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some bug fixes and tests for those.

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I am pushing now, because :

* I have a fix for crashing bug
* Sanja will destroy my changes in sub-select test ... ;)


mysql-test/r/derived.result:
  tests for recent bugs
mysql-test/r/subselect.result:
  tests for recent bugs
mysql-test/t/derived.test:
  tests for recent bugs
mysql-test/t/subselect.test:
  tests for recent bugs
sql/sql_derived.cc:
  Luckily, we have `make test` so that my last changes could be re-checked
This commit is contained in:
unknown
2002-11-30 19:53:31 +02:00
parent b496692663
commit b790bc24d8
5 changed files with 39 additions and 10 deletions
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26
mysql-test/r/derived.result
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@ -30,6 +30,29 @@ SELECT 1 FROM (SELECT 1) a WHERE a=2;
Unknown column 'a' in 'where clause'
SELECT (SELECT 1) as a FROM (SELECT 1 FROM t1 HAVING a=1) as a;
Unknown column 'a' in 'having clause'
select * from t1 as x1, (select * from t1) as x2;
a b a b
1 a 1 a
2 b 1 a
3 c 1 a
3 c 1 a
1 a 2 b
2 b 2 b
3 c 2 b
3 c 2 b
1 a 3 c
2 b 3 c
3 c 3 c
3 c 3 c
1 a 3 c
2 b 3 c
3 c 3 c
3 c 3 c
explain select * from t1 as x1, (select * from t1) as x2;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY x1 ALL NULL NULL NULL NULL 4
1 PRIMARY <derived2> ALL NULL NULL NULL NULL 4
2 DERIVED x1 ALL NULL NULL NULL NULL 4
drop table if exists t1.t2,t3;
select * from (select 1) as a;
1
@ -66,7 +89,8 @@ a t
20 20
explain select count(*) from t1 as tt1, (select * from t1) as tt2;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE Select tables optimized away
1 PRIMARY Select tables optimized away
2 DERIVED tt1 index NULL a 4 NULL 10000 Using index
drop table if exists t1;
SELECT * FROM (SELECT (SELECT * FROM (SELECT 1 as a) as a )) as b;
(SELECT * FROM (SELECT 1 as a) as a )