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# The include statement below is a temp one for tests that are yet to #be ported to run with InnoDB, #but needs to be kept for tests that would need MyISAM in future. --source include/force_myisam_default.inc --source include/big_test.inc # As per discussion with Olav, skipping this test from valgrind runs --source include/not_valgrind.inc --echo # --echo # Bug 12365385 STRAIGHT_JOIN QUERY QUICKLY EXHAUSTS SYSTEM+VIRT. --echo # MEMORY LEADING TO SYSTEM CRASH --echo # # This test will cause the server to allocate many GBs of memory and most # likely run out of memory if this bug gets re-introduced. # A reduced version of this test is include in include/mrr_tests.inc CREATE TABLE ten (a INTEGER); INSERT INTO ten VALUES (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); CREATE TABLE hundred (a INTEGER); INSERT INTO hundred SELECT a1.a + 10 * a2.a FROM ten a1, ten a2; CREATE TABLE thousand (a INTEGER); INSERT INTO thousand SELECT a1.a + 10 * a2.a + 100 * a3.a FROM ten a1, ten a2, ten a3; CREATE TABLE t1 ( pk INTEGER NOT NULL, i1 INTEGER NOT NULL, c1 VARCHAR(10) NOT NULL, PRIMARY KEY (pk) ); INSERT INTO t1 SELECT a, 1, 'MySQL' FROM thousand; CREATE TABLE t2 ( pk INTEGER NOT NULL, c1 VARCHAR(10) NOT NULL, c2 varchar(10) NOT NULL, PRIMARY KEY (pk) ); INSERT INTO t2 SELECT a, 'MySQL', 'MySQL' FROM ten; CREATE TABLE t3 ( pk INTEGER NOT NULL, c1 VARCHAR(10) NOT NULL, PRIMARY KEY (pk) ); INSERT INTO t3 SELECT a, 'MySQL' FROM hundred; CREATE TABLE t4 ( pk int(11) NOT NULL, c1_key varchar(10) CHARACTER SET utf8 NOT NULL, c2 varchar(10) NOT NULL, c3 varchar(10) NOT NULL, PRIMARY KEY (pk), KEY k1 (c1_key) ); # t4 is empty CREATE TABLE t5 ( pk INTEGER NOT NULL, c1 VARCHAR(10) NOT NULL, PRIMARY KEY (pk) ); INSERT INTO t5 SELECT a, 'MySQL' FROM ten; set optimizer_switch=`mrr=on,mrr_cost_based=off`; #set optimizer_switch='mrr=off'; let query= SELECT STRAIGHT_JOIN * FROM (t1 LEFT JOIN (t2 LEFT JOIN (t3 LEFT OUTER JOIN t4 ON t3.c1 <= t4.c1_key) ON t2.c1 = t4.c3) ON t1.c1 = t4.c2) RIGHT OUTER JOIN t5 ON t2.c2 <= t5.c1 WHERE t1.i1 = 1; eval EXPLAIN $query; eval $query; DROP TABLE ten, hundred, thousand; DROP TABLE t1, t2, t3, t4, t5;