config root man

--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