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#
# Added to get better coverage of merge_buffers()
#
CREATE TABLE t1 (
id int NOT NULL auto_increment PRIMARY KEY,
b int NOT NULL,
c datetime NOT NULL,
INDEX idx_b(b),
INDEX idx_c(c)
) ENGINE=InnoDB;
CREATE TABLE t2 (
b int NOT NULL auto_increment PRIMARY KEY,
c datetime NOT NULL
) ENGINE= InnoDB;
INSERT INTO t2(c) VALUES ('2007-01-01');
INSERT INTO t2(c) SELECT c FROM t2;
INSERT INTO t2(c) SELECT c FROM t2;
INSERT INTO t2(c) SELECT c FROM t2;
INSERT INTO t2(c) SELECT c FROM t2;
INSERT INTO t2(c) SELECT c FROM t2;
INSERT INTO t2(c) SELECT c FROM t2;
INSERT INTO t2(c) SELECT c FROM t2;
INSERT INTO t2(c) SELECT c FROM t2;
INSERT INTO t2(c) SELECT c FROM t2;
INSERT INTO t2(c) SELECT c FROM t2;
INSERT INTO t1(b,c) SELECT b,c FROM t2;
UPDATE t2 SET c='2007-01-02';
INSERT INTO t1(b,c) SELECT b,c FROM t2;
UPDATE t2 SET c='2007-01-03';
INSERT INTO t1(b,c) SELECT b,c FROM t2;
-- disable_query_log
-- disable_result_log
ANALYZE TABLE t1;
ANALYZE TABLE t2;
-- enable_result_log
-- enable_query_log
set @@sort_buffer_size=8192;
SELECT COUNT(*) FROM t1;
--replace_column 10 #
EXPLAIN
SELECT COUNT(*) FROM t1 FORCE INDEX(idx_b, idx_c)
WHERE (c >= '2007-01-02' AND c <= '2007-01-03') OR b >= 1;
SELECT COUNT(*) FROM t1 FORCE INDEX(idx_b, idx_c)
WHERE (c >= '2007-01-02' AND c <= '2007-01-03') OR b >= 1;
set @@sort_buffer_size=default;
DROP TABLE t1,t2;
#
# Added to get coverage of the re-use of chunk buffers in filesort.
#
set optimizer_switch='semijoin=off';
set optimizer_switch='materialization=off';
CREATE TABLE t1 (topic BIGINT NOT NULL DEFAULT 0);
disable_query_log;
let $1= 1370;
while ($1)
{
eval INSERT INTO t1 (topic) VALUES($1);
dec $1;
}
enable_query_log;
SET @@session.sort_buffer_size=32768;
SELECT * from t1 WHERE topic IN
(SELECT topic FROM t1 GROUP BY topic HAVING topic < 2000)
LIMIT 2
;
SET @@session.sort_buffer_size=DEFAULT;
drop table t1;
set optimizer_switch=default;
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