database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-08-01 03:47:19 +03:00
Code Activity

some bug fixes and tests for those.

Browse Source 
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
Download Patch File Download Diff File Expand all files Collapse all files

26
mysql-test/r/derived.result
View File

@ -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 )

12
mysql-test/r/subselect.result
View File

@ -32,15 +32,15 @@ a
1
SELECT 1 FROM (SELECT (SELECT a) b) c;
Unknown column 'a' in 'field list'
SELECT * FROM (SELECT 1 as id) WHERE id IN (SELECT * FROM (SELECT 1 as id) ORDER BY id LIMIT 1);
SELECT * FROM (SELECT 1 as id) b WHERE id IN (SELECT * FROM (SELECT 1 as id) c ORDER BY id LIMIT 1);
id
1
SELECT * FROM (SELECT 1) WHERE 1 IN (SELECT 1,1);
SELECT * FROM (SELECT 1) a WHERE 1 IN (SELECT 1,1);
Cardinality error (more/less than 1 columns)
SELECT 1 IN (SELECT 1);
1 IN (SELECT 1)
1
SELECT 1 FROM (SELECT 1 as a) WHERE 1 IN (SELECT (SELECT a));
SELECT 1 FROM (SELECT 1 as a) b WHERE 1 IN (SELECT (SELECT a));
1
1
drop table if exists t1,t2,t3,t4,t5,t6,t7,t8;
@ -524,7 +524,7 @@ x y
4 2
2 1
drop table t1, t2;
SELECT * FROM (SELECT 1) WHERE 1 IN (SELECT *);
SELECT * FROM (SELECT 1) b WHERE 1 IN (SELECT *);
No tables used
drop table if exists t;
CREATE TABLE t (id int(11) default NULL, KEY id (id)) TYPE=MyISAM CHARSET=latin1;
@ -536,7 +536,7 @@ EXPLAIN SELECT * FROM t WHERE id IN (SELECT 1);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t ref id id 5 const 1 Using where; Using index
Warnings:
Note 1246 Select 2 was reduced during optimisation
Note 1247 Select 2 was reduced during optimisation
SELECT * FROM t WHERE id IN (SELECT 1 UNION SELECT 3);
id
1
@ -548,7 +548,7 @@ id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t ref id id 5 const 1 Using where; Using index
3 SUBSELECT No tables used
Warnings:
Note 1246 Select 2 was reduced during optimisation
Note 1247 Select 2 was reduced during optimisation
EXPLAIN SELECT * FROM t WHERE id IN (SELECT 1 UNION SELECT 3);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t index NULL id 5 NULL 2 Using where; Using index

2
mysql-test/t/derived.test
View File

@ -18,6 +18,8 @@ SELECT a,2 as a FROM (SELECT '1' as a) b HAVING a=1;
SELECT 1 FROM (SELECT 1) a WHERE a=2;
--error 1054
SELECT (SELECT 1) as a FROM (SELECT 1 FROM t1 HAVING a=1) as a;
select * from t1 as x1, (select * from t1) as x2;
explain select * from t1 as x1, (select * from t1) as x2;
drop table if exists t1.t2,t3;
select * from (select 1) as a;
select a from (select 1 as a) as b;

4
mysql-test/t/subselect.test
View File

@ -17,7 +17,7 @@ SELECT 1 as a FROM (SELECT 1) as b HAVING (SELECT a)=1;
SELECT 1 FROM (SELECT (SELECT a) b) c;
SELECT * FROM (SELECT 1 as id) b WHERE id IN (SELECT * FROM (SELECT 1 as id) c ORDER BY id LIMIT 1);
-- error 1239
SELECT * FROM (SELECT 1)a WHERE 1 IN (SELECT 1,1);
SELECT * FROM (SELECT 1) a WHERE 1 IN (SELECT 1,1);
SELECT 1 IN (SELECT 1);
SELECT 1 FROM (SELECT 1 as a) b WHERE 1 IN (SELECT (SELECT a));
drop table if exists t1,t2,t3,t4,t5,t6,t7,t8;
@ -313,7 +313,7 @@ select * from t1;
drop table t1, t2;
-- error 1096
SELECT * FROM (SELECT 1) WHERE 1 IN (SELECT *);
SELECT * FROM (SELECT 1) b WHERE 1 IN (SELECT *);
drop table if exists t;
CREATE TABLE t (id int(11) default NULL, KEY id (id)) TYPE=MyISAM CHARSET=latin1;
INSERT INTO t VALUES (1),(2);

5
sql/sql_derived.cc
View File

@ -107,7 +107,10 @@ int mysql_derived(THD *thd, LEX *lex, SELECT_LEX_UNIT *unit, TABLE_LIST *t)
table->derived_select_number= sl->select_number;
table->tmp_table=TMP_TABLE;
if (lex->describe)
tables->table_list->table=tables->table; // to fix a problem in EXPLAIN
{
if (tables)
tables->table_list->table=tables->table; // to fix a problem in EXPLAIN
}
else
sl->exclude();
t->db=(char *)"";