explain.test 1.22 KB
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# Test of different EXPLAIN's

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--disable_warnings
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drop table if exists t1;
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--enable_warnings
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create table t1 (id int not null, str char(10), unique(str));
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explain select * from t1;
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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
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--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";
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drop table t1;

explain select 1;
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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;
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# Bug #3403 Wrong encoding in EXPLAIN SELECT output
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set names koi8r;
create table  (0 int, 1 int, key 0 (0), key 01 (0,1));
insert into  (0) values (1);
insert into  (0) values (2);
explain select 0 from  where 0=1;
drop table ;
set names latin1;