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MDEV-15703: Crash in EXECUTE IMMEDIATE 'CREATE OR REPLACE TABLE t1 (a INT DEFAULT ?)' USING DEFAULT

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This patch fixes the issue with passing the DEFAULT or IGNORE values to
positional parameters for some kind of SQL statements to be executed
as prepared statements.

The main idea of the patch is to associate an actual value being passed
by the USING clause with the positional parameter represented by
the Item_param class. Such association must be performed on execution of
UPDATE statement in PS/SP mode. Other corner cases that results in
server crash is on handling CREATE TABLE when positional parameter
placed after the DEFAULT clause or CALL statement and passing either
the value DEFAULT or IGNORE as an actual value for the positional parameter.
This case is fixed by checking whether an error is set in diagnostics
area at the function pack_vcols() on return from the function pack_expression()
This commit is contained in:
Dmitry Shulga
2024-02-08 12:17:02 +07:00
committed by Oleksandr Byelkin
parent 6b2cd78695
commit e48bd474a2
16 changed files with 418 additions and 17 deletions
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118
mysql-test/main/ps.result
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@ -5815,5 +5815,123 @@ GROUP_CONCAT(@x)
0
DROP TABLE t;
#
# MDEV-15703: Crash in EXECUTE IMMEDIATE 'CREATE OR REPLACE TABLE t1 (a INT DEFAULT ?)' USING DEFAULT
#
PREPARE stmt FROM 'CREATE OR REPLACE TABLE t1 (a INT DEFAULT ?)';
EXECUTE stmt USING DEFAULT;
ERROR HY000: Default/ignore value is not supported for such parameter usage
DEALLOCATE PREPARE stmt;
PREPARE stmt FROM 'CREATE OR REPLACE TABLE t1 (a INT DEFAULT ?)';
EXECUTE stmt USING IGNORE;
ERROR HY000: Default/ignore value is not supported for such parameter usage
DEALLOCATE PREPARE stmt;
EXECUTE IMMEDIATE 'CREATE OR REPLACE TABLE t1 (a INT DEFAULT ?)' USING DEFAULT;
ERROR HY000: Default/ignore value is not supported for such parameter usage
EXECUTE IMMEDIATE 'CREATE OR REPLACE TABLE t1 (a INT DEFAULT ?)' USING IGNORE;
ERROR HY000: Default/ignore value is not supported for such parameter usage
EXECUTE IMMEDIATE 'BEGIN NOT ATOMIC DECLARE a INT DEFAULT ?; END' USING DEFAULT;
ERROR HY000: Default/ignore value is not supported for such parameter usage
EXECUTE IMMEDIATE 'BEGIN NOT ATOMIC DECLARE a INT DEFAULT ?; END' USING IGNORE;
ERROR HY000: Default/ignore value is not supported for such parameter usage
CREATE PROCEDURE p1(a INT) SELECT 1;
EXECUTE IMMEDIATE 'CALL p1(?)' USING DEFAULT;
ERROR HY000: Default/ignore value is not supported for such parameter usage
EXECUTE IMMEDIATE 'CALL p1(?)' USING IGNORE;
ERROR HY000: Default/ignore value is not supported for such parameter usage
DROP PROCEDURE p1;
EXECUTE IMMEDIATE 'SELECT ? UNION SELECT 1' USING DEFAULT;
ERROR HY000: Default/ignore value is not supported for such parameter usage
EXECUTE IMMEDIATE 'SELECT ? UNION SELECT 1' USING IGNORE;
ERROR HY000: Default/ignore value is not supported for such parameter usage
EXECUTE IMMEDIATE 'SELECT * FROM (SELECT ? UNION ALL SELECT 1) AS derived' USING DEFAULT;
ERROR HY000: Default/ignore value is not supported for such parameter usage
EXECUTE IMMEDIATE 'SELECT * FROM (SELECT ? UNION ALL SELECT 1) AS derived' USING IGNORE;
ERROR HY000: Default/ignore value is not supported for such parameter usage
EXECUTE IMMEDIATE 'SELECT * FROM (SELECT ? UNION DISTINCT SELECT 1) AS derived' USING DEFAULT;
ERROR HY000: Default/ignore value is not supported for such parameter usage
EXECUTE IMMEDIATE 'SELECT * FROM (SELECT ? UNION DISTINCT SELECT 1) AS derived' USING IGNORE;
ERROR HY000: Default/ignore value is not supported for such parameter usage
# multi-update and DEFAULT
CREATE TABLE t1 (a INT, b INT DEFAULT a);
INSERT into t1 VALUES (1,2),(2,3);
CREATE TABLE t2 (a INT, b INT DEFAULT a);
INSERT INTO t2 VALUES (1,10),(2,30);
UPDATE t1,t2 SET t1.b = DEFAULT, t2.b = DEFAULT WHERE t1.a=t2.a;
SELECT * FROM t1;
a b
1 1
2 2
SELECT * FROM t2;
a b
1 1
2 2
# re-check the case for Prepared Statement with parameters
TRUNCATE TABLE t1;
TRUNCATE TABLE t2;
INSERT INTO t1 VALUES (1,2),(2,3);
INSERT INTO t2 VALUES (1,10),(2,30);
EXECUTE IMMEDIATE 'UPDATE t1,t2 SET t1.b = ?, t2.b = ? WHERE t1.a=t2.a' USING DEFAULT, DEFAULT;
SELECT * FROM t1;
a b
1 1
2 2
SELECT * FROM t2;
a b
1 1
2 2
DROP TABLE t1, t2;
# multi-update and IGNORE
CREATE TABLE t1 (a INT, b INT default a);
INSERT INTO t1 VALUES (1,2),(2,3);
CREATE TABLE t2 (a INT, b INT default a);
INSERT INTO t2 VALUES (1,10),(2,30);
UPDATE t1,t2 SET t1.b = IGNORE, t2.b = IGNORE WHERE t1.a=t2.a;
SELECT * FROM t1;
a b
1 2
2 3
SELECT * FROM t2;
a b
1 NULL
2 NULL
# re-check the case for Prepared Statement with parameters
TRUNCATE TABLE t1;
TRUNCATE TABLE t2;
INSERT INTO t1 VALUES (1,2),(2,3);
INSERT INTO t2 VALUES (1,10),(2,30);
EXECUTE IMMEDIATE 'UPDATE t1,t2 SET t1.b = ?, t2.b = ? WHERE t1.a=t2.a' USING IGNORE, IGNORE;
SELECT * FROM t1;
a b
1 2
2 3
SELECT * FROM t2;
a b
1 10
2 30
DROP TABLE t1, t2;
# multi-update and DEFAULT parameter (no default)
CREATE TABLE t1 (a INT, b INT NOT NULL);
INSERT INTO t1 VALUES (1,2),(2,3);
CREATE TABLE t2 (a INT, b INT NOT NULL);
INSERT INTO t2 VALUES (1,10),(2,30);
EXECUTE IMMEDIATE 'UPDATE t1,t2 SET t1.b = ?, t2.b = ? WHERE t1.a=t2.a' USING DEFAULT, DEFAULT;
ERROR HY000: Field 'b' doesn't have a default value
DROP TABLE t1, t2;
# multi-update and IGNORE parameter (no default)
CREATE TABLE t1 (a INT, b INT NOT NULL);
INSERT INTO t1 VALUES (1,2),(2,3);
CREATE TABLE t2 (a INT, b INT NOT NULL);
INSERT INTO t2 VALUES (1,10),(2,30);
EXECUTE IMMEDIATE 'UPDATE t1,t2 SET t1.b = ?, t2.b = ? WHERE t1.a=t2.a' USING IGNORE, IGNORE;
SELECT * FROM t1;
a b
1 2
2 3
SELECT * FROM t2;
a b
1 10
2 30
DROP TABLE t1, t2;
#
# End of 10.4 tests
#