explain.test
上传用户:romrleung
上传日期:2022-05-23
资源大小:18897k
文件大小:1k
- #
- # Test of different EXPLAIN's
- --disable_warnings
- drop table if exists t1;
- --enable_warnings
- create table t1 (id int not null, str char(10), unique(str));
- explain select * from t1;
- insert into t1 values (1, null),(2, null),(3, "foo"),(4, "bar");
- select * from t1 where str is null;
- select * from t1 where str="foo";
- explain select * from t1 where str is null;
- explain select * from t1 where str="foo";
- explain select * from t1 ignore key (str) where str="foo";
- explain select * from t1 use key (str,str) where str="foo";
- #The following should give errors
- --error 1072
- explain select * from t1 use key (str,str,foo) where str="foo";
- --error 1072
- explain select * from t1 ignore key (str,str,foo) where str="foo";
- drop table t1;
- explain select 1;
- create table t1 (a int not null);
- explain select count(*) from t1;
- insert into t1 values(1);
- explain select count(*) from t1;
- insert into t1 values(1);
- explain select count(*) from t1;
- drop table t1;
- #
- # Bug #3403 Wrong encoding in EXPLAIN SELECT output
- #
- set names koi8r;
- create table 粤