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19e832dc85
1. Disable opt_hint_timeout.test for embedded server. Make sure the test does not crash even when started for embedded server. Disable view-protocol since hints are not supported inside views. 2. Hints are designed to behave like regular /* ... */ comments: `SELECT /*+ " */ 1;` -- a valid SQL query However, the mysql client program waits for the closing doublequote character. Another problem is observed when there is no space character between closing `*/` of the hint and the following `*`: `SELECT /*+ some_hints(...) */* FROM t1;` In this case the client treats `/*` as a comment section opening and waits for the closing `*/` sequence. This commit fixes all of these issues
113 lines
3.6 KiB
Text
113 lines
3.6 KiB
Text
# Setting statement time-outs is not possible for the embedded server neither
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# by SET STATEMENT max_statement_time=X nor by /*+ MAX_EXECUTION_TIME(X)*/ hint.
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# That is why this test is disabled for the embedded server
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--source include/not_embedded.inc
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--disable_view_protocol # Since optimizer hints are not supported inside views
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--source include/have_sequence.inc
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--echo #
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--echo # MAX_EXECUTION_TIME hint testing
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--echo #
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--enable_prepare_warnings
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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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-- 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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--echo # Correct hint usage
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--error ER_STATEMENT_TIMEOUT
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SELECT /*+ MAX_EXECUTION_TIME(10) */* FROM t1 a, t1 b;
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EXPLAIN EXTENDED SELECT /*+ MAX_EXECUTION_TIME(000149) */* FROM t1;
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--error ER_STATEMENT_TIMEOUT
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SELECT /*+ MAX_EXECUTION_TIME(20) */ *, SLEEP(1) FROM t1 UNION SELECT 1, 2, 3;
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--error ER_STATEMENT_TIMEOUT
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(SELECT /*+ MAX_EXECUTION_TIME(30) */ *, SLEEP(1) FROM t1) UNION (SELECT 1, 2, 3);
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--error ER_STATEMENT_TIMEOUT
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((SELECT /*+ MAX_EXECUTION_TIME(50) */ *, SLEEP(1) FROM t1));
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--echo # Make sure the hint overrides global/session/statement settings.
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--echo # Global setting 30 seconds, won't be exceeded for sure
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SET @@max_statement_time = 30;
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--error ER_STATEMENT_TIMEOUT
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SELECT /*+ MAX_EXECUTION_TIME(10) */* FROM t1 a, t1 b;
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--echo # Session setting 10 seconds, too long to be exceeded
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SET SESSION max_statement_time = 10;
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--error ER_STATEMENT_TIMEOUT
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SELECT /*+ MAX_EXECUTION_TIME(15) */* FROM t1 a, t1 b;
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--error ER_STATEMENT_TIMEOUT
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SET STATEMENT max_statement_time = 20 FOR
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SELECT /*+ MAX_EXECUTION_TIME(5) */* FROM t1 a, t1 b;
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--echo # Check that prepared statements process the hint correctly
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PREPARE s FROM 'SELECT /*+ MAX_EXECUTION_TIME(20) */ seq, SLEEP(1) FROM seq_1_to_10';
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--error ER_STATEMENT_TIMEOUT
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EXECUTE s;
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--error ER_STATEMENT_TIMEOUT
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EXECUTE s;
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--echo # Hint duplication
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SELECT /*+ MAX_EXECUTION_TIME(10) MAX_EXECUTION_TIME(100) */ count(*) FROM t1;
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--echo # Wrong values
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SELECT /*+ MAX_EXECUTION_TIME(0) */ count(*) FROM t1;
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SELECT /*+ MAX_EXECUTION_TIME(-1) */ count(*) FROM t1;
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SELECT /*+ MAX_EXECUTION_TIME(4294967296) */ count(*) 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(10) */ INTO t2 SELECT 1;
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REPLACE /*+ MAX_EXECUTION_TIME(15) */ INTO t2 SELECT 1;
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UPDATE /*+ MAX_EXECUTION_TIME(23) */ t2 SET i = 1;
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DELETE /*+ MAX_EXECUTION_TIME(5000) */ FROM t2 WHERE i = 1;
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--echo # Not supported inside stored procedures/functions
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DELIMITER |;
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CREATE PROCEDURE p1() BEGIN SELECT /*+ MAX_EXECUTION_TIME(10) */ count(*) FROM t1 a, t1 b
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INTO @a; END|
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DELIMITER ;|
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CALL p1();
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DROP PROCEDURE p1;
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--echo # Hint in a subquery is not allowed (warning):
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SELECT 1 FROM (SELECT /*+ MAX_EXECUTION_TIME(10) */ 1) a;
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--echo # Hint is allowed only for the first select of UNION (warning):
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SELECT /*+ MAX_EXECUTION_TIME(20) */ count(*) FROM t1
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UNION
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SELECT /*+ MAX_EXECUTION_TIME(30) */ count(*) FROM t1;
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SELECT count(*) FROM t1
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UNION
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SELECT /*+ MAX_EXECUTION_TIME(30) */ count(*) FROM t1;
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--echo # Check that hint actually works:
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--error ER_STATEMENT_TIMEOUT
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SELECT /*+ MAX_EXECUTION_TIME(20) */ count(*), SLEEP(1) FROM t1
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UNION
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SELECT count(*), SLEEP(1) FROM t1;
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DROP TABLE t1, t2;
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