75 lines
2.1 KiB
Plaintext
75 lines
2.1 KiB
Plaintext
--echo # WL#8017 Infrastructure for Optimizer Hints
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--echo # MAX_EXECUTION_TIME hint testing
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--source include/have_statement_timeout.inc
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--echo # MAX_EXECUTION_TIME hint testing
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CREATE TABLE t1 (a INT, b VARCHAR(300));
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INSERT INTO t1 VALUES (1, 'string');
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INSERT INTO t1 SELECT * FROM t1;
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INSERT INTO t1 SELECT * FROM t1;
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INSERT INTO t1 SELECT * FROM t1;
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INSERT INTO t1 SELECT * FROM t1;
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INSERT INTO t1 SELECT * FROM t1;
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INSERT INTO t1 SELECT * FROM t1;
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INSERT INTO t1 SELECT * FROM t1;
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INSERT INTO t1 SELECT * FROM t1;
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INSERT INTO t1 SELECT * FROM t1;
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INSERT INTO t1 SELECT * FROM t1;
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INSERT INTO t1 SELECT * FROM t1;
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-- disable_query_log
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-- disable_result_log
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analyze table t1;
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-- enable_result_log
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-- enable_query_log
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--error ER_QUERY_TIMEOUT
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SELECT /*+ MAX_EXECUTION_TIME(1) */ * FROM t1 a, t1 b;
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EXPLAIN SELECT /*+ MAX_EXECUTION_TIME(10) MAX_EXECUTION_TIME(100) */ * FROM t1;
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DROP TABLE t1;
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--echo
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--echo # test the MAX_EXECUTION_TIME hint for SELECT statements:
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--echo
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CREATE TABLE t1 (i INT, j INT);
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CREATE INDEX i1 ON t1(i);
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CREATE INDEX i2 ON t1(j);
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INSERT INTO t1 VALUES (1, 1), (2, 2);
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SELECT /*+ MAX_EXECUTION_TIME(4294967296) */ 1 FROM t1;
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--error ER_QUERY_TIMEOUT
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SELECT /*+ MAX_EXECUTION_TIME(1) */ *, SLEEP(1000) FROM t1;
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--error ER_QUERY_TIMEOUT
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SELECT /*+ MAX_EXECUTION_TIME(1) */ *, SLEEP(1000) FROM t1 UNION SELECT 1, 2, 3;
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--error ER_QUERY_TIMEOUT
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(SELECT /*+ MAX_EXECUTION_TIME(1) */ *, SLEEP(1000) FROM t1) UNION (SELECT 1, 2, 3);
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--error ER_QUERY_TIMEOUT
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((SELECT /*+ MAX_EXECUTION_TIME(1) */ *, SLEEP(1000) FROM t1));
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--echo
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--echo # only SELECT statements supports the MAX_EXECUTION_TIME hint (warning):
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--echo
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CREATE TABLE t2 (i INT);
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INSERT /*+ MAX_EXECUTION_TIME(1) */ INTO t2 SELECT 1;
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REPLACE /*+ MAX_EXECUTION_TIME(1) */ INTO t2 SELECT 1;
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UPDATE /*+ MAX_EXECUTION_TIME(1) */ t2 SET i = 1;
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DELETE /*+ MAX_EXECUTION_TIME(1) */ FROM t2 WHERE i = 1;
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DROP TABLE t1, t2;
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SELECT 1 FROM (SELECT /*+ MAX_EXECUTION_TIME(10) */ 1) a;
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DELIMITER |;
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CREATE FUNCTION f1() RETURNS INT BEGIN SELECT /*+ MAX_EXECUTION_TIME(10) */ 1
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INTO @a; RETURN 1; END|
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DELIMITER ;|
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DROP FUNCTION f1;
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