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CREATE TABLE t1 ( a VARCHAR(10), b VARCHAR(10) );
INSERT INTO t1 VALUES ( 'abc', 'def' ), ( 'ghi', 'klm' ), ( 'nop', 'qrs' );
CREATE TABLE t2 ( a VARCHAR(10) );
INSERT INTO t2 VALUES ( 'abc' ), ( 'klm' );
--echo # Test of literals matching.
INSERT INTO query_rewrite.rewrite_rules ( pattern, replacement )
VALUES ( 'SELECT ?', 'SELECT "literal"' );
SELECT * FROM query_rewrite.rewrite_rules;
CALL query_rewrite.flush_rewrite_rules();
SELECT * FROM query_rewrite.rewrite_rules;
SELECT NULL;
SELECT 'abc';
SELECT 1;
SELECT 1.1;
SELECT 123456789123456789123456789123456789123456789123456789;
--echo # Check our status variables.
SHOW STATUS LIKE 'Rewriter%';
DELETE FROM query_rewrite.rewrite_rules;
INSERT INTO query_rewrite.rewrite_rules ( pattern, replacement )
VALUES ( 'SELECT * FROM test.t1 WHERE ( a = ? AND TRUE ) OR b = ?',
'SELECT a FROM test.t1 WHERE a = ?' ),
( 'SELECT a FROM test.t1',
'SELECT * FROM test.t1 WHERE a = \'abc\'' ),
( 'SELECT a FROM test.t1 WHERE b = ?',
'SELECT * FROM test.t1 WHERE b = ?' ),
( 'SELECT * FROM test.t2',
'SELECT * FROM test.t1 JOIN test.t2 ON t1.a = t2.a' ),
( 'SELECT * FROM test.t1 WHERE a = ? OR b = ?',
'SELECT * FROM test.t1 WHERE b = ? OR a = ?' );
SELECT * FROM query_rewrite.rewrite_rules;
CALL query_rewrite.flush_rewrite_rules();
SELECT * FROM query_rewrite.rewrite_rules;
--echo # Check a query that doesn't have a rewrite rule doesn't get rewritten.
SELECT b FROM test.t1;
--echo # Check a query with just one parameter.
SELECT a FROM test.t1 WHERE b = 'qrs';
--echo # Check a rule with parameter truncation (fewer parameters in the
--echo # output query than in the input query);
SELECT * FROM test.t1 WHERE ( a = 'abc' AND TRUE ) OR b = 'klm';
SELECT * FROM test.t1 WHERE ( a = 'abc' AND FALSE ) OR b = 'klm';
--echo # Check a non parameterized query.
SELECT * from t1 WHERE a = 'abc';
--echo # Check that a non-rewritten query does not yield a warning.
SELECT b FROM test.t1;
--echo # Check that a query is not rewritten if the query corresponds to a
--echo # replacement.
SELECT a FROM test.t1;
--echo # Check that we can execute a rewrite more than once.
SELECT * FROM test.t2;
SELECT * FROM test.t2;
--echo # Remove the warnings.
SELECT b FROM test.t1;
--echo # Check parameter switching in a query rewrite
SELECT * FROM test.t1 WHERE a = 'def' OR b = 'ghi';
--echo # Verify with whitespace.
SELECT * FROM test.t1 WHERE a = 'def' OR b = 'ghi';
--echo # Verify with comments.
SELECT * FROM test.t1 WHERE a =/* 'def' ? */'def' OR b = 'ghi';
--echo # Check our status variables.
SHOW STATUS LIKE 'Rewriter%';
DROP TABLE t1;
DROP TABLE t2;
DELETE FROM query_rewrite.rewrite_rules;
--echo # Test of literals matching.
INSERT INTO query_rewrite.rewrite_rules ( pattern, replacement )
VALUES ( 'SELECT 1, ?', 'SELECT "rewritten w/rule 1"' ),
( 'SELECT 2, ?', 'SELECT "rewritten w/rule 2"' ),
( 'SELECT "The_original_query"', 'SELECT "The_rewritten_query"');
SELECT * FROM query_rewrite.rewrite_rules;
CALL query_rewrite.flush_rewrite_rules();
SELECT * FROM query_rewrite.rewrite_rules;
SELECT 1, 1;
SELECT 1, 2;
SELECT 2, 1;
SELECT 2, 2;
SELECT 3, 1;
SELECT 3, 2;
SELECT 'The_original_query';
DELETE FROM query_rewrite.rewrite_rules;