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

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Current File : /www/server/mysql/mysql-test/t/multi_update_tiny_hash.test
#
# Test of update statement that uses many tables,
# --max_heap_table_size=1
#

--disable_warnings
drop table if exists t1, t2;
--enable_warnings

--echo #
--echo # Bug #36676: multiupdate using LEFT JOIN updates only
--echo #             first row or fails with an error:
--echo #  ERROR 1022 (23000): Can't write; duplicate key in table ''
--echo #

--echo

--echo #
--echo # Multiupdate creates MyISAM temporary table without MEMORY table
--echo #

CREATE TABLE t1 (ID INT);
CREATE TABLE t2 (ID INT,
  s1 TEXT, s2 TEXT, s3 VARCHAR(10), s4 TEXT, s5 VARCHAR(10));

INSERT INTO t1 VALUES (1),(2);
INSERT INTO t2 VALUES (1,'test', 'test', 'test', 'test', 'test'),
                      (2,'test', 'test', 'test', 'test', 'test');

SELECT * FROM t1 LEFT JOIN t2 USING(ID);
UPDATE t1 LEFT JOIN t2 USING(ID) SET s1 = 'changed';
UPDATE t1 JOIN t2 USING(ID) SET s2 = 'changed';
UPDATE t1 LEFT JOIN t2 USING(ID) SET s3 = 'changed';
UPDATE t1 LEFT JOIN t2 USING(ID) SET s4 = 'changed', s5 = 'changed';
SELECT * FROM t1 LEFT JOIN t2 USING(ID); 

DROP TABLE t1, t2;

--echo #
--echo # Multiupdate creates temporary MyISAM table from MEMORY table
--echo #

CREATE TABLE t1 (id INT NOT NULL AUTO_INCREMENT PRIMARY KEY);
CREATE TABLE t2 (id INT, s1 CHAR(255));

# insert [1..64] into table `t1`
INSERT INTO t1 VALUES (0), (0), (0), (0), (0), (0), (0), (0);
INSERT INTO t1 (SELECT 0 FROM t1);
INSERT INTO t1 (SELECT 0 FROM t1);
INSERT INTO t1 (SELECT 0 FROM t1);

INSERT INTO t2 (SELECT ID, 'a' FROM t1);

UPDATE t1 LEFT JOIN t2 USING(id) SET s1 = 'b';

SELECT DISTINCT s1 FROM t1 LEFT JOIN t2 USING(id);

DROP TABLE t1, t2;


--echo # End of 5.0 tests

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