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

A fix for a bug with derived tables within subselect

Browse Source 
within derived tables within ......
This commit is contained in:
unknown
2002-11-26 16:49:55 +02:00
parent a14db06bfc
commit ae729f9315
3 changed files with 16 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
mysql-test/r/derived.result
View File

@ -65,3 +65,6 @@ a t
19 19
20 20
drop table if exists t1;
SELECT * FROM (SELECT (SELECT * FROM (SELECT 1 as a)));
(SELECT * FROM (SELECT 1 as a))
1

1
mysql-test/t/derived.test
View File

@ -34,3 +34,4 @@ while ($1)
enable_query_log;
SELECT * FROM (SELECT * FROM t1) ORDER BY a ASC LIMIT 0,20;
drop table if exists t1;
SELECT * FROM (SELECT (SELECT * FROM (SELECT 1 as a)));

18
sql/sql_derived.cc
View File

@ -50,15 +50,19 @@ int mysql_derived(THD *thd, LEX *lex, SELECT_LEX_UNIT *unit, TABLE_LIST *t)
if (res)
DBUG_RETURN(-1);
for (TABLE_LIST *cursor= (TABLE_LIST *)tables;
cursor;
cursor=cursor->next)
for (SELECT_LEX *ssl= sl; ssl; ssl= ssl->next_select_in_list())
{
if (cursor->derived)
TABLE_LIST *t_tables= (TABLE_LIST *)ssl->table_list.first;
for (TABLE_LIST *cursor= (TABLE_LIST *)t_tables;
cursor;
cursor=cursor->next)
{
res= mysql_derived(thd, lex, (SELECT_LEX_UNIT *)cursor->derived,
cursor);
if (res) DBUG_RETURN(res);
if (cursor->derived)
{
res= mysql_derived(thd, lex, (SELECT_LEX_UNIT *)cursor->derived,
cursor);
if (res) DBUG_RETURN(res);
}
}
}
Item *item;