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Directory :  /www/server/mysql/mysql-test/t/

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Current File : /www/server/mysql/mysql-test/t/filesort_merge.test
#
# 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= MyISAM;

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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