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--source include/long_test.inc
--source include/have_sequence.inc
#
# Test of update statement that uses many tables.
#
#
# If we are running with
# - Valgrind -> $VALGRIND_TEST <> 0
# - debug tracing -> @@session.debug_dbug LIKE '%trace%'
# the resource consumption (storage space needed, runtime) will be extreme.
# Therefore we require that the option "--big-test" is also set.
#
let $need_big= 0;
--disable_query_log
--error 0,ER_UNKNOWN_SYSTEM_VARIABLE
SET @aux = @@session.debug_dbug;
if (!$mysql_errno)
{
# We have returncode 0 = the server system variable @@session.debug_dbug exists.
# But we only need "--big-test" in case of tracing.
if (`SELECT @@session.debug_dbug LIKE '%trace%'`)
{
let $need_big= 1;
}
}
--enable_query_log
if ($VALGRIND_TEST)
{
# We are running with Valgrind
inc $need_big;
}
if (`SELECT '$BIG_TEST' = '' AND $need_big = 1`)
{
--skip Need "--big-test" when running with the option "--debug" or "--valgrind"
}
#
# Bug#1820 Rows not deleted from second table on multi-table delete
#
CREATE TABLE t1 ( a INT NOT NULL, b INT NOT NULL) ;
INSERT INTO t1 SELECT seq,seq FROM seq_1_to_2097152;
ALTER TABLE t1 ADD INDEX i1(a);
DELETE FROM t1 WHERE a > 2000000;
CREATE TABLE t2 LIKE t1;
INSERT INTO t2 SELECT * FROM t1;
SELECT 't2 rows before small delete', COUNT(*) FROM t1;
DELETE t1,t2 FROM t1,t2 WHERE t1.b=t2.a AND t1.a < 2;
SELECT 't2 rows after small delete', COUNT(*) FROM t2;
SELECT 't1 rows after small delete', COUNT(*) FROM t1;
## Try deleting many rows
DELETE t1,t2 FROM t1,t2 WHERE t1.b=t2.a AND t1.a < 100*1000;
SELECT 't2 rows after big delete', COUNT(*) FROM t2;
SELECT 't1 rows after big delete', COUNT(*) FROM t1;
DROP TABLE t1,t2;
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