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Many fixes.

Browse Source 
I still have to make a test case for :

UPDATE from sub-select with derived table


mysql-test/r/multi_update.result:
  Test for found rows in multi-table update
mysql-test/r/subselect.result:
  Fix for new syntax for UNION's
mysql-test/t/multi_update.test:
  Test for found rows in multi-table update
mysql-test/t/subselect.test:
  Fix for new syntax for UNION's
sql/sql_cache.cc:
  Fix for a bug that involved derived table in sub-select in UPDATE or
  DELETE statement
sql/sql_derived.cc:
  Fix for a bug that involved derived table in sub-select in UPDATE or
  DELETE statement
sql/sql_parse.cc:
  Fix for a bug that involved derived table in sub-select in UPDATE or
  DELETE statement
sql/sql_show.cc:
  Fix for th eshow of replication status
sql/sql_yacc.yy:
  Three fixes.
  
  One for not allowing mixing of braces and non-braces in UNION's
  
  Second one for table aliases in multi-table deletes / updates
  
  Third one for using derived tables within sub-selects for 
  UPDATE / DELETE commands
This commit is contained in:
unknown
2002-12-24 13:58:07 +02:00
parent 9528812119
commit 7a74837e00
9 changed files with 53 additions and 20 deletions
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15
mysql-test/r/multi_update.result
View File

@ -235,4 +235,19 @@ select * from t2;
n d
1 30
1 30
UPDATE t1 a ,t2 b SET t1.d=t2.d,t2.d=30 WHERE a.n=b.n;
select * from t1;
n d
1 30
3 2
select * from t2;
n d
1 30
1 30
DELETE t1, t2 FROM t1 a,t2 b where a.n=b.n;
select * from t1;
n d
3 2
select * from t2;
n d
drop table t1,t2;

6
mysql-test/r/subselect.result
View File

@ -86,20 +86,20 @@ select * from t2 where t2.b=(select a from t3 order by 1 desc limit 1);
a b
1 7
2 7
select * from t2 where t2.b=(select a from t3 order by 1 desc limit 1)
(select * from t2 where t2.b=(select a from t3 order by 1 desc limit 1))
union (select * from t4 order by a limit 2) limit 3;
a b
1 7
2 7
3 8
select * from t2 where t2.b=(select a from t3 order by 1 desc limit 1)
(select * from t2 where t2.b=(select a from t3 order by 1 desc limit 1))
union (select * from t4 where t4.b=(select max(t2.a)*4 from t2) order by a);
a b
1 7
2 7
3 8
4 8
explain select * from t2 where t2.b=(select a from t3 order by 1 desc limit 1)
explain (select * from t2 where t2.b=(select a from t3 order by 1 desc limit 1))
union (select * from t4 where t4.b=(select max(t2.a)*4 from t2) order by a);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where

6
mysql-test/t/multi_update.test
View File

@ -213,4 +213,10 @@ insert into t2 values(1,10),(1,20);
UPDATE t1,t2 SET t1.d=t2.d,t2.d=30 WHERE t1.n=t2.n;
select * from t1;
select * from t2;
UPDATE t1 a ,t2 b SET t1.d=t2.d,t2.d=30 WHERE a.n=b.n;
select * from t1;
select * from t2;
DELETE t1, t2 FROM t1 a,t2 b where a.n=b.n;
select * from t1;
select * from t2;
drop table t1,t2;

6
mysql-test/t/subselect.test
View File

@ -44,11 +44,11 @@ select (select a from t3), a from t2;
select * from t2 where t2.a=(select a from t1);
insert into t3 values (6),(7),(3);
select * from t2 where t2.b=(select a from t3 order by 1 desc limit 1);
select * from t2 where t2.b=(select a from t3 order by 1 desc limit 1)
(select * from t2 where t2.b=(select a from t3 order by 1 desc limit 1))
union (select * from t4 order by a limit 2) limit 3;
select * from t2 where t2.b=(select a from t3 order by 1 desc limit 1)
(select * from t2 where t2.b=(select a from t3 order by 1 desc limit 1))
union (select * from t4 where t4.b=(select max(t2.a)*4 from t2) order by a);
explain select * from t2 where t2.b=(select a from t3 order by 1 desc limit 1)
explain (select * from t2 where t2.b=(select a from t3 order by 1 desc limit 1))
union (select * from t4 where t4.b=(select max(t2.a)*4 from t2) order by a);
select (select a from t3 where a<t2.a*4 order by 1 desc limit 1), a from t2;
select (select t3.a from t3 where a<8 order by 1 desc limit 1), a from