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

Fixed LP bug #889750.

Browse Source 
If the optimizer switch 'semijoin_with_cache' is set to 'off' then 
join cache cannot be used to join inner tables of a semijoin.

Also fixed a bug in the function check_join_cache_usage() that led
to wrong output of the EXPLAIN commands for some test cases.
This commit is contained in:
Igor Babaev
2011-11-15 13:03:00 -08:00
parent db0aed9348
commit b4b7d941fe
30 changed files with 183 additions and 52 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
sql/sql_select.h
View File

@ -391,6 +391,10 @@ typedef struct st_join_table {
{
return first_sj_inner_tab != NULL;
}
bool is_inner_table_of_semijoin()
{
return emb_sj_nest != NULL;
}
bool is_inner_table_of_outer_join()
{
return first_inner != NULL;