config root man

--echo #
--echo # Test of query rewrites and query cache.
--echo #

SET sql_mode = 'PIPES_AS_CONCAT';

SHOW VARIABLES LIKE '%query_cache%';

--source suite/query_rewrite_plugins/include/have_plugin_rewriter.inc
--source include/have_query_cache.inc

FLUSH STATUS;

CREATE TABLE t1 ( a INT );
INSERT INTO t1 VALUES (1), (2), (3);
CREATE TABLE t2 ( a CHAR );
INSERT INTO t2 VALUES ('a'), ('b'), ('c');
SELECT * FROM t1;
SELECT * FROM t1;
SHOW STATUS LIKE "Qcache_queries_in_cache";
SHOW STATUS LIKE "Qcache_inserts";
SHOW STATUS LIKE "Qcache_hits";

--echo # Let's get this query cached, to make sure the cache is flushed when we
--echo # load the rule below.
SELECT * FROM test.t1;

SHOW STATUS LIKE "Qcache_queries_in_cache";

FLUSH STATUS;

--source suite/query_rewrite_plugins/include/install_rewriter.inc
INSERT INTO query_rewrite.rewrite_rules( pattern, replacement )
VALUES( 'SELECT * FROM test.t1', 'SELECT * FROM test.t2' );

CALL query_rewrite.flush_rewrite_rules();

SELECT @@query_cache_size;

--echo # No matter what we do, this query should not get cached.
SELECT * FROM test.t1;
SELECT * FROM test.t1;

SHOW STATUS LIKE "Qcache_queries_in_cache";
SHOW STATUS LIKE "Qcache_inserts";
SHOW STATUS LIKE "Qcache_hits";

DELETE FROM query_rewrite.rewrite_rules;
CALL query_rewrite.flush_rewrite_rules();
FLUSH STATUS;

SELECT * FROM test.t1;
SELECT * FROM test.t1;

SHOW STATUS LIKE "Qcache_queries_in_cache";
SHOW STATUS LIKE "Qcache_inserts";
SHOW STATUS LIKE "Qcache_hits";

--echo # Now let's define a syntactically correct rule followed by one with a
--echo # syntax error. The query cache should still be cleared even if
--echo # flush_rewrite_rules() exits with an error.
RESET QUERY CACHE;
DELETE FROM query_rewrite.rewrite_rules;

SELECT @@query_cache_size;

SELECT * FROM test.t1;
SELECT * FROM test.t1;

CALL mtr.add_suppression("Plugin rewriter reported: " ||
                         "'Some rules failed to load.'");

INSERT INTO query_rewrite.rewrite_rules( pattern, replacement )
VALUES ( 'SELECT * FROM test.t1', 'SELECT "rewritten"' ),
       ( 'This rule has syntax error', 'so it never gets rewritten' );


--error ER_SIGNAL_EXCEPTION
CALL query_rewrite.flush_rewrite_rules();

SELECT * FROM query_rewrite.rewrite_rules;

FLUSH STATUS;

--echo # The query matching the rule should be evicted from the cache.
SHOW STATUS LIKE "Qcache_queries_in_cache";
SHOW STATUS LIKE "Qcache_inserts";
SHOW STATUS LIKE "Qcache_hits";

--echo # The query would not get rewritten if it were still cached.
SELECT * FROM test.t1;

DELETE FROM query_rewrite.rewrite_rules;

--source suite/query_rewrite_plugins/include/uninstall_rewriter.inc
--source include/disconnect_connections.inc

SELECT * FROM test.t1;
SELECT * FROM test.t1;
SHOW STATUS LIKE "Qcache_queries_in_cache";
SHOW STATUS LIKE "Qcache_inserts";
SHOW STATUS LIKE "Qcache_hits";

DROP TABLE t1, t2;

SET GLOBAL query_cache_size = DEFAULT;

--source suite/query_rewrite_plugins/include/reload.inc

SET sql_mode = DEFAULT;