| Current Path : /usr/opt/mysql57/mysql-test/suite/ndb/r/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
| Current File : //usr/opt/mysql57/mysql-test/suite/ndb/r/ndb_one_fragment.result |
set max_heap_table_size = 286720000; create table t1 (a int primary key) engine=memory; load data local infile 'suite/ndb/data/table_data10000.dat' into table t1 columns terminated by ' ' (a, @col2); insert into t1 select a + 10000 from t1;; insert into t1 select a + 10000 * 2 from t1;; insert into t1 select a + 10000 * 2 * 2 from t1;; insert into t1 select a + 10000 * 2 * 2 * 2 from t1;; select count(*) from t1; count(*) 160000 alter table t1 engine=ndbcluster comment='NDB_TABLE=NOLOGGING' partition by key() partitions 1; create table t2 (a int primary key) engine=memory; insert into t2 select a from t1; the left join below should result in scanning t2 and do pk lookups in t1 explain select if(isnull(t1.a),t2.a,NULL) missed, count(*) rows from t2 left join t1 on t1.a=t2.a group by if(isnull(t1.a),t2.a,NULL); id select_type table partitions type possible_keys key key_len ref rows filtered Extra 1 SIMPLE t2 NULL ALL NULL NULL NULL NULL # # Using temporary; Using filesort 1 SIMPLE t1 p0 eq_ref PRIMARY PRIMARY 4 test.t2.a # # NULL Warnings: Note 1003 /* select#1 */ select if(isnull(`test`.`t1`.`a`),`test`.`t2`.`a`,NULL) AS `missed`,count(0) AS `rows` from `test`.`t2` left join `test`.`t1` on((`test`.`t1`.`a` = `test`.`t2`.`a`)) where 1 group by if(isnull(`test`.`t1`.`a`),`test`.`t2`.`a`,NULL) the result rows with missed equal to NULL should count all rows (160000) the other rows are the failed lookups and there should not be any such select if(isnull(t1.a),t2.a,NULL) missed, count(*) rows from t2 left join t1 on t1.a=t2.a group by if(isnull(t1.a),t2.a,NULL); missed rows NULL 160000 verify that it is not possible to reinsert all rows in t1 to itself affected rows should be zero set @save_max_error_count = @@max_error_count; set @@max_error_count = 0; insert ignore into t1 select a from t2 limit 0, 10000; affected rows: 0 info: Records: 10000 Duplicates: 10000 Warnings: 10000 Warnings: insert ignore into t1 select a from t2 limit 10000, 10000; affected rows: 0 info: Records: 10000 Duplicates: 10000 Warnings: 10000 Warnings: insert ignore into t1 select a from t2 limit 20000, 10000; affected rows: 0 info: Records: 10000 Duplicates: 10000 Warnings: 10000 Warnings: insert ignore into t1 select a from t2 limit 30000, 10000; affected rows: 0 info: Records: 10000 Duplicates: 10000 Warnings: 10000 Warnings: insert ignore into t1 select a from t2 limit 40000, 10000; affected rows: 0 info: Records: 10000 Duplicates: 10000 Warnings: 10000 Warnings: insert ignore into t1 select a from t2 limit 50000, 10000; affected rows: 0 info: Records: 10000 Duplicates: 10000 Warnings: 10000 Warnings: insert ignore into t1 select a from t2 limit 60000, 10000; affected rows: 0 info: Records: 10000 Duplicates: 10000 Warnings: 10000 Warnings: insert ignore into t1 select a from t2 limit 70000, 10000; affected rows: 0 info: Records: 10000 Duplicates: 10000 Warnings: 10000 Warnings: insert ignore into t1 select a from t2 limit 80000, 10000; affected rows: 0 info: Records: 10000 Duplicates: 10000 Warnings: 10000 Warnings: insert ignore into t1 select a from t2 limit 90000, 10000; affected rows: 0 info: Records: 10000 Duplicates: 10000 Warnings: 10000 Warnings: insert ignore into t1 select a from t2 limit 100000, 10000; affected rows: 0 info: Records: 10000 Duplicates: 10000 Warnings: 10000 Warnings: insert ignore into t1 select a from t2 limit 110000, 10000; affected rows: 0 info: Records: 10000 Duplicates: 10000 Warnings: 10000 Warnings: insert ignore into t1 select a from t2 limit 120000, 10000; affected rows: 0 info: Records: 10000 Duplicates: 10000 Warnings: 10000 Warnings: insert ignore into t1 select a from t2 limit 130000, 10000; affected rows: 0 info: Records: 10000 Duplicates: 10000 Warnings: 10000 Warnings: insert ignore into t1 select a from t2 limit 140000, 10000; affected rows: 0 info: Records: 10000 Duplicates: 10000 Warnings: 10000 Warnings: insert ignore into t1 select a from t2 limit 150000, 10000; affected rows: 0 info: Records: 10000 Duplicates: 10000 Warnings: 10000 Warnings: set @@max_error_count = @save_max_error_count; drop table t1, t2;