (1,53,78,53,78,53,78),(2,17,78,17,78,17,78),(3,18,76,18,76,18,76);
select i, count(*), std(s1/s2) from bug22555 group by i order by i;
i count(*) std(s1/s2)
1 4 0
2 4 0
3 4 0
select i, count(*), round(std(o1/o2), 16) from bug22555 group by i order by i;
i count(*) round(std(o1/o2), 16)
1 4 0.0000000000000000
2 4 0.0000000000000000
3 4 0.0000000000000000
select i, count(*), std(e1/e2) from bug22555 group by i order by i;
i count(*) std(e1/e2)
1 4 0
2 4 0
3 4 0
select std(s1/s2) from bug22555;
std(s1/s2)
0.21325763593256278
select std(o1/o2) from bug22555;
std(o1/o2)
0.2132576358664934
select std(e1/e2) from bug22555;
std(e1/e2)
0.21325763593256278
set @saved_div_precision_increment=@@div_precision_increment;
set div_precision_increment=19;
select i, count(*), std(s1/s2) from bug22555 group by i order by i;
i count(*) std(s1/s2)
1 4 0
2 4 0
3 4 0
select i, count(*), round(std(o1/o2), 16) from bug22555 group by i order by i;
i count(*) round(std(o1/o2), 16)
1 4 0.0000000000000000
2 4 0.0000000000000000
3 4 0.0000000000000000
select i, count(*), std(e1/e2) from bug22555 group by i order by i;
i count(*) std(e1/e2)
1 4 0
2 4 0
3 4 0
select round(std(s1/s2), 17) from bug22555;
round(std(s1/s2), 17)
0.21325763586649340
select std(o1/o2) from bug22555;
std(o1/o2)
0.2132576358664934
select round(std(e1/e2), 17) from bug22555;
round(std(e1/e2), 17)
0.21325763586649340
set div_precision_increment=20;
select i, count(*), std(s1/s2) from bug22555 group by i order by i;
i count(*) std(s1/s2)
1 4 0
2 4 0
3 4 0
select i, count(*), round(std(o1/o2), 16) from bug22555 group by i order by i;
i count(*) round(std(o1/o2), 16)
1 4 0.0000000000000000
2 4 0.0000000000000000
3 4 0.0000000000000000
select i, count(*), std(e1/e2) from bug22555 group by i order by i;
i count(*) std(e1/e2)
1 4 0
2 4 0
3 4 0
select round(std(s1/s2), 17) from bug22555;
round(std(s1/s2), 17)
0.21325763586649340
select std(o1/o2) from bug22555;
std(o1/o2)
0.2132576358664934
select round(std(e1/e2), 17) from bug22555;
round(std(e1/e2), 17)
0.21325763586649340
set @@div_precision_increment=@saved_div_precision_increment;
drop table bug22555;
create table bug22555 (s smallint, o double, e decimal);
insert into bug22555 values (1,1,1),(2,2,2),(3,3,3),(6,6,6),(7,7,7);
select var_samp(s), var_pop(s) from bug22555;
var_samp(s) var_pop(s)
6.7 5.36
select var_samp(o), var_pop(o) from bug22555;
var_samp(o) var_pop(o)
6.7 5.36
select var_samp(e), var_pop(e) from bug22555;
var_samp(e) var_pop(e)
6.7 5.36
drop table bug22555;
create table bug22555 (s smallint, o double, e decimal);
insert into bug22555 values (null,null,null),(null,null,null);
select var_samp(s) as 'null', var_pop(s) as 'null' from bug22555;
null null
NULL NULL
select var_samp(o) as 'null', var_pop(o) as 'null' from bug22555;
null null
NULL NULL
select var_samp(e) as 'null', var_pop(e) as 'null' from bug22555;
null null
NULL NULL
insert into bug22555 values (1,1,1);
select var_samp(s) as 'null', var_pop(s) as '0' from bug22555;
null 0
NULL 0
select var_samp(o) as 'null', var_pop(o) as '0' from bug22555;
null 0
NULL 0
select var_samp(e) as 'null', var_pop(e) as '0' from bug22555;
null 0
NULL 0
insert into bug22555 values (2,2,2);
select var_samp(s) as '0.5', var_pop(s) as '0.25' from bug22555;
0.5 0.25
0.5 0.25
select var_samp(o) as '0.5', var_pop(o) as '0.25' from bug22555;
0.5 0.25
0.5 0.25
select var_samp(e) as '0.5', var_pop(e) as '0.25' from bug22555;
0.5 0.25
0.5 0.25
drop table bug22555;
create table t1 (a decimal(20));
insert into t1 values (12345678901234567890);
select count(a) from t1;
count(a)
1
select count(distinct a) from t1;
count(distinct a)
1
drop table t1;
CREATE TABLE t1 (a INT, b INT);
INSERT INTO t1 VALUES (1,1),(1,2),(1,3),(1,4),(1,5),(1,6),(1,7),(1,8);
INSERT INTO t1 SELECT a, b+8 FROM t1;
INSERT INTO t1 SELECT a, b+16 FROM t1;
INSERT INTO t1 SELECT a, b+32 FROM t1;
INSERT INTO t1 SELECT a, b+64 FROM t1;
INSERT INTO t1 SELECT a, b+128 FROM t1;
INSERT INTO t1 SELECT a, b+256 FROM t1;
INSERT INTO t1 SELECT a, b+512 FROM t1;
INSERT INTO t1 SELECT a, b+1024 FROM t1;
INSERT INTO t1 SELECT a, b+2048 FROM t1;
INSERT INTO t1 SELECT a, b+4096 FROM t1;
INSERT INTO t1 SELECT a, b+8192 FROM t1;
INSERT INTO t1 SELECT a, b+16384 FROM t1;
INSERT INTO t1 SELECT a, b+32768 FROM t1;
SELECT a,COUNT(DISTINCT b) AS cnt FROM t1 GROUP BY a HAVING cnt > 50;
a cnt
1 65536
SELECT a,SUM(DISTINCT b) AS sumation FROM t1 GROUP BY a HAVING sumation > 50;
a sumation
1 2147516416
SELECT a,AVG(DISTINCT b) AS average FROM t1 GROUP BY a HAVING average > 50;
a average
1 32768.5000
DROP TABLE t1;
CREATE TABLE t1 ( a INT, b INT, KEY(a) );
INSERT INTO t1 VALUES (NULL, 1), (NULL, 2);
EXPLAIN SELECT MIN(a), MIN(b) FROM t1;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 2 100.00 NULL
Warnings:
Note 1003 /* select#1 */ select min(`test`.`t1`.`a`) AS `MIN(a)`,min(`test`.`t1`.`b`) AS `MIN(b)` from `test`.`t1`
SELECT MIN(a), MIN(b) FROM t1;
MIN(a) MIN(b)
NULL 1
CREATE TABLE t2( a INT, b INT, c INT, KEY(a, b) );
INSERT INTO t2 ( a, b, c ) VALUES ( 1, NULL, 2 ), ( 1, 3, 4 ), ( 1, 4, 4 );
EXPLAIN SELECT MIN(b), MIN(c) FROM t2 WHERE a = 1;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 NULL ref a a 5 const 2 100.00 NULL
Warnings:
Note 1003 /* select#1 */ select min(`test`.`t2`.`b`) AS `MIN(b)`,min(`test`.`t2`.`c`) AS `MIN(c)` from `test`.`t2` where (`test`.`t2`.`a` = 1)
SELECT MIN(b), MIN(c) FROM t2 WHERE a = 1;
MIN(b) MIN(c)
3 2
CREATE TABLE t3 (a INT, b INT, c int, KEY(a, b));
INSERT INTO t3 VALUES (1, NULL, 1), (2, NULL, 2), (2, NULL, 2), (3, NULL, 3);
EXPLAIN SELECT MIN(a), MIN(b) FROM t3 where a = 2;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
Warnings:
Note 1003 /* select#1 */ select min(`test`.`t3`.`a`) AS `MIN(a)`,min(`test`.`t3`.`b`) AS `MIN(b)` from `test`.`t3` where multiple equal(2, `test`.`t3`.`a`)
SELECT MIN(a), MIN(b) FROM t3 where a = 2;
MIN(a) MIN(b)
2 NULL
CREATE TABLE t4 (a INT, b INT, c int, KEY(a, b));
INSERT INTO t4 VALUES (1, 1, 1), (2, NULL, 2), (2, NULL, 2), (3, 1, 3);
EXPLAIN SELECT MIN(a), MIN(b) FROM t4 where a = 2;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
Warnings:
Note 1003 /* select#1 */ select min(`test`.`t4`.`a`) AS `MIN(a)`,min(`test`.`t4`.`b`) AS `MIN(b)` from `test`.`t4` where multiple equal(2, `test`.`t4`.`a`)
SELECT MIN(a), MIN(b) FROM t4 where a = 2;
MIN(a) MIN(b)
2 NULL
SELECT MIN(b), min(c) FROM t4 where a = 2;
MIN(b) min(c)
NULL 2
CREATE TABLE t5( a INT, b INT, KEY( a, b) );
INSERT INTO t5 VALUES( 1, 1 ), ( 1, 2 );
EXPLAIN SELECT MIN(a), MIN(b) FROM t5 WHERE a = 1;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
Warnings:
Note 1003 /* select#1 */ select min(`test`.`t5`.`a`) AS `MIN(a)`,min(`test`.`t5`.`b`) AS `MIN(b)` from `test`.`t5` where multiple equal(1, `test`.`t5`.`a`)
SELECT MIN(a), MIN(b) FROM t5 WHERE a = 1;
MIN(a) MIN(b)
1 1
SELECT MIN(a), MIN(b) FROM t5 WHERE a = 1 and b > 1;
MIN(a) MIN(b)
1 2
DROP TABLE t1, t2, t3, t4, t5;
CREATE TABLE t1 (a INT);
INSERT INTO t1 values (),(),();
SELECT (SELECT SLEEP(0) FROM t1 ORDER BY AVG(DISTINCT a) ) as x FROM t1
GROUP BY x;
ERROR HY000: Expression #1 of ORDER BY contains aggregate function and applies to the result of a non-aggregated query
SELECT 1 FROM t1 GROUP BY (SELECT SLEEP(0) FROM t1 ORDER BY AVG(DISTINCT a) );
ERROR HY000: Expression #1 of ORDER BY contains aggregate function and applies to the result of a non-aggregated query
DROP TABLE t1;
CREATE TABLE t1 (a int, b date NOT NULL, KEY k1 (a,b));
SELECT MIN(b) FROM t1 WHERE a=1 AND b>'2007-08-01';
MIN(b)
NULL
DROP TABLE t1;
CREATE TABLE t1 (a INT);
INSERT INTO t1 VALUES (1),(2),(3),(4);
SELECT a FROM t1 HAVING COUNT(*)>2;
ERROR 42000: In aggregated query without GROUP BY, expression #1 of SELECT list contains nonaggregated column 'test.t1.a'; this is incompatible with sql_mode=only_full_group_by
SELECT COUNT(*), a FROM t1;
ERROR 42000: In aggregated query without GROUP BY, expression #2 of SELECT list contains nonaggregated column 'test.t1.a'; this is incompatible with sql_mode=only_full_group_by
SELECT a FROM t1 HAVING COUNT(*)>2;
a
1
SELECT COUNT(*), a FROM t1;
COUNT(*) a
4 1
DROP TABLE t1;
set SQL_MODE=ONLY_FULL_GROUP_BY;
Warnings:
Warning 3090 Changing sql mode 'NO_AUTO_CREATE_USER' is deprecated. It will be removed in a future release.
CREATE TABLE t1 (a INT);
INSERT INTO t1 VALUES (1),(2),(3),(4);
CREATE VIEW v1 AS SELECT a,(a + 1) AS y FROM t1;
EXPLAIN EXTENDED SELECT y FROM v1 GROUP BY v1.y;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 4 100.00 Using temporary; Using filesort
Warnings:
Warning 1681 'EXTENDED' is deprecated and will be removed in a future release.
Note 1003 /* select#1 */ select (`test`.`t1`.`a` + 1) AS `y` from `test`.`t1` group by (`test`.`t1`.`a` + 1)
DROP VIEW v1;
DROP TABLE t1;
SET SQL_MODE=DEFAULT;
CREATE TABLE t1(a DOUBLE);
INSERT INTO t1 VALUES (10), (20);
SELECT AVG(a), CAST(AVG(a) AS DECIMAL) FROM t1;
AVG(a) CAST(AVG(a) AS DECIMAL)
15 15
DROP TABLE t1;
CREATE TABLE derived1 (a bigint(21));
INSERT INTO derived1 VALUES (2);
CREATE TABLE D (
pk int(11) NOT NULL AUTO_INCREMENT,
int_nokey int(11) DEFAULT NULL,
int_key int(11) DEFAULT NULL,
filler blob,
PRIMARY KEY (pk),
KEY int_key (int_key)
);
INSERT INTO D VALUES
(39,40,4,repeat(' X', 42)),
(43,56,4,repeat(' X', 42)),
(47,12,4,repeat(' X', 42)),
(71,28,4,repeat(' X', 42)),
(76,54,4,repeat(' X', 42)),
(83,45,4,repeat(' X', 42)),
(105,53,12,NULL);
SELECT
(SELECT COUNT( int_nokey )
FROM derived1 AS X
WHERE
X.int_nokey < 61
GROUP BY pk
LIMIT 1)
FROM D AS X
WHERE X.int_key < 13
GROUP BY int_nokey LIMIT 1;
ERROR 42000: Expression #1 of SELECT list is not in GROUP BY clause and contains nonaggregated column 'test.X.pk' which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by
DROP TABLE derived1;
DROP TABLE D;
CREATE TABLE t1 (a INT, b INT);
INSERT INTO t1 VALUES (1,1), (1,2), (1,3);
SET SQL_MODE='ONLY_FULL_GROUP_BY';
Warnings:
Warning 3090 Changing sql mode 'NO_AUTO_CREATE_USER' is deprecated. It will be removed in a future release.
SELECT COUNT(*) FROM t1;
COUNT(*)
3
SELECT COUNT(*) FROM t1 where a=1;
COUNT(*)
3
SELECT COUNT(*),a FROM t1;
ERROR 42000: In aggregated query without GROUP BY, expression #2 of SELECT list contains nonaggregated column 'test.t1.a'; this is incompatible with sql_mode=only_full_group_by
SELECT COUNT(*) FROM t1 a JOIN t1 b ON a.a= b.a;
COUNT(*)
9
SELECT COUNT(*), (SELECT count(*) FROM t1 inr WHERE inr.a = outr.a)
FROM t1 outr;
ERROR 42000: In aggregated query without GROUP BY, expression #2 of SELECT list contains nonaggregated column 'test.outr.a'; this is incompatible with sql_mode=only_full_group_by
SELECT COUNT(*) FROM t1 a JOIN t1 outr
ON a.a= (SELECT count(*) FROM t1 inr WHERE inr.a = outr.a);
COUNT(*)
0
SET SQL_MODE=default;
DROP TABLE t1;
End of 5.0 tests
#
# BUG#47280 - strange results from count(*) with order by multiple
# columns without where/group
#
#
# Initialize test
#
CREATE TABLE t1 (
pk INT NOT NULL,
i INT,
PRIMARY KEY (pk)
);
INSERT INTO t1 VALUES (1,11),(2,12),(3,13);
#
# Start test
# All the following queries shall return 1 record
#
# Masking all correct values {11...13} for column i in this result.
SELECT MAX(pk) as max, i
FROM t1
ORDER BY max;
max i
3 #
EXPLAIN
SELECT MAX(pk) as max, i
FROM t1
ORDER BY max;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 3 100.00 NULL
Warnings:
Note 1003 /* select#1 */ select max(`test`.`t1`.`pk`) AS `max`,`test`.`t1`.`i` AS `i` from `test`.`t1`
# Only 11 is correct for collumn i in this result
SELECT MAX(pk) as max, i
FROM t1
WHERE pk<2
ORDER BY max;
max i
1 11
#
# Cleanup
#
DROP TABLE t1;
#
# Bug#43668: Wrong comparison and MIN/MAX for YEAR(2)
# WL#6263: Remove year(2)
#
create table t1 (f1 year(4), f2 year(4), f3 date, f4 datetime);
insert into t1 values
(98,1998,19980101,"1998-01-01 00:00:00"),
('00',2000,20000101,"2000-01-01 00:00:01"),
(02,2002,20020101,"2002-01-01 23:59:59"),
(60,2060,20600101,"2060-01-01 11:11:11"),
(70,1970,19700101,"1970-11-11 22:22:22"),
(NULL,NULL,NULL,NULL);
select min(f1),max(f1) from t1;
min(f1) max(f1)
1970 2060
select min(f2),max(f2) from t1;
min(f2) max(f2)
1970 2060
select min(f3),max(f3) from t1;
min(f3) max(f3)
1970-01-01 2060-01-01
select min(f4),max(f4) from t1;
min(f4) max(f4)
1970-11-11 22:22:22 2060-01-01 11:11:11
select a.f1 as a, b.f1 as b, a.f1 > b.f1 as gt,
a.f1 < b.f1 as lt, a.f1<=>b.f1 as eq
from t1 a, t1 b;
a b gt lt eq
1998 1998 0 0 1
2000 1998 1 0 0
2002 1998 1 0 0
2060 1998 1 0 0
1970 1998 0 1 0
NULL 1998 NULL NULL 0
1998 2000 0 1 0
2000 2000 0 0 1
2002 2000 1 0 0
2060 2000 1 0 0
1970 2000 0 1 0
NULL 2000 NULL NULL 0
1998 2002 0 1 0
2000 2002 0 1 0
2002 2002 0 0 1
2060 2002 1 0 0
1970 2002 0 1 0
NULL 2002 NULL NULL 0
1998 2060 0 1 0
2000 2060 0 1 0
2002 2060 0 1 0
2060 2060 0 0 1
1970 2060 0 1 0
NULL 2060 NULL NULL 0
1998 1970 1 0 0
2000 1970 1 0 0
2002 1970 1 0 0
2060 1970 1 0 0
1970 1970 0 0 1
NULL 1970 NULL NULL 0
1998 NULL NULL NULL 0
2000 NULL NULL NULL 0
2002 NULL NULL NULL 0
2060 NULL NULL NULL 0
1970 NULL NULL NULL 0
NULL NULL NULL NULL 1
select a.f1 as a, b.f2 as b, a.f1 > b.f2 as gt,
a.f1 < b.f2 as lt, a.f1<=>b.f2 as eq
from t1 a, t1 b;
a b gt lt eq
1998 1998 0 0 1
2000 1998 1 0 0
2002 1998 1 0 0
2060 1998 1 0 0
1970 1998 0 1 0
NULL 1998 NULL NULL 0
1998 2000 0 1 0
2000 2000 0 0 1
2002 2000 1 0 0
2060 2000 1 0 0
1970 2000 0 1 0
NULL 2000 NULL NULL 0
1998 2002 0 1 0
2000 2002 0 1 0
2002 2002 0 0 1
2060 2002 1 0 0
1970 2002 0 1 0
NULL 2002 NULL NULL 0
1998 2060 0 1 0
2000 2060 0 1 0
2002 2060 0 1 0
2060 2060 0 0 1
1970 2060 0 1 0
NULL 2060 NULL NULL 0
1998 1970 1 0 0
2000 1970 1 0 0
2002 1970 1 0 0
2060 1970 1 0 0
1970 1970 0 0 1
NULL 1970 NULL NULL 0
1998 NULL NULL NULL 0
2000 NULL NULL NULL 0
2002 NULL NULL NULL 0
2060 NULL NULL NULL 0
1970 NULL NULL NULL 0
NULL NULL NULL NULL 1
select a.f1 as a, b.f3 as b, a.f1 > b.f3 as gt,
a.f1 < b.f3 as lt, a.f1<=>b.f3 as eq
from t1 a, t1 b;
a b gt lt eq
1998 1998-01-01 0 1 0
2000 1998-01-01 1 0 0
2002 1998-01-01 1 0 0
2060 1998-01-01 1 0 0
1970 1998-01-01 0 1 0
NULL 1998-01-01 NULL NULL 0
1998 2000-01-01 0 1 0
2000 2000-01-01 0 1 0
2002 2000-01-01 1 0 0
2060 2000-01-01 1 0 0
1970 2000-01-01 0 1 0
NULL 2000-01-01 NULL NULL 0
1998 2002-01-01 0 1 0
2000 2002-01-01 0 1 0
2002 2002-01-01 0 1 0
2060 2002-01-01 1 0 0
1970 2002-01-01 0 1 0
NULL 2002-01-01 NULL NULL 0
1998 2060-01-01 0 1 0
2000 2060-01-01 0 1 0
2002 2060-01-01 0 1 0
2060 2060-01-01 0 1 0
1970 2060-01-01 0 1 0
NULL 2060-01-01 NULL NULL 0
1998 1970-01-01 1 0 0
2000 1970-01-01 1 0 0
2002 1970-01-01 1 0 0
2060 1970-01-01 1 0 0
1970 1970-01-01 0 1 0
NULL 1970-01-01 NULL NULL 0
1998 NULL NULL NULL 0
2000 NULL NULL NULL 0
2002 NULL NULL NULL 0
2060 NULL NULL NULL 0
1970 NULL NULL NULL 0
NULL NULL NULL NULL 1
select a.f1 as a, b.f4 as b, a.f1 > b.f4 as gt,
a.f1 < b.f4 as lt, a.f1<=>b.f4 as eq
from t1 a, t1 b;
a b gt lt eq
1998 1998-01-01 00:00:00 0 1 0
2000 1998-01-01 00:00:00 1 0 0
2002 1998-01-01 00:00:00 1 0 0
2060 1998-01-01 00:00:00 1 0 0
1970 1998-01-01 00:00:00 0 1 0
NULL 1998-01-01 00:00:00 NULL NULL 0
1998 2000-01-01 00:00:01 0 1 0
2000 2000-01-01 00:00:01 0 1 0
2002 2000-01-01 00:00:01 1 0 0
2060 2000-01-01 00:00:01 1 0 0
1970 2000-01-01 00:00:01 0 1 0
NULL 2000-01-01 00:00:01 NULL NULL 0
1998 2002-01-01 23:59:59 0 1 0
2000 2002-01-01 23:59:59 0 1 0
2002 2002-01-01 23:59:59 0 1 0
2060 2002-01-01 23:59:59 1 0 0
1970 2002-01-01 23:59:59 0 1 0
NULL 2002-01-01 23:59:59 NULL NULL 0
1998 2060-01-01 11:11:11 0 1 0
2000 2060-01-01 11:11:11 0 1 0
2002 2060-01-01 11:11:11 0 1 0
2060 2060-01-01 11:11:11 0 1 0
1970 2060-01-01 11:11:11 0 1 0
NULL 2060-01-01 11:11:11 NULL NULL 0
1998 1970-11-11 22:22:22 1 0 0
2000 1970-11-11 22:22:22 1 0 0
2002 1970-11-11 22:22:22 1 0 0
2060 1970-11-11 22:22:22 1 0 0
1970 1970-11-11 22:22:22 0 1 0
NULL 1970-11-11 22:22:22 NULL NULL 0
1998 NULL NULL NULL 0
2000 NULL NULL NULL 0
2002 NULL NULL NULL 0
2060 NULL NULL NULL 0
1970 NULL NULL NULL 0
NULL NULL NULL NULL 1
select *, f1 = f2 from t1;
f1 f2 f3 f4 f1 = f2
1998 1998 1998-01-01 1998-01-01 00:00:00 1
2000 2000 2000-01-01 2000-01-01 00:00:01 1
2002 2002 2002-01-01 2002-01-01 23:59:59 1
2060 2060 2060-01-01 2060-01-01 11:11:11 1
1970 1970 1970-01-01 1970-11-11 22:22:22 1
NULL NULL NULL NULL NULL
drop table t1;
#
# Bug #54465: assert: field_types == 0 || field_types[field_pos] ==
# MYSQL_TYPE_LONGLONG
#
CREATE TABLE t1 (a INT);
INSERT INTO t1 VALUES (1), (2);
SELECT MAX((SELECT 1 FROM t1 ORDER BY @var LIMIT 1)) m FROM t1 t2, t1
ORDER BY t1.a;
m
1
DROP TABLE t1;
#
# Bug#58030 crash in Item_func_geometry_from_text::val_str
#
SELECT MAX(TIMESTAMP(RAND(0)));
SELECT MIN(TIMESTAMP(RAND(0)));
#
# Bug#58177 crash and valgrind warnings in decimal and protocol sending functions...
#
SELECT MIN(GET_LOCK('aaaaaaaaaaaaaaaaa',0) / '0b1111111111111111111111111111111111111111111111111111111111111111111111111' ^ (RAND()));
SELECT MIN(GET_LOCK('aaaaaaaaaaaaaaaaa',0) / '0b1111111111111111111111111111111111111111111111111111111111111111111111111' ^ (RAND()));
SELECT MIN(GET_LOCK('aaaaaaaaaaaaaaaaa',0) / '0b1111111111111111111111111111111111111111111111111111111111111111111111111' ^ (RAND()));
SELECT MIN(GET_LOCK('aaaaaaaaaaaaaaaaa',0) / '0b1111111111111111111111111111111111111111111111111111111111111111111111111' ^ (RAND()));
SELECT RELEASE_LOCK('aaaaaaaaaaaaaaaaa');
#
# Bug #11766094 - 59132: MIN() AND MAX() REMOVE UNSIGNEDNESS
#
CREATE TABLE t1 (a BIGINT UNSIGNED);
INSERT INTO t1 VALUES (18446668621106209655);
SELECT MAX(LENGTH(a)), LENGTH(MAX(a)), MIN(a), MAX(a), CONCAT(MIN(a)), CONCAT(MAX(a)) FROM t1;
MAX(LENGTH(a)) LENGTH(MAX(a)) MIN(a) MAX(a) CONCAT(MIN(a)) CONCAT(MAX(a))
20 20 18446668621106209655 18446668621106209655 18446668621106209655 18446668621106209655
DROP TABLE t1;
#
# Bug #11766270 59343: YEAR(4): INCORRECT RESULT AND VALGRIND WARNINGS WITH MIN/MAX, UNION
#
CREATE TABLE t1(f1 YEAR(4));
INSERT INTO t1 VALUES (0000),(2001);
(SELECT MAX(f1) FROM t1) UNION (SELECT MAX(f1) FROM t1);
Catalog Database Table Table_alias Column Column_alias Type Length Max length Is_null Flags Decimals Charsetnr
def MAX(f1) MAX(f1) 13 4 4 Y 32864 0 63
MAX(f1)
2001
DROP TABLE t1;
#
End of 5.1 tests
#
# Bug#52123 Assertion failed: aggregator == aggr->Aggrtype(),
# file .\item_sum.cc, line 587
#
CREATE TABLE t1(a int, KEY(a));
INSERT INTO t1 VALUES (1), (2);
SELECT 1 FROM t1 ORDER BY AVG(DISTINCT a);
ERROR HY000: Expression #1 of ORDER BY contains aggregate function and applies to the result of a non-aggregated query
DROP TABLE t1;
#
# Bug#55648: Server crash on MIN/MAX on maximum time value
#
CREATE TABLE t1(c1 TIME NOT NULL);
INSERT INTO t1 VALUES('837:59:59');
INSERT INTO t1 VALUES('838:59:59');
SELECT MAX(c1) FROM t1;
MAX(c1)
838:59:59
DROP TABLE t1;
# End of the bug#55648
#
# Bug#56120: Failed assertion on MIN/MAX on negative time value
#
CREATE TABLE t1(c1 TIME NOT NULL);
INSERT INTO t1 VALUES('-00:00:01');
SELECT MAX(c1),MIN(c1) FROM t1;
MAX(c1) MIN(c1)
-00:00:01 -00:00:01
DROP TABLE t1;
# End of the bug#56120
#
# Bug#57932 "query with AVG(DISTINCT) returns NULL if last
# aggregated value was NULL"
#
CREATE TABLE t1 (col_int_nokey int(11));
INSERT INTO t1 VALUES (7),(8),(NULL);
SELECT AVG(DISTINCT col_int_nokey) FROM t1;
AVG(DISTINCT col_int_nokey)
7.5000
SELECT AVG(DISTINCT outr.col_int_nokey) FROM t1 AS outr LEFT JOIN t1 AS outr2 ON
outr.col_int_nokey = outr2.col_int_nokey;
AVG(DISTINCT outr.col_int_nokey)
7.5000
DROP TABLE t1;
# End of the bug#57932
#
# BUG#12773464 - 61925: WRONG RESULT WITH AGGREGATE + NOT BETWEEN + KEY
#
CREATE TABLE t1 (a int, KEY (a));
INSERT INTO t1 VALUES (1),(2),(3),(4),(5),(6),(7),(8),(9),(10);
SELECT MAX(a) FROM t1 WHERE a NOT BETWEEN 3 AND 9;
MAX(a)
10
DROP TABLE t1;
#
# Bug#13724099 1032 BYTE MEMORY LEAK NEW_CACHED_ITEM IN
# SUBQUERY WITH GROUPING OF OUTER COLUMN
#
CREATE TABLE t1 (
a BLOB,
b INT)
engine=innodb;
INSERT INTO t1 VALUES ('a', 0);
SELECT 0 FROM t1
WHERE 0 = (SELECT group_concat(b)
FROM t1 t GROUP BY t1.a)
;
0
0
DROP TABLE t1;
#
# Bug#32552332 - CAN'T WRITE; DUPLICATE KEY IN TABLE '/TMP/#SQL...'
#
CREATE TABLE tr (c1 INT);
INSERT INTO tr VALUES (1);
CREATE FUNCTION seq_1_to_2() RETURNS INT
BEGIN
DECLARE limit_value, return_value INT;
SET limit_value = 2;
SELECT c1 INTO return_value FROM tr;
IF (return_value < limit_value) THEN
UPDATE tr SET c1 = c1 + 1;
ELSE
UPDATE tr SET c1 = 1;
END IF;
RETURN (return_value);
END|
CREATE TABLE t1 (c1 INT);
INSERT INTO t1 VALUES (10);
INSERT INTO t1 VALUES (11);
SELECT seq_1_to_2() as seq, COUNT(*) FROM t1 GROUP BY seq;
seq COUNT(*)
1 1
2 1
SELECT FLOOR(seq_1_to_2() * 2) AS val, COUNT(*) FROM t1 GROUP BY val;
val COUNT(*)
2 1
4 1
SELECT val, COUNT(*) FROM (SELECT FLOOR(seq_1_to_2())+1 val FROM t1) x
GROUP BY x.val;
val COUNT(*)
2 1
3 1
DROP TABLE t1, tr;
DROP FUNCTION seq_1_to_2;