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locking_clause.result
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locking_clause.result
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CREATE TABLE t1 ( a INT, b INT );
INSERT INTO t1 VALUES (1, 1);
CREATE VIEW v1 AS SELECT * FROM t1;
CREATE TABLE t2 ( a INT );
INSERT INTO t2 VALUES (1);
#
# The new non-standard keywords should still be useable as identifiers.
# The standard ones should not.
#
CREATE TABLE t ( of INT );
CREATE TABLE t0 ( skip INT, locked INT, nowait INT );
DROP TABLE t, t0;
CREATE PROCEDURE p0() BEGIN of: LOOP LEAVE of; END LOOP of; END|
CREATE PROCEDURE p1() BEGIN skip: LOOP LEAVE skip; END LOOP skip; END|
CREATE PROCEDURE p2() BEGIN locked: LOOP LEAVE locked; END LOOP locked; END|
CREATE PROCEDURE p3() BEGIN nowait: LOOP LEAVE nowait; END LOOP nowait; END|
DROP PROCEDURE p0;
DROP PROCEDURE p1;
DROP PROCEDURE p2;
DROP PROCEDURE p3;
#
# Test of the syntax.
#
#
# UPDATE ...
#
SELECT * FROM t1 FOR UPDATE;
a b
1 1
SELECT * FROM t1 FOR UPDATE NOWAIT;
a b
1 1
SELECT * FROM t1 FOR UPDATE SKIP LOCKED;
a b
1 1
#
# Dual locking clauses
#
SELECT * FROM t1 JOIN t2 FOR UPDATE;
a b a
1 1 1
SELECT * FROM t1 STRAIGHT_JOIN t2 FOR UPDATE;
a b a
1 1 1
#
# Derived tables and views.
#
SELECT 1 FROM ( SELECT 1 ) AS t2 FOR UPDATE;
1
1
SELECT 1 FROM v1 FOR UPDATE;
1
1
#
# Test of syntax errors.
#
SELECT * FROM t1 FOR SHARE WAIT WAIT;
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'SHARE WAIT WAIT' at line 1
SELECT * FROM t1 FOR SHARE WAIT NOWAIT;
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'SHARE WAIT NOWAIT' at line 1
SELECT * FROM t1 FOR SHARE WAIT SKIP LOCKED;
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'SHARE WAIT SKIP LOCKED' at line 1
SELECT * FROM t1 FOR SHARE WAIT 3 SKIP LOCKED;
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'SHARE WAIT 3 SKIP LOCKED' at line 1
SELECT * FROM t1 FOR SHARE NOWAIT SKIP LOCKED;
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'SHARE NOWAIT SKIP LOCKED' at line 1
SELECT 1 FOR UPDATE UNION SELECT 2;
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'UNION SELECT 2' at line 1
SELECT 1 LOCK IN SHARE MODE UNION SELECT 2;
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'UNION SELECT 2' at line 1
SELECT 1 FOR SHARE UNION SELECT 2;
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'SHARE UNION SELECT 2' at line 1
SELECT * FROM t1 LEFT JOIN t2 FOR UPDATE;
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'FOR UPDATE' at line 1
SELECT * FROM t1 LEFT JOIN t2 FOR SHARE;
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'FOR SHARE' at line 1
SELECT * FROM t1 LEFT JOIN t2 FOR SHARE OF t1 FOR UPDATE OF t2;
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'FOR SHARE OF t1 FOR UPDATE OF t2' at line 1
SELECT * FROM t1 RIGHT JOIN t2 FOR SHARE OF t1 FOR UPDATE OF t2;
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'FOR SHARE OF t1 FOR UPDATE OF t2' at line 1
#
# Test of error messages.
#
CREATE DATABASE db1;
CREATE TABLE db1.t1 ( a INT, b INT );
INSERT INTO t1 VALUES (10, 10);
SELECT MIN(a) FROM t1 FOR UPDATE SKIP LOCKED;
MIN(a)
1
SELECT MAX(a) FROM t1 FOR UPDATE SKIP LOCKED;
MAX(a)
10
SELECT SUM(a) FROM t1 FOR UPDATE SKIP LOCKED;
SUM(a)
11
SELECT MIN(a) FROM t1 FOR UPDATE NOWAIT;
MIN(a)
1
SELECT MAX(a) FROM t1 FOR UPDATE NOWAIT;
MAX(a)
10
SELECT SUM(a) FROM t1 FOR UPDATE NOWAIT;
SUM(a)
11
SELECT DISTINCT * FROM t1 FOR UPDATE SKIP LOCKED;
a b
1 1
10 10
SELECT DISTINCT * FROM t1 FOR UPDATE NOWAIT;
a b
1 1
10 10
SELECT MIN(b) FROM t1 GROUP BY a FOR UPDATE SKIP LOCKED;
MIN(b)
1
10
#
# Regression testing.
#
DROP DATABASE db1;
DROP VIEW v1;
DROP TABLE t1, t2;
#
# Bug#25972285: UNCLEAR ERROR MESSAGE FOR NOWAIT
#
CREATE USER test@localhost;
GRANT CREATE, SELECT, UPDATE on *.* to test@localhost;
CREATE USER test2@localhost;
GRANT CREATE, SELECT, UPDATE on *.* to test2@localhost;
CREATE TABLE t1 ( a INT ) ENGINE=InnoDB;
INSERT INTO t1 VALUES ( 1 );
connect con1, localhost, test, , test;
BEGIN;
SELECT * FROM t1 WHERE a = 2 FOR UPDATE ;
a
connect con2,localhost,test2,,test;
BEGIN;
SELECT * FROM t1 FOR UPDATE NOWAIT;
ERROR HY000: Lock wait timeout exceeded; try restarting transaction
COMMIT;
connection default;
disconnect con1;
disconnect con2;
DROP TABLE t1;
DROP USER test@localhost;
DROP USER test2@localhost;
#
# Bug#30237291: "SELECT ... INTO VAR_NAME FOR UPDATE" NOT WORKING IN
# MYSQL 8
#
SELECT 1 FROM DUAL LIMIT 1 INTO @var FOR UPDATE;
Warnings:
Warning 1287 '<select expression> INTO <destination>;' is deprecated and will be removed in a future release. Please use 'SELECT <select list> INTO <destination> FROM...' instead
SELECT 1 FROM DUAL LIMIT 1 FOR UPDATE INTO @var;
Warnings:
Warning 1287 '<select expression> INTO <destination>;' is deprecated and will be removed in a future release. Please use 'SELECT <select list> INTO <destination> FROM...' instead
SELECT 1 FROM DUAL LIMIT 1 INTO @var FOR UPDATE INTO @var;
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'INTO @var' at line 1
SELECT 1 UNION SELECT 1 FOR UPDATE INTO @var;
Warnings:
Warning 1287 '<select expression> INTO <destination>;' is deprecated and will be removed in a future release. Please use 'SELECT <select list> INTO <destination> FROM...' instead
SELECT 1 UNION SELECT 1 INTO @var FOR UPDATE;
Warnings:
Warning 1287 '<select expression> INTO <destination>;' is deprecated and will be removed in a future release. Please use 'SELECT <select list> INTO <destination> FROM...' instead