mirror of
https://github.com/MariaDB/server.git
synced 2025-08-20 05:03:09 +03:00
Merge
This commit is contained in:
@@ -1,4 +1,8 @@
|
||||
DROP TABLE IF EXISTS t1, t2;
|
||||
set @save_tmp_table_size=@@tmp_table_size;
|
||||
set @save_max_heap_table_size=@@max_heap_table_size;
|
||||
set @save_storage_engine=@@storage_engine;
|
||||
set storage_engine=MYISAM;
|
||||
CREATE TABLE t1 (id INTEGER);
|
||||
CREATE TABLE t2 (id INTEGER);
|
||||
INSERT INTO t1 (id) VALUES (1), (1), (1),(1);
|
||||
@@ -120,3 +124,57 @@ sm
|
||||
536887296
|
||||
DROP TABLE t1;
|
||||
DROP TABLE t2;
|
||||
SET @@tmp_table_size=@save_tmp_table_size;
|
||||
SET @@max_heap_table_size=@save_max_heap_table_size;
|
||||
#
|
||||
# Bug mdev-4311: COUNT(DISTINCT...) requiring a file for Unique
|
||||
# (bug #68749)
|
||||
#
|
||||
set @save_storage_engine=@@storage_engine;
|
||||
set storage_engine=INNODB;
|
||||
CREATE TABLE t1 (id INTEGER) ENGINE=InnoDB;
|
||||
CREATE TABLE t2 (id INTEGER) ENGINE=InnoDB;
|
||||
INSERT INTO t1 (id) VALUES (1), (1), (1),(1);
|
||||
INSERT INTO t1 (id) SELECT id FROM t1;
|
||||
INSERT INTO t1 (id) SELECT id FROM t1;
|
||||
INSERT INTO t1 (id) SELECT id FROM t1;
|
||||
INSERT INTO t1 (id) SELECT id FROM t1;
|
||||
INSERT INTO t1 (id) SELECT id FROM t1;
|
||||
INSERT INTO t1 SELECT id+1 FROM t1;
|
||||
INSERT INTO t1 SELECT id+2 FROM t1;
|
||||
INSERT INTO t1 SELECT id+4 FROM t1;
|
||||
INSERT INTO t1 SELECT id+8 FROM t1;
|
||||
INSERT INTO t1 SELECT id+16 FROM t1;
|
||||
INSERT INTO t1 SELECT id+32 FROM t1;
|
||||
INSERT INTO t1 SELECT id+64 FROM t1;
|
||||
INSERT INTO t1 SELECT id+128 FROM t1;
|
||||
INSERT INTO t1 SELECT id+256 FROM t1;
|
||||
INSERT INTO t1 SELECT id+512 FROM t1;
|
||||
INSERT INTO t1 SELECT id+1024 FROM t1;
|
||||
INSERT INTO t1 SELECT id+2048 FROM t1;
|
||||
INSERT INTO t1 SELECT id+4096 FROM t1;
|
||||
INSERT INTO t1 SELECT id+8192 FROM t1;
|
||||
INSERT INTO t2 SELECT id FROM t1 ORDER BY id*rand();
|
||||
INSERT INTO t2 VALUE(NULL);
|
||||
# With default tmp_table_size / max_heap_table_size
|
||||
SELECT SQL_NO_CACHE count(DISTINCT id) sm FROM t2;
|
||||
sm
|
||||
16384
|
||||
set @@tmp_table_size=1024*256;
|
||||
# With reduced tmp_table_size
|
||||
SELECT SQL_NO_CACHE count(DISTINCT id) sm FROM t2;
|
||||
sm
|
||||
16384
|
||||
set @@tmp_table_size=@save_tmp_table_size;
|
||||
SET @@max_heap_table_size=1024*256;
|
||||
# With reduced max_heap_table_size
|
||||
SELECT SQL_NO_CACHE count(DISTINCT id) sm FROM t2;
|
||||
sm
|
||||
16384
|
||||
SET @@max_heap_table_size=@save_max_heap_table_size;
|
||||
# Back to default tmp_table_size / max_heap_table_size
|
||||
SELECT SQL_NO_CACHE count(DISTINCT id) sm FROM t2;
|
||||
sm
|
||||
16384
|
||||
DROP TABLE t1,t2;
|
||||
set storage_engine=@save_storage_engine;
|
||||
|
Reference in New Issue
Block a user