262 lines
7.7 KiB
Plaintext
262 lines
7.7 KiB
Plaintext
#
|
|
# Test of query rewrites and query cache.
|
|
#
|
|
SET sql_mode = 'PIPES_AS_CONCAT';
|
|
Warnings:
|
|
Warning 3090 Changing sql mode 'NO_AUTO_CREATE_USER' is deprecated. It will be removed in a future release.
|
|
SHOW VARIABLES LIKE '%query_cache%';
|
|
Variable_name Value
|
|
have_query_cache YES
|
|
query_cache_limit 1048576
|
|
query_cache_min_res_unit 4096
|
|
query_cache_size 1048576
|
|
query_cache_type ON
|
|
query_cache_wlock_invalidate OFF
|
|
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;
|
|
a
|
|
1
|
|
2
|
|
3
|
|
SELECT * FROM t1;
|
|
a
|
|
1
|
|
2
|
|
3
|
|
SHOW STATUS LIKE "Qcache_queries_in_cache";
|
|
Variable_name Value
|
|
Qcache_queries_in_cache 1
|
|
SHOW STATUS LIKE "Qcache_inserts";
|
|
Variable_name Value
|
|
Qcache_inserts 1
|
|
SHOW STATUS LIKE "Qcache_hits";
|
|
Variable_name Value
|
|
Qcache_hits 1
|
|
# Let's get this query cached, to make sure the cache is flushed when we
|
|
# load the rule below.
|
|
SELECT * FROM test.t1;
|
|
a
|
|
1
|
|
2
|
|
3
|
|
SHOW STATUS LIKE "Qcache_queries_in_cache";
|
|
Variable_name Value
|
|
Qcache_queries_in_cache 2
|
|
FLUSH STATUS;
|
|
Warnings:
|
|
Warning 1681 'RESET QUERY CACHE' is deprecated and will be removed in a future release.
|
|
Warnings:
|
|
Warning 1681 'RESET QUERY CACHE' is deprecated and will be removed in a future release.
|
|
# Query rewrite plugin was installed.
|
|
INSERT INTO query_rewrite.rewrite_rules( pattern, replacement )
|
|
VALUES( 'SELECT * FROM test.t1', 'SELECT * FROM test.t2' );
|
|
CALL query_rewrite.flush_rewrite_rules();
|
|
Warnings:
|
|
Warning 1681 'RESET QUERY CACHE' is deprecated and will be removed in a future release.
|
|
SELECT @@query_cache_size;
|
|
@@query_cache_size
|
|
1048576
|
|
Warnings:
|
|
Warning 1287 '@@query_cache_size' is deprecated and will be removed in a future release.
|
|
# No matter what we do, this query should not get cached.
|
|
SELECT * FROM test.t1;
|
|
a
|
|
a
|
|
b
|
|
c
|
|
Warnings:
|
|
Note 1105 Query 'SELECT * FROM test.t1' rewritten to 'SELECT * FROM test.t2' by a query rewrite plugin
|
|
SELECT * FROM test.t1;
|
|
a
|
|
a
|
|
b
|
|
c
|
|
Warnings:
|
|
Note 1105 Query 'SELECT * FROM test.t1' rewritten to 'SELECT * FROM test.t2' by a query rewrite plugin
|
|
SHOW STATUS LIKE "Qcache_queries_in_cache";
|
|
Variable_name Value
|
|
Qcache_queries_in_cache 0
|
|
SHOW STATUS LIKE "Qcache_inserts";
|
|
Variable_name Value
|
|
Qcache_inserts 0
|
|
SHOW STATUS LIKE "Qcache_hits";
|
|
Variable_name Value
|
|
Qcache_hits 0
|
|
DELETE FROM query_rewrite.rewrite_rules;
|
|
CALL query_rewrite.flush_rewrite_rules();
|
|
FLUSH STATUS;
|
|
SELECT * FROM test.t1;
|
|
a
|
|
1
|
|
2
|
|
3
|
|
SELECT * FROM test.t1;
|
|
a
|
|
1
|
|
2
|
|
3
|
|
SHOW STATUS LIKE "Qcache_queries_in_cache";
|
|
Variable_name Value
|
|
Qcache_queries_in_cache 1
|
|
SHOW STATUS LIKE "Qcache_inserts";
|
|
Variable_name Value
|
|
Qcache_inserts 1
|
|
SHOW STATUS LIKE "Qcache_hits";
|
|
Variable_name Value
|
|
Qcache_hits 1
|
|
# Now let's define a syntactically correct rule followed by one with a
|
|
# syntax error. The query cache should still be cleared even if
|
|
# flush_rewrite_rules() exits with an error.
|
|
RESET QUERY CACHE;
|
|
Warnings:
|
|
Warning 1681 'RESET QUERY CACHE' is deprecated and will be removed in a future release.
|
|
DELETE FROM query_rewrite.rewrite_rules;
|
|
SELECT @@query_cache_size;
|
|
@@query_cache_size
|
|
1048576
|
|
Warnings:
|
|
Warning 1287 '@@query_cache_size' is deprecated and will be removed in a future release.
|
|
SELECT * FROM test.t1;
|
|
a
|
|
1
|
|
2
|
|
3
|
|
SELECT * FROM test.t1;
|
|
a
|
|
1
|
|
2
|
|
3
|
|
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' );
|
|
CALL query_rewrite.flush_rewrite_rules();
|
|
ERROR 45000: Loading of some rule(s) failed.
|
|
SELECT * FROM query_rewrite.rewrite_rules;
|
|
id pattern pattern_database replacement enabled message
|
|
2 SELECT * FROM test.t1 NULL SELECT "rewritten" YES NULL
|
|
3 This rule has syntax error NULL so it never gets rewritten YES Parse error in pattern: >>You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'This rule has syntax error' at line 1<<
|
|
FLUSH STATUS;
|
|
# The query matching the rule should be evicted from the cache.
|
|
SHOW STATUS LIKE "Qcache_queries_in_cache";
|
|
Variable_name Value
|
|
Qcache_queries_in_cache 1
|
|
SHOW STATUS LIKE "Qcache_inserts";
|
|
Variable_name Value
|
|
Qcache_inserts 0
|
|
SHOW STATUS LIKE "Qcache_hits";
|
|
Variable_name Value
|
|
Qcache_hits 0
|
|
# The query would not get rewritten if it were still cached.
|
|
SELECT * FROM test.t1;
|
|
rewritten
|
|
rewritten
|
|
Warnings:
|
|
Note 1105 Query 'SELECT * FROM test.t1' rewritten to 'SELECT "rewritten"' by a query rewrite plugin
|
|
DELETE FROM query_rewrite.rewrite_rules;
|
|
Warnings:
|
|
Warning 1620 Plugin is busy and will be uninstalled on shutdown
|
|
# Query rewrite plugin was queued for uninstalling.
|
|
SELECT * FROM test.t1;
|
|
a
|
|
1
|
|
2
|
|
3
|
|
SELECT * FROM test.t1;
|
|
a
|
|
1
|
|
2
|
|
3
|
|
SHOW STATUS LIKE "Qcache_queries_in_cache";
|
|
Variable_name Value
|
|
Qcache_queries_in_cache 1
|
|
SHOW STATUS LIKE "Qcache_inserts";
|
|
Variable_name Value
|
|
Qcache_inserts 1
|
|
SHOW STATUS LIKE "Qcache_hits";
|
|
Variable_name Value
|
|
Qcache_hits 1
|
|
DROP TABLE t1, t2;
|
|
SET GLOBAL query_cache_size = DEFAULT;
|
|
Warnings:
|
|
Warning 1287 '@@query_cache_size' is deprecated and will be removed in a future release.
|
|
#
|
|
# Reinstalls the plugin while keeping the rules table.
|
|
#
|
|
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' );
|
|
Warnings:
|
|
Warning 1681 'RESET QUERY CACHE' is deprecated and will be removed in a future release.
|
|
Warnings:
|
|
Warning 1681 'RESET QUERY CACHE' is deprecated and will be removed in a future release.
|
|
# Query rewrite plugin was installed.
|
|
# Insert some rewrite rules in the plugin
|
|
INSERT INTO query_rewrite.rewrite_rules ( pattern, replacement )
|
|
VALUES ( 'SELECT * FROM test.t2',
|
|
'SELECT * FROM test.t1 JOIN test.t2 ON test.t1.c1 = test.t2.c1' );
|
|
CALL query_rewrite.flush_rewrite_rules();
|
|
Warnings:
|
|
Warning 1681 'RESET QUERY CACHE' is deprecated and will be removed in a future release.
|
|
# Check a query that doesn't have a rewrite rule doesn't get rewritten.
|
|
SELECT c2 FROM test.t1;
|
|
c2
|
|
def
|
|
klm
|
|
qrs
|
|
# Check that we can execute a rewrite rule.
|
|
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 = test.t2.c1' by a query rewrite plugin
|
|
DROP PROCEDURE query_rewrite.flush_rewrite_rules;
|
|
DROP FUNCTION load_rewrite_rules;
|
|
UNINSTALL PLUGIN rewriter;
|
|
Warnings:
|
|
Warning 1620 Plugin is busy and will be uninstalled on shutdown
|
|
# Check that the table is still present and didn't get dropped.
|
|
SELECT pattern, replacement FROM query_rewrite.rewrite_rules;
|
|
pattern replacement
|
|
SELECT * FROM test.t2 SELECT * FROM test.t1 JOIN test.t2 ON test.t1.c1 = test.t2.c1
|
|
# Check that when the plugin is inactive the queries don't get rewritten.
|
|
SELECT * FROM test.t2;
|
|
c1
|
|
abc
|
|
klm
|
|
# Reinstall the plugin. All the rules should still be here from the
|
|
# previous installation.
|
|
Warnings:
|
|
Note 1007 Can't create database 'query_rewrite'; database exists
|
|
Warnings:
|
|
Note 1050 Table 'rewrite_rules' already exists
|
|
Warnings:
|
|
Warning 1681 'RESET QUERY CACHE' is deprecated and will be removed in a future release.
|
|
Warnings:
|
|
Warning 1681 'RESET QUERY CACHE' is deprecated and will be removed in a future release.
|
|
# Query rewrite plugin was installed.
|
|
# Check that a query that doesn't have a rewrite rule doesn't get
|
|
# rewritten.
|
|
SELECT c2 FROM test.t1;
|
|
c2
|
|
def
|
|
klm
|
|
qrs
|
|
# Check that we can still execute a rewrite rule.
|
|
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 = test.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.
|
|
SET sql_mode = DEFAULT;
|