temporary tables of subquery in the from clause just skipped during processing QC tables (BUG#11522)
This commit is contained in:
parent
009e2457d9
commit
28a93877ca
File diff suppressed because one or more lines are too long
@ -730,4 +730,30 @@ flush query cache;
|
||||
|
||||
drop table t1, t2;
|
||||
|
||||
create table t1 (a int);
|
||||
insert into t1 values (1);
|
||||
reset query cache;
|
||||
flush status;
|
||||
|
||||
#
|
||||
# queries with subquery in the FROM clause (BUG#11522)
|
||||
#
|
||||
select * from (select * from t1) a;
|
||||
show status like "Qcache_queries_in_cache";
|
||||
show status like "Qcache_inserts";
|
||||
show status like "Qcache_hits";
|
||||
select * from (select * from t1) a;
|
||||
show status like "Qcache_queries_in_cache";
|
||||
show status like "Qcache_inserts";
|
||||
show status like "Qcache_hits";
|
||||
insert into t1 values (2);
|
||||
show status like "Qcache_queries_in_cache";
|
||||
show status like "Qcache_inserts";
|
||||
show status like "Qcache_hits";
|
||||
select * from (select * from t1) a;
|
||||
show status like "Qcache_queries_in_cache";
|
||||
show status like "Qcache_inserts";
|
||||
show status like "Qcache_hits";
|
||||
drop table t1;
|
||||
|
||||
set GLOBAL query_cache_size=0;
|
||||
|
@ -2114,6 +2114,13 @@ my_bool Query_cache::register_all_tables(Query_cache_block *block,
|
||||
|
||||
for (n=0; tables_used; tables_used=tables_used->next, n++, block_table++)
|
||||
{
|
||||
if (tables_used->derived)
|
||||
{
|
||||
DBUG_PRINT("qcache", ("derived table skipped"));
|
||||
n--;
|
||||
block_table--;
|
||||
continue;
|
||||
}
|
||||
DBUG_PRINT("qcache",
|
||||
("table %s, db %s, openinfo at 0x%lx, keylen %u, key at 0x%lx",
|
||||
tables_used->real_name, tables_used->db,
|
||||
@ -2671,7 +2678,8 @@ TABLE_COUNTER_TYPE Query_cache::is_cacheable(THD *thd, uint32 query_len,
|
||||
table_alias_charset used here because it depends of
|
||||
lower_case_table_names variable
|
||||
*/
|
||||
if (tables_used->table->tmp_table != NO_TMP_TABLE ||
|
||||
if ((tables_used->table->tmp_table != NO_TMP_TABLE &&
|
||||
!tables_used->derived) ||
|
||||
(*tables_type & HA_CACHE_TBL_NOCACHE) ||
|
||||
(tables_used->db_length == 5 &&
|
||||
my_strnncoll(table_alias_charset, (uchar*)tables_used->db, 6,
|
||||
@ -2682,7 +2690,12 @@ TABLE_COUNTER_TYPE Query_cache::is_cacheable(THD *thd, uint32 query_len,
|
||||
other non-cacheable table(s)"));
|
||||
DBUG_RETURN(0);
|
||||
}
|
||||
if (tables_used->table->db_type == DB_TYPE_MRG_MYISAM)
|
||||
if (tables_used->derived)
|
||||
{
|
||||
table_count--;
|
||||
DBUG_PRINT("qcache", ("derived table skipped"));
|
||||
}
|
||||
else if (tables_used->table->db_type == DB_TYPE_MRG_MYISAM)
|
||||
{
|
||||
ha_myisammrg *handler = (ha_myisammrg *)tables_used->table->file;
|
||||
MYRG_INFO *file = handler->myrg_info();
|
||||
|
Loading…
x
Reference in New Issue
Block a user