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#
# Inserts some rules, tests them and then inserts another one.
#
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' );
# Query rewrite plugin was installed.
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';
Variable_name Value
Rewriter_number_loaded_rules 2
SHOW STATUS LIKE 'Rewriter_number_reloads';
Variable_name Value
Rewriter_number_reloads 2
SELECT c2 FROM test.t1;
c2
def
klm
qrs
# Check that a rewrite works.
SELECT * FROM test.t2;
c1 c2 c1
abc def abc
Warnings:
Note 1105 Query 'SELECT * FROM test.t2' rewritten to 'SELECT * FROM test.t1 JOIN test.t2 ON test.t1.c1 = t2.c1' by a query rewrite plugin
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';
Variable_name Value
Rewriter_number_loaded_rules 3
SHOW STATUS LIKE 'Rewriter_number_reloads';
Variable_name Value
Rewriter_number_reloads 3
SET @@global.rewriter_verbose = 2;
# Check that the new rule works.
SELECT c2 FROM test.t1;
c1 c2
abc def
ghi klm
nop qrs
Warnings:
Note 1105 Query 'SELECT c2 FROM test.t1' rewritten to 'SELECT * FROM test.t1' by a query rewrite plugin
# Check that the old rewrites still work.
SELECT * FROM test.t2;
c1 c2 c1
abc def abc
Warnings:
Note 1105 Query 'SELECT * FROM test.t2' rewritten to 'SELECT * FROM test.t1 JOIN test.t2 ON test.t1.c1 = t2.c1' by a query rewrite plugin
DROP TABLE t1, t2;
Warnings:
Warning 1620 Plugin is busy and will be uninstalled on shutdown
# Query rewrite plugin was queued for uninstalling.
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