config root man

--disable_warnings
DROP TABLE IF EXISTS t1,t2,t3,t4;
--enable_warnings
# Create tables
CREATE TABLE t1(c1 YEAR NOT NULL,c2 YEAR, PRIMARY KEY(c1));
CREATE TABLE t2(c1 YEAR NOT NULL, c2 YEAR, UNIQUE INDEX idx(c1,c2));
CREATE TABLE t3(c1 YEAR(4) NOT NULL,c2 YEAR(4), PRIMARY KEY(c1));
CREATE TABLE t4(c1 YEAR(4), c2 YEAR(4), UNIQUE INDEX idx(c1,c2));
#Insert as 4-digit number format in the range '1901' to '2155'
INSERT INTO t1 VALUES (1901,1901),(1970,1970),(1999,1999),(2000,2000),(2155,2155);
INSERT INTO t2 VALUES (1901,1901),(1970,1970),(1999,1999),(2000,2000),(2155,2155);
INSERT INTO t3 VALUES (1901,1901),(1970,1970),(1999,1999),(2000,2000),(2155,2155);
INSERT INTO t4 VALUES (1901,1901),(1970,1970),(1999,1999),(2000,2000),(2155,2155);
#Insert as 4-digit string format in the range '1901' to '2155'
INSERT INTO t1 VALUES ('1902','1902'),('1971','1971'),('1998','1998'),('2001','2001'),('2154','2154');
INSERT INTO t2 VALUES ('1902','1902'),('1971','1971'),('1998','1998'),('2001','2001'),('2154','2154');
INSERT INTO t3 VALUES ('1902','1902'),('1971','1971'),('1998','1998'),('2001','2001'),('2154','2154');
INSERT INTO t4 VALUES ('1902','1902'),('1971','1971'),('1998','1998'),('2001','2001'),('2154','2154');
#Insert as 2-digit number format
INSERT INTO t1 VALUES (04,04),(64,64),(69,69),(97,97);
INSERT INTO t2 VALUES (04,04),(64,64),(69,69),(97,97);
INSERT INTO t3 VALUES (04,04),(64,64),(69,69),(97,97);
INSERT INTO t4 VALUES (04,04),(64,64),(69,69),(97,97);
#Insert as 2-digit string format
INSERT INTO t1 VALUES ('05','05'),('65','65'),('75','75'),('95','95');
INSERT INTO t2 VALUES ('05','05'),('65','65'),('75','75'),('95','95');
INSERT INTO t3 VALUES ('05','05'),('65','65'),('75','75'),('95','95');
INSERT INTO t4 VALUES ('05','05'),('65','65'),('75','75'),('95','95');
#Insert permissible NULLs
INSERT INTO t1 VALUES ('09',null),('61',null),('79',null),('96',null);
INSERT INTO t2 VALUES ('09',null),('61',null),('79',null),('96',null);
INSERT INTO t3 VALUES ('09',null),('61',null),('79',null),('96',null);
INSERT INTO t4 VALUES ('09',null),('61',null),('79',null),('96',null);
--sorted_result
SELECT * FROM t1;
--sorted_result
SELECT * FROM t2;
--sorted_result
SELECT * FROM t3;
--sorted_result
SELECT * FROM t4;
#Deleting the specified rows
--sorted_result
SELECT c1 FROM t1 WHERE c1='2005';
DELETE FROM t1 WHERE c1='2005';
--sorted_result
SELECT c1 FROM t1;

# Delete rows with null attributes
--sorted_result
SELECT c2 FROM t2 WHERE c2=null;
DELETE FROM t2 WHERE c2=null LIMIT 2;
--sorted_result
SELECT c2 FROM t2;

#Delete order by limit
--sorted_result
SELECT c1 FROM t4 WHERE c1 < '55';
DELETE FROM t4 WHERE c1 < '65' ORDER BY c1 LIMIT 5;
--sorted_result
SELECT c1 FROM t4;

#Delete by range values
DELETE FROM t2 WHERE c1=2009 AND c2=null;
--sorted_result
SELECT c2 FROM t2;
DELETE FROM t1 WHERE c1=1979 OR c1=2154;
--sorted_result
SELECT c2 FROM t1;
DELETE FROM t4 WHERE c2 IN (01,54,65,69,null) LIMIT 2;
--sorted_result
SELECT c1 FROM t4;

#Multi table delete
DELETE t3,t4 FROM t3,t4 WHERE t3.c1=61 AND t4.c2=4;
 
# Delete using various access methods

# Delete using Const
# EXPLAIN SELECT * FROM t1 WHERE c1=2064 AND c2=2064;
DELETE FROM t1 WHERE c1=2064 AND c2=2064;
--sorted_result
SELECT * FROM t1;

# Delete using range
# EXPLAIN SELECT * FROM t1 WHERE c1 BETWEEN 2000 AND 2010;
DELETE FROM t1 WHERE c1 BETWEEN 2000 AND 2010 LIMIT 2; 
--sorted_result
SELECT * FROM t1;
# EXPLAIN SELECT * FROM t1 WHERE c1 IN (2155,2009,1975);
DELETE FROM t1 WHERE c1 IN (2155,2009,1975) LIMIT 2;
--sorted_result
SELECT * FROM t1;

# Delete using eq_ref
# EXPLAIN SELECT * FROM t1,t2 WHERE t1.c1=t2.c1 AND t1.c2=t2.c2;
DELETE t1,t2 FROM t1,t2 WHERE t1.c1=t2.c1 AND t1.c2=t2.c2;

--sorted_result
SELECT * FROM t1;
--sorted_result
SELECT * FROM t2;
--sorted_result
SELECT * FROM t3;
--sorted_result
SELECT * FROM t4;

#Drop tables
DROP TABLE IF EXISTS t1,t2,t3,t4;