polardbxengine/mysql-test/suite/query_rewrite_plugins/t/new_rule.test

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--echo #
--echo # Inserts some rules, tests them and then inserts another one.
--echo #
--source suite/query_rewrite_plugins/include/have_plugin_rewriter.inc
use test;
CREATE TABLE t1 ( c1 VARCHAR(10), c2 VARCHAR(10) );
INSERT INTO t1 VALUES ( 'abc', 'def' ),
( 'ghi', 'klm' ),
( 'nop', 'qrs' );
CREATE TABLE t2 ( c1 VARCHAR(10) );
INSERT INTO t2 VALUES ( 'abc' ),
( 'klm' );
--source suite/query_rewrite_plugins/include/install_rewriter_with_optional_columns.inc
INSERT INTO query_rewrite.rewrite_rules ( pattern, replacement )
VALUES ( 'SELECT * FROM test.t1 WHERE ( c1 = ? AND TRUE ) OR c2 = ?',
'SELECT c1 FROM test.t1 WHERE c1 = ?' ),
( 'SELECT * FROM test.t2',
'SELECT * FROM test.t1 JOIN test.t2 ON test.t1.c1 = t2.c1' );
CALL query_rewrite.flush_rewrite_rules();
SHOW STATUS LIKE 'Rewriter_number_loaded_rules';
SHOW STATUS LIKE 'Rewriter_number_reloads';
# checks a query without rewrite
SELECT c2 FROM test.t1;
--echo # Check that a rewrite works.
SELECT * FROM test.t2;
INSERT INTO query_rewrite.rewrite_rules ( pattern, replacement )
VALUES ( 'SELECT c2 FROM test.t1', 'SELECT * FROM test.t1' );
CALL query_rewrite.flush_rewrite_rules();
SHOW STATUS LIKE 'Rewriter_number_loaded_rules';
SHOW STATUS LIKE 'Rewriter_number_reloads';
SET @@global.rewriter_verbose = 2;
--echo # Check that the new rule works.
SELECT c2 FROM test.t1;
--echo # Check that the old rewrites still work.
SELECT * FROM test.t2;
DROP TABLE t1, t2;
--source suite/query_rewrite_plugins/include/uninstall_rewriter.inc