| Current Path : /usr/opt/mysql57/mysql-test/r/ |
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| Current File : //usr/opt/mysql57/mysql-test/r/trigger_wl6030.result |
#
# WL#6030: Triggers are not processed for NOT NULL columns.
#
CREATE TABLE t2(a INT, b INT, c INT);
###################################################################
# Test 1: BEFORE INSERT, NOT NULL.
# - Test 1.1: SET to NOT NULL.
###################################################################
CREATE TABLE t1(a INT NOT NULL, b INT, c INT);
CREATE TRIGGER t1_bi BEFORE INSERT ON t1 FOR EACH ROW SET NEW.a = 1;
INSERT INTO t2 VALUES (1, 2, 3), (NULL, 20, 30), (NULL, 200, 300);
# Single INSERT ... VALUES.
INSERT INTO t1 VALUES (NULL, 2, 3);
INSERT INTO t1(a, b, c) VALUES (NULL, 20, 30);
INSERT INTO t1(b, c) VALUES (200, 300);
INSERT INTO t1(a) VALUES (NULL);
SELECT * FROM t1;
a b c
1 2 3
1 20 30
1 200 300
1 NULL NULL
DELETE FROM t1;
# Single REPLACE ... VALUES.
REPLACE INTO t1 VALUES (NULL, 2, 3);
REPLACE INTO t1(a, b, c) VALUES (NULL, 20, 30);
REPLACE INTO t1(b, c) VALUES (200, 300);
REPLACE INTO t1(a) VALUES (NULL);
SELECT * FROM t1;
a b c
1 2 3
1 20 30
1 200 300
1 NULL NULL
DELETE FROM t1;
# Multi INSERT ... VALUES.
INSERT INTO t1 VALUES (-1, 2, 3), (NULL, 20, 30), (NULL, 200, 300);
INSERT INTO t1(a, b, c) VALUES (-2, 2, 3), (NULL, 20, 30), (NULL, 200, 300);
INSERT INTO t1(b, c) VALUES (2, 3), (20, 30), (200, 300);
INSERT INTO t1(a) VALUES (-3), (NULL), (NULL);
SELECT * FROM t1;
a b c
1 2 3
1 20 30
1 200 300
1 2 3
1 20 30
1 200 300
1 2 3
1 20 30
1 200 300
1 NULL NULL
1 NULL NULL
1 NULL NULL
DELETE FROM t1;
# Multi REPLACE ... VALUES.
REPLACE INTO t1 VALUES (-1, 2, 3), (NULL, 20, 30), (NULL, 200, 300);
REPLACE INTO t1(a, b, c) VALUES (-2, 2, 3), (NULL, 20, 30), (NULL, 200, 300);
REPLACE INTO t1(b, c) VALUES (2, 3), (20, 30), (200, 300);
REPLACE INTO t1(a) VALUES (-3), (NULL), (NULL);
SELECT * FROM t1;
a b c
1 2 3
1 20 30
1 200 300
1 2 3
1 20 30
1 200 300
1 2 3
1 20 30
1 200 300
1 NULL NULL
1 NULL NULL
1 NULL NULL
DELETE FROM t1;
# INSERT ... SELECT.
INSERT INTO t1 SELECT * FROM t2;
INSERT INTO t1(a, b, c) SELECT * FROM t2;
INSERT INTO t1(b, c) SELECT b, c FROM t2;
INSERT INTO t1(a) SELECT a FROM t2;
SELECT * FROM t1;
a b c
1 2 3
1 20 30
1 200 300
1 2 3
1 20 30
1 200 300
1 2 3
1 20 30
1 200 300
1 NULL NULL
1 NULL NULL
1 NULL NULL
DELETE FROM t1;
# REPLACE ... SELECT.
REPLACE INTO t1 SELECT * FROM t2;
REPLACE INTO t1(a, b, c) SELECT * FROM t2;
REPLACE INTO t1(b, c) SELECT b, c FROM t2;
REPLACE INTO t1(a) SELECT a FROM t2;
SELECT * FROM t1;
a b c
1 2 3
1 20 30
1 200 300
1 2 3
1 20 30
1 200 300
1 2 3
1 20 30
1 200 300
1 NULL NULL
1 NULL NULL
1 NULL NULL
DELETE FROM t1;
DELETE FROM t2;
DROP TRIGGER t1_bi;
###################################################################
# - Test 1.2: SET to NULL.
###################################################################
CREATE TRIGGER t1_bi BEFORE INSERT ON t1 FOR EACH ROW SET NEW.a = NULL;
INSERT INTO t2 VALUES (1, 2, 3), (10, 20, 30), (100, 200, 300);
# Single INSERT ... VALUES.
INSERT INTO t1 VALUES (1, 2, 3);
ERROR 23000: Column 'a' cannot be null
INSERT INTO t1(a, b, c) VALUES (1, 2, 3);
ERROR 23000: Column 'a' cannot be null
INSERT INTO t1(b, c) VALUES (2, 3);
ERROR 23000: Column 'a' cannot be null
INSERT INTO t1(a) VALUES (1);
ERROR 23000: Column 'a' cannot be null
SELECT * FROM t1;
a b c
DELETE FROM t1;
# Single REPLACE ... VALUES.
REPLACE INTO t1 VALUES (1, 2, 3);
ERROR 23000: Column 'a' cannot be null
REPLACE INTO t1(a, b, c) VALUES (1, 2, 3);
ERROR 23000: Column 'a' cannot be null
REPLACE INTO t1(b, c) VALUES (2, 3);
ERROR 23000: Column 'a' cannot be null
REPLACE INTO t1(a) VALUES (1);
ERROR 23000: Column 'a' cannot be null
SELECT * FROM t1;
a b c
DELETE FROM t1;
# Multi INSERT ... VALUES.
INSERT INTO t1 VALUES (1, 2, 3), (10, 20, 30), (100, 200, 300);
ERROR 23000: Column 'a' cannot be null
INSERT INTO t1(a, b, c) VALUES (1, 2, 3), (10, 20, 30), (100, 200, 300);
ERROR 23000: Column 'a' cannot be null
INSERT INTO t1(b, c) VALUES (2, 3), (20, 30), (200, 300);
ERROR 23000: Column 'a' cannot be null
INSERT INTO t1(a) VALUES (1), (10), (100);
ERROR 23000: Column 'a' cannot be null
SELECT * FROM t1;
a b c
DELETE FROM t1;
# Multi REPLACE ... VALUES.
REPLACE INTO t1 VALUES (1, 2, 3), (10, 20, 30), (100, 200, 300);
ERROR 23000: Column 'a' cannot be null
REPLACE INTO t1(a, b, c) VALUES (1, 2, 3), (10, 20, 30), (100, 200, 300);
ERROR 23000: Column 'a' cannot be null
REPLACE INTO t1(b, c) VALUES (2, 3), (20, 30), (200, 300);
ERROR 23000: Column 'a' cannot be null
REPLACE INTO t1(a) VALUES (1), (10), (100);
ERROR 23000: Column 'a' cannot be null
SELECT * FROM t1;
a b c
DELETE FROM t1;
# INSERT ... SELECT.
INSERT INTO t1 SELECT * FROM t2;
ERROR 23000: Column 'a' cannot be null
INSERT INTO t1(a, b, c) SELECT * FROM t2;
ERROR 23000: Column 'a' cannot be null
INSERT INTO t1(b, c) SELECT b, c FROM t2;
ERROR 23000: Column 'a' cannot be null
INSERT INTO t1(a) SELECT a FROM t2;
ERROR 23000: Column 'a' cannot be null
SELECT * FROM t1;
a b c
DELETE FROM t1;
# REPLACE ... SELECT.
REPLACE INTO t1 SELECT * FROM t2;
ERROR 23000: Column 'a' cannot be null
REPLACE INTO t1(a, b, c) SELECT * FROM t2;
ERROR 23000: Column 'a' cannot be null
REPLACE INTO t1(b, c) SELECT b, c FROM t2;
ERROR 23000: Column 'a' cannot be null
REPLACE INTO t1(a) SELECT a FROM t2;
ERROR 23000: Column 'a' cannot be null
SELECT * FROM t1;
a b c
DELETE FROM t1;
DROP TRIGGER t1_bi;
###################################################################
# Test 2: BEFORE UPDATE, NOT NULL.
# - Test 2.1: SET to NOT NULL.
###################################################################
CREATE TRIGGER t1_bu BEFORE UPDATE ON t1 FOR EACH ROW SET NEW.a = 999;
INSERT INTO t1 VALUES (1, 2, 3), (10, 20, 30), (100, 200, 300);
# Regular UPDATE.
UPDATE t1 SET a = NULL WHERE a = 1;
UPDATE t1 SET a = NULL, c = NULL WHERE a = 100;
SELECT * FROM t1;
a b c
999 2 3
10 20 30
999 200 NULL
DELETE FROM t1;
INSERT INTO t1 VALUES (1, 2, 3), (10, 20, 30), (100, 200, 300);
# Multiple UPDATE.
CREATE TABLE t3(a INT, b INT);
INSERT INTO t3 VALUES (10, -10);
UPDATE t1, t3 SET t1.a = NULL, t3.a = -20 WHERE t1.a = t3.a AND t3.a = 10;
SELECT * FROM t1;
a b c
1 2 3
999 20 30
100 200 300
SELECT * FROM t3;
a b
-20 -10
DROP TRIGGER t1_bu;
DROP TABLE t3;
DELETE FROM t1;
CREATE TABLE t3(a INT NOT NULL, b INT);
CREATE TRIGGER t3_bu BEFORE UPDATE ON t3 FOR EACH ROW SET NEW.a = 999;
INSERT INTO t1 VALUES (1, 2, 3), (10, 20, 30), (100, 200, 300);
INSERT INTO t3 VALUES (10, -10);
UPDATE t1, t3 SET t1.a = -20, t3.a = NULL WHERE t1.a = t3.a AND t3.a = 10;
SELECT * FROM t1;
a b c
1 2 3
-20 20 30
100 200 300
SELECT * FROM t3;
a b
999 -10
DROP TRIGGER t3_bu;
DROP TABLE t3;
# - Test 2.1: SET to NULL.
CREATE TRIGGER t1_bu BEFORE UPDATE ON t1 FOR EACH ROW SET NEW.a = NULL;
DELETE FROM t1;
INSERT INTO t1 VALUES (1, 2, 3), (10, 20, 30), (100, 200, 300);
# Regular UPDATE.
UPDATE t1 SET a = 99 WHERE a = 1;
ERROR 23000: Column 'a' cannot be null
UPDATE t1 SET a = 99, b = 99 WHERE a = 1;
ERROR 23000: Column 'a' cannot be null
SELECT * FROM t1;
a b c
1 2 3
10 20 30
100 200 300
# Multiple UPDATE.
CREATE TABLE t3(a INT, b INT);
INSERT INTO t3 VALUES (10, -10);
UPDATE t1, t3 SET t1.a = 99, t3.a = -10 WHERE t1.a = t3.a AND t3.a = 10;
ERROR 23000: Column 'a' cannot be null
SELECT * FROM t1;
a b c
1 2 3
10 20 30
100 200 300
SELECT * FROM t3;
a b
-10 -10
DELETE FROM t1;
DELETE FROM t2;
DROP TABLE t3;
DROP TRIGGER t1_bu;
###################################################################
# Test 3: Using illegal NULL-value as r-value.
# - Test 3.1: using NULL.
###################################################################
CREATE TRIGGER t1_bi BEFORE INSERT ON t1 FOR EACH ROW
BEGIN
SET NEW.b = NEW.a;
SET NEW.a = 1;
END|
INSERT INTO t2 VALUES (1, 2, 3), (NULL, 20, 30), (NULL, 200, 300);
# Single INSERT ... VALUES.
INSERT INTO t1 VALUES (NULL, 2, 3);
INSERT INTO t1(a, b, c) VALUES (NULL, 20, 30);
INSERT INTO t1(b, c) VALUES (200, 300);
INSERT INTO t1(a) VALUES (NULL);
SELECT * FROM t1;
a b c
1 NULL 3
1 NULL 30
1 NULL 300
1 NULL NULL
DELETE FROM t1;
# Single REPLACE ... VALUES.
REPLACE INTO t1 VALUES (NULL, 2, 3);
REPLACE INTO t1(a, b, c) VALUES (NULL, 20, 30);
REPLACE INTO t1(b, c) VALUES (200, 300);
REPLACE INTO t1(a) VALUES (NULL);
SELECT * FROM t1;
a b c
1 NULL 3
1 NULL 30
1 NULL 300
1 NULL NULL
DELETE FROM t1;
# Multi INSERT ... VALUES.
INSERT INTO t1 VALUES (-1, 2, 3), (NULL, 20, 30), (NULL, 200, 300);
INSERT INTO t1(a, b, c) VALUES (-2, 2, 3), (NULL, 20, 30), (NULL, 200, 300);
INSERT INTO t1(b, c) VALUES (2, 3), (20, 30), (200, 300);
INSERT INTO t1(a) VALUES (-3), (NULL), (NULL);
SELECT * FROM t1;
a b c
1 -1 3
1 NULL 30
1 NULL 300
1 -2 3
1 NULL 30
1 NULL 300
1 NULL 3
1 NULL 30
1 NULL 300
1 -3 NULL
1 NULL NULL
1 NULL NULL
DELETE FROM t1;
# Multi REPLACE ... VALUES.
REPLACE INTO t1 VALUES (-1, 2, 3), (NULL, 20, 30), (NULL, 200, 300);
REPLACE INTO t1(a, b, c) VALUES (-2, 2, 3), (NULL, 20, 30), (NULL, 200, 300);
REPLACE INTO t1(b, c) VALUES (2, 3), (20, 30), (200, 300);
REPLACE INTO t1(a) VALUES (-3), (NULL), (NULL);
SELECT * FROM t1;
a b c
1 -1 3
1 NULL 30
1 NULL 300
1 -2 3
1 NULL 30
1 NULL 300
1 NULL 3
1 NULL 30
1 NULL 300
1 -3 NULL
1 NULL NULL
1 NULL NULL
DELETE FROM t1;
# INSERT ... SELECT
INSERT INTO t1 SELECT * FROM t2;
INSERT INTO t1(a, b, c) SELECT * FROM t2;
INSERT INTO t1(b, c) SELECT b, c FROM t2;
INSERT INTO t1(a) SELECT a FROM t2;
SELECT * FROM t1;
a b c
1 1 3
1 NULL 30
1 NULL 300
1 1 3
1 NULL 30
1 NULL 300
1 NULL 3
1 NULL 30
1 NULL 300
1 1 NULL
1 NULL NULL
1 NULL NULL
DELETE FROM t1;
# REPLACE ... SELECT
REPLACE INTO t1 SELECT * FROM t2;
REPLACE INTO t1(a, b, c) SELECT * FROM t2;
REPLACE INTO t1(b, c) SELECT b, c FROM t2;
REPLACE INTO t1(a) SELECT a FROM t2;
SELECT * FROM t1;
a b c
1 1 3
1 NULL 30
1 NULL 300
1 1 3
1 NULL 30
1 NULL 300
1 NULL 3
1 NULL 30
1 NULL 300
1 1 NULL
1 NULL NULL
1 NULL NULL
DELETE FROM t1;
DROP TRIGGER t1_bi;
###################################################################
# - Test 3.2: using NOT NULL.
###################################################################
CREATE TRIGGER t1_bi BEFORE INSERT ON t1 FOR EACH ROW
BEGIN
SET NEW.a = 99;
SET NEW.b = NEW.a;
END|
# Single INSERT ... VALUES.
INSERT INTO t1 VALUES (NULL, 2, 3);
INSERT INTO t1(a, b, c) VALUES (NULL, 20, 30);
INSERT INTO t1(b, c) VALUES (200, 300);
INSERT INTO t1(a) VALUES (NULL);
SELECT * FROM t1;
a b c
99 99 3
99 99 30
99 99 300
99 99 NULL
DELETE FROM t1;
# Single REPLACE ... VALUES.
REPLACE INTO t1 VALUES (NULL, 2, 3);
REPLACE INTO t1(a, b, c) VALUES (NULL, 20, 30);
REPLACE INTO t1(b, c) VALUES (200, 300);
REPLACE INTO t1(a) VALUES (NULL);
SELECT * FROM t1;
a b c
99 99 3
99 99 30
99 99 300
99 99 NULL
DELETE FROM t1;
# Multi INSERT ... VALUES.
INSERT INTO t1 VALUES (-1, 2, 3), (NULL, 20, 30), (NULL, 200, 300);
INSERT INTO t1(a, b, c) VALUES (-2, 2, 3), (NULL, 20, 30), (NULL, 200, 300);
INSERT INTO t1(b, c) VALUES (2, 3), (20, 30), (200, 300);
INSERT INTO t1(a) VALUES (-3), (NULL), (NULL);
SELECT * FROM t1;
a b c
99 99 3
99 99 30
99 99 300
99 99 3
99 99 30
99 99 300
99 99 3
99 99 30
99 99 300
99 99 NULL
99 99 NULL
99 99 NULL
DELETE FROM t1;
# Multi REPLACE ... VALUES.
REPLACE INTO t1 VALUES (-1, 2, 3), (NULL, 20, 30), (NULL, 200, 300);
REPLACE INTO t1(a, b, c) VALUES (-2, 2, 3), (NULL, 20, 30), (NULL, 200, 300);
REPLACE INTO t1(b, c) VALUES (2, 3), (20, 30), (200, 300);
REPLACE INTO t1(a) VALUES (-3), (NULL), (NULL);
SELECT * FROM t1;
a b c
99 99 3
99 99 30
99 99 300
99 99 3
99 99 30
99 99 300
99 99 3
99 99 30
99 99 300
99 99 NULL
99 99 NULL
99 99 NULL
DELETE FROM t1;
# INSERT ... SELECT
INSERT INTO t1 SELECT * FROM t2;
INSERT INTO t1(a, b, c) SELECT * FROM t2;
INSERT INTO t1(b, c) SELECT b, c FROM t2;
INSERT INTO t1(a) SELECT a FROM t2;
SELECT * FROM t1;
a b c
99 99 3
99 99 30
99 99 300
99 99 3
99 99 30
99 99 300
99 99 3
99 99 30
99 99 300
99 99 NULL
99 99 NULL
99 99 NULL
DELETE FROM t1;
# REPLACE ... SELECT
REPLACE INTO t1 SELECT * FROM t2;
REPLACE INTO t1(a, b, c) SELECT * FROM t2;
REPLACE INTO t1(b, c) SELECT b, c FROM t2;
REPLACE INTO t1(a) SELECT a FROM t2;
SELECT * FROM t1;
a b c
99 99 3
99 99 30
99 99 300
99 99 3
99 99 30
99 99 300
99 99 3
99 99 30
99 99 300
99 99 NULL
99 99 NULL
99 99 NULL
DELETE FROM t1;
DELETE FROM t2;
DROP TRIGGER t1_bi;
###################################################################
# Test 4: Temporarily setting to illegal NULL-value in trigger
# (here we only check that it's possible to temporarily assign
# NULL in triggers).
###################################################################
CREATE TRIGGER t1_bi BEFORE INSERT ON t1 FOR EACH ROW
BEGIN
SET NEW.a = NULL;
SET NEW.b = NEW.a;
SET NEW.a = 99;
END|
CREATE TRIGGER t1_bu BEFORE UPDATE ON t1 FOR EACH ROW
BEGIN
SET NEW.a = NULL;
SET NEW.b = NEW.a;
SET NEW.a = 199;
END|
# Checking BEFORE INSERT trigger.
INSERT INTO t1 VALUES (1, 2, 3);
INSERT INTO t1 VALUES (1, 2, 3), (10, 20, 30), (100, 200, 300);
SELECT * FROM t1;
a b c
99 NULL 3
99 NULL 3
99 NULL 30
99 NULL 300
# Checking BEFORE UPDATE trigger.
UPDATE t1 SET b = 999 WHERE c = 300;
SELECT * FROM t1;
a b c
99 NULL 3
99 NULL 3
99 NULL 30
199 NULL 300
DROP TRIGGER t1_bi;
DROP TRIGGER t1_bu;
DELETE FROM t1;
###################################################################
# Test 5: Using IS NULL inside trigger.
# - Test 5.1: BEFORE INSERT trigger.
###################################################################
ALTER TABLE t1 ADD COLUMN a_new_is_null BOOLEAN DEFAULT NULL;
CREATE TRIGGER t1_bi BEFORE INSERT ON t1 FOR EACH ROW
BEGIN
SET NEW.a_new_is_null = NEW.a IS NULL;
SET NEW.a = 99;
END|
INSERT INTO t2 VALUES (1, 2, 3), (NULL, 20, 30), (NULL, 200, 300);
# Single INSERT ... VALUES.
INSERT INTO t1 VALUES (NULL, 2, 3, NULL);
INSERT INTO t1(a, b, c) VALUES (NULL, 20, 30);
INSERT INTO t1(b, c) VALUES (200, 300);
INSERT INTO t1(a) VALUES (NULL);
SELECT * FROM t1;
a b c a_new_is_null
99 2 3 1
99 20 30 1
99 200 300 1
99 NULL NULL 1
DELETE FROM t1;
# Single REPLACE ... VALUES.
REPLACE INTO t1 VALUES (NULL, 2, 3, NULL);
REPLACE INTO t1(a, b, c) VALUES (NULL, 20, 30);
REPLACE INTO t1(b, c) VALUES (200, 300);
REPLACE INTO t1(a) VALUES (NULL);
SELECT * FROM t1;
a b c a_new_is_null
99 2 3 1
99 20 30 1
99 200 300 1
99 NULL NULL 1
DELETE FROM t1;
# Multi INSERT ... VALUES.
INSERT INTO t1 VALUES
(-1, 2, 3, NULL), (NULL, 20, 30, NULL), (NULL, 200, 300, NULL);
INSERT INTO t1(a, b, c) VALUES (-2, 2, 3), (NULL, 20, 30), (NULL, 200, 300);
INSERT INTO t1(b, c) VALUES (2, 3), (20, 30), (200, 300);
INSERT INTO t1(a) VALUES (-3), (NULL), (NULL);
SELECT * FROM t1;
a b c a_new_is_null
99 2 3 0
99 20 30 1
99 200 300 1
99 2 3 0
99 20 30 1
99 200 300 1
99 2 3 1
99 20 30 1
99 200 300 1
99 NULL NULL 0
99 NULL NULL 1
99 NULL NULL 1
DELETE FROM t1;
# Multi REPLACE ... VALUES.
REPLACE INTO t1 VALUES
(-1, 2, 3, NULL), (NULL, 20, 30, NULL), (NULL, 200, 300, NULL);
REPLACE INTO t1(a, b, c) VALUES (-2, 2, 3), (NULL, 20, 30), (NULL, 200, 300);
REPLACE INTO t1(b, c) VALUES (2, 3), (20, 30), (200, 300);
REPLACE INTO t1(a) VALUES (-3), (NULL), (NULL);
SELECT * FROM t1;
a b c a_new_is_null
99 2 3 0
99 20 30 1
99 200 300 1
99 2 3 0
99 20 30 1
99 200 300 1
99 2 3 1
99 20 30 1
99 200 300 1
99 NULL NULL 0
99 NULL NULL 1
99 NULL NULL 1
DELETE FROM t1;
# INSERT ... SELECT
INSERT INTO t1 SELECT t2.*, NULL FROM t2;
INSERT INTO t1(a, b, c) SELECT * FROM t2;
INSERT INTO t1(b, c) SELECT b, c FROM t2;
INSERT INTO t1(a) SELECT a FROM t2;
SELECT * FROM t1;
a b c a_new_is_null
99 2 3 0
99 20 30 1
99 200 300 1
99 2 3 0
99 20 30 1
99 200 300 1
99 2 3 1
99 20 30 1
99 200 300 1
99 NULL NULL 0
99 NULL NULL 1
99 NULL NULL 1
DELETE FROM t1;
# REPLACE ... SELECT
REPLACE INTO t1 SELECT t2.*, NULL FROM t2;
REPLACE INTO t1(a, b, c) SELECT * FROM t2;
REPLACE INTO t1(b, c) SELECT b, c FROM t2;
REPLACE INTO t1(a) SELECT a FROM t2;
SELECT * FROM t1;
a b c a_new_is_null
99 2 3 0
99 20 30 1
99 200 300 1
99 2 3 0
99 20 30 1
99 200 300 1
99 2 3 1
99 20 30 1
99 200 300 1
99 NULL NULL 0
99 NULL NULL 1
99 NULL NULL 1
DELETE FROM t1;
DROP TRIGGER t1_bi;
###################################################################
# - Test 5.2: BEFORE UPDATE trigger.
###################################################################
ALTER TABLE t1 ADD COLUMN a_old_is_null BOOLEAN DEFAULT NULL;
ALTER TABLE t1 ADD COLUMN b_new_is_null BOOLEAN DEFAULT NULL;
ALTER TABLE t1 ADD COLUMN b_old_is_null BOOLEAN DEFAULT NULL;
CREATE TRIGGER t1_bu BEFORE UPDATE ON t1 FOR EACH ROW
BEGIN
SET NEW.a_new_is_null = NEW.a IS NULL;
SET NEW.a_old_is_null = OLD.a IS NULL;
SET NEW.b_new_is_null = NEW.b IS NULL;
SET NEW.b_old_is_null = OLD.b IS NULL;
SET NEW.a = 99;
END|
INSERT INTO t1(a, b, c) VALUES (1, 2, 3), (10, 20, 30), (100, 200, 300);
# Regular UPDATE.
UPDATE t1 SET a = NULL WHERE a = 1;
UPDATE t1 SET a = NULL, c = NULL WHERE a = 10;
UPDATE t1 SET b = NULL WHERE a = 100;
SELECT * FROM t1;
a b c a_new_is_null a_old_is_null b_new_is_null b_old_is_null
99 2 3 1 0 0 0
99 20 NULL 1 0 0 0
99 NULL 300 0 0 1 0
DELETE FROM t1;
INSERT INTO t1(a, b, c) VALUES (1, 2, 3), (10, 20, 30), (100, 200, 300);
# Multiple UPDATE.
CREATE TABLE t3(a INT, b INT);
INSERT INTO t3 VALUES (10, -10);
UPDATE t1, t3 SET t1.a = NULL, t3.a = -20 WHERE t1.a = t3.a AND t3.a = 10;
SELECT * FROM t1;
a b c a_new_is_null a_old_is_null b_new_is_null b_old_is_null
1 2 3 NULL NULL NULL NULL
99 20 30 1 0 0 0
100 200 300 NULL NULL NULL NULL
SELECT * FROM t3;
a b
-20 -10
DROP TABLE t3;
DROP TRIGGER t1_bu;
DROP TABLE t1;
DROP TABLE t2;
###################################################################
# Test 6: Nullability of non-updated columns.
###################################################################
CREATE TABLE t1(a INT, b INT NOT NULL);
# - Unconditional SET in a trigger.
CREATE TRIGGER t1_bi BEFORE INSERT ON t1 FOR EACH ROW
SET NEW.b = NULL;
INSERT INTO t1(a) VALUES (1);
ERROR 23000: Column 'b' cannot be null
REPLACE INTO t1(a) VALUES (1);
ERROR 23000: Column 'b' cannot be null
SELECT * FROM t1;
a b
DELETE FROM t1;
DROP TRIGGER t1_bi;
# - Conditional SET in a trigger, which is executed for every row.
CREATE TRIGGER t1_bi BEFORE INSERT ON t1 FOR EACH ROW
BEGIN
SET NEW.b = NEW.a;
IF NEW.b IS NULL THEN
SET NEW.b = 1;
END IF;
END|
INSERT INTO t1(a) VALUES (NULL);
REPLACE INTO t1(a) VALUES (NULL);
SELECT * FROM t1;
a b
NULL 1
NULL 1
DELETE FROM t1;
DROP TRIGGER t1_bi;
# - Conditional SET in a trigger, which is NOT executed for every row.
SET sql_mode = 'NO_ENGINE_SUBSTITUTION';
Warnings:
Warning 3090 Changing sql mode 'NO_AUTO_CREATE_USER' is deprecated. It will be removed in a future release.
CREATE TRIGGER t1_bi BEFORE INSERT ON t1 FOR EACH ROW
BEGIN
IF (MOD(NEW.a, 2) = 0) THEN
SET NEW.b = NEW.a - 1;
END IF;
END|
INSERT INTO t1(a) VALUES (1), (2), (3), (4), (5), (6);
Warnings:
Warning 1364 Field 'b' doesn't have a default value
REPLACE INTO t1(a) VALUES (1), (2), (3), (4), (5), (6);
Warnings:
Warning 1364 Field 'b' doesn't have a default value
SELECT * FROM t1;
a b
1 0
2 1
3 0
4 3
5 0
6 5
1 0
2 1
3 0
4 3
5 0
6 5
DROP TABLE t1;
SET sql_mode = default;
###################################################################
# Test 7: Nullability of column being copied as result of INSERT SELECT.
###################################################################
CREATE TABLE t1(a INT NOT NULL);
CREATE TABLE t2(a INT);
INSERT INTO t2 VALUES (NULL);
CREATE TRIGGER t1_bi BEFORE INSERT ON t1 FOR EACH ROW
SET NEW.a = 1;
INSERT INTO t1 SELECT * FROM t2;
REPLACE INTO t1 SELECT * FROM t2;
SELECT * FROM t1;
a
1
1
DROP TRIGGER t1_bi;
DROP TABLE t1,t2;
CREATE TABLE t1(a INT NOT NULL);
INSERT INTO t1 VALUES (1);
CREATE TRIGGER t1_bu BEFORE UPDATE ON t1 FOR EACH ROW
SET NEW.a = 2;
CREATE TABLE t2(a INT);
INSERT INTO t2 VALUES (NULL);
UPDATE t1, t2 SET t1.a = t2.a;
SELECT * FROM t1;
a
2
DROP TRIGGER t1_bu;
DROP TABLE t1,t2;
###################################################################
# Test 8: Nullability of column being copied as result of
# LOAD DATA INFILE.
###################################################################
CREATE TABLE t1 (a INT NOT NULL, b VARCHAR(10) NOT NULL);
CREATE TRIGGER t1_bi BEFORE INSERT ON t1 FOR EACH ROW
BEGIN
IF NEW.b IS NULL THEN
SET NEW.b = '123';
END IF;
END |
LOAD DATA INFILE '../../std_data/wl6030.dat' INTO TABLE t1 FIELDS
TERMINATED BY ',' ENCLOSED BY '"';
SELECT * FROM t1;
a b
457 123
321 text
579 123
789
987 123
DROP TRIGGER t1_bi;
DROP TABLE t1;
###################################################################
# Misc tests.
###################################################################
CREATE TABLE t1(a INT, b INT NOT NULL);
CREATE VIEW v1 AS SELECT * FROM t1;
CREATE TABLE t2(a INT, b INT NOT NULL, c INT NOT NULL, d INT NOT NULL);
CREATE VIEW v2 AS SELECT * FROM t2;
CREATE TABLE t1_data(a INT, b INT);
INSERT INTO t1_data VALUES
(11, 12),
(NULL, 22),
(31, NULL),
(NULL, NULL);
CREATE TABLE t2_data(a INT, b INT, c INT, d INT);
INSERT INTO t2_data VALUES
(11, 12, 13, 14),
(NULL, 22, 23, 24),
(31, NULL, 33, 34),
(41, 42, NULL, 44),
(51, 52, 53, NULL),
(NULL, NULL, NULL, NULL);
SET @sql_mode_saved = @@sql_mode;
###################################################################
# Checking permissive SQL_MODE.
###################################################################
SET sql_mode = '';
Warnings:
Warning 3090 Changing sql mode 'NO_AUTO_CREATE_USER' is deprecated. It will be removed in a future release.
#------------------------------------------------------------------
# Checking INSERT INTO ... VALUES ...
#------------------------------------------------------------------
# - No column list (all columns) + NULL-value for NOT NULL column.
INSERT INTO t1 VALUES (1, NULL);
ERROR 23000: Column 'b' cannot be null
INSERT INTO v1 VALUES (1, NULL);
ERROR 23000: Column 'b' cannot be null
SELECT * FROM t1;
a b
REPLACE INTO t1 VALUES (1, NULL);
ERROR 23000: Column 'b' cannot be null
REPLACE INTO v1 VALUES (1, NULL);
ERROR 23000: Column 'b' cannot be null
SELECT * FROM t1;
a b
INSERT INTO t2 VALUES (1, 2, NULL, 4);
ERROR 23000: Column 'c' cannot be null
INSERT INTO v2 VALUES (1, 2, NULL, 4);
ERROR 23000: Column 'c' cannot be null
SELECT * FROM t2;
a b c d
REPLACE INTO t2 VALUES (1, 2, NULL, 4);
ERROR 23000: Column 'c' cannot be null
REPLACE INTO v2 VALUES (1, 2, NULL, 4);
ERROR 23000: Column 'c' cannot be null
SELECT * FROM t2;
a b c d
# - All columns + NULL-value for NOT NULL column.
INSERT INTO v1(a, b) VALUES (1, NULL);
ERROR 23000: Column 'b' cannot be null
INSERT INTO t1(a, b) VALUES (1, NULL);
ERROR 23000: Column 'b' cannot be null
SELECT * FROM t1;
a b
REPLACE INTO v1(a, b) VALUES (1, NULL);
ERROR 23000: Column 'b' cannot be null
REPLACE INTO t1(a, b) VALUES (1, NULL);
ERROR 23000: Column 'b' cannot be null
SELECT * FROM t1;
a b
INSERT INTO t2(a, b, c, d) VALUES (1, 2, NULL, 4);
ERROR 23000: Column 'c' cannot be null
INSERT INTO v2(a, b, c, d) VALUES (1, 2, NULL, 4);
ERROR 23000: Column 'c' cannot be null
SELECT * FROM t2;
a b c d
REPLACE INTO t2(a, b, c, d) VALUES (1, 2, NULL, 4);
ERROR 23000: Column 'c' cannot be null
REPLACE INTO v2(a, b, c, d) VALUES (1, 2, NULL, 4);
ERROR 23000: Column 'c' cannot be null
SELECT * FROM t2;
a b c d
# - Single nullable column, no values for NOT NULL columns.
# Expect exactly 4 warnings and 8 rows being inserted into t1.
INSERT INTO t1(a) VALUES (1);
Warnings:
Warning 1364 Field 'b' doesn't have a default value
INSERT INTO t1(a) VALUES (2), (3), (4);
Warnings:
Warning 1364 Field 'b' doesn't have a default value
INSERT INTO v1(a) VALUES (5);
Warnings:
Warning 1423 Field of view 'test.v1' underlying table doesn't have a default value
INSERT INTO v1(a) VALUES (6), (7), (8);
Warnings:
Warning 1423 Field of view 'test.v1' underlying table doesn't have a default value
SELECT * FROM t1;
a b
1 0
2 0
3 0
4 0
5 0
6 0
7 0
8 0
DELETE FROM t1;
REPLACE INTO t1(a) VALUES (1);
Warnings:
Warning 1364 Field 'b' doesn't have a default value
REPLACE INTO t1(a) VALUES (2), (3), (4);
Warnings:
Warning 1364 Field 'b' doesn't have a default value
REPLACE INTO v1(a) VALUES (5);
Warnings:
Warning 1423 Field of view 'test.v1' underlying table doesn't have a default value
REPLACE INTO v1(a) VALUES (6), (7), (8);
Warnings:
Warning 1423 Field of view 'test.v1' underlying table doesn't have a default value
SELECT * FROM t1;
a b
1 0
2 0
3 0
4 0
5 0
6 0
7 0
8 0
DELETE FROM t1;
INSERT INTO t2(a) VALUES (1);
Warnings:
Warning 1364 Field 'b' doesn't have a default value
Warning 1364 Field 'c' doesn't have a default value
Warning 1364 Field 'd' doesn't have a default value
INSERT INTO t2(a) VALUES (2), (3), (4);
Warnings:
Warning 1364 Field 'b' doesn't have a default value
Warning 1364 Field 'c' doesn't have a default value
Warning 1364 Field 'd' doesn't have a default value
INSERT INTO v2(a) VALUES (5);
Warnings:
Warning 1423 Field of view 'test.v2' underlying table doesn't have a default value
Warning 1423 Field of view 'test.v2' underlying table doesn't have a default value
Warning 1423 Field of view 'test.v2' underlying table doesn't have a default value
INSERT INTO v2(a) VALUES (6), (7), (8);
Warnings:
Warning 1423 Field of view 'test.v2' underlying table doesn't have a default value
Warning 1423 Field of view 'test.v2' underlying table doesn't have a default value
Warning 1423 Field of view 'test.v2' underlying table doesn't have a default value
SELECT * FROM t2;
a b c d
1 0 0 0
2 0 0 0
3 0 0 0
4 0 0 0
5 0 0 0
6 0 0 0
7 0 0 0
8 0 0 0
DELETE FROM t2;
REPLACE INTO t2(a) VALUES (1);
Warnings:
Warning 1364 Field 'b' doesn't have a default value
Warning 1364 Field 'c' doesn't have a default value
Warning 1364 Field 'd' doesn't have a default value
REPLACE INTO t2(a) VALUES (2), (3), (4);
Warnings:
Warning 1364 Field 'b' doesn't have a default value
Warning 1364 Field 'c' doesn't have a default value
Warning 1364 Field 'd' doesn't have a default value
REPLACE INTO v2(a) VALUES (5);
Warnings:
Warning 1423 Field of view 'test.v2' underlying table doesn't have a default value
Warning 1423 Field of view 'test.v2' underlying table doesn't have a default value
Warning 1423 Field of view 'test.v2' underlying table doesn't have a default value
REPLACE INTO v2(a) VALUES (6), (7), (8);
Warnings:
Warning 1423 Field of view 'test.v2' underlying table doesn't have a default value
Warning 1423 Field of view 'test.v2' underlying table doesn't have a default value
Warning 1423 Field of view 'test.v2' underlying table doesn't have a default value
SELECT * FROM t2;
a b c d
1 0 0 0
2 0 0 0
3 0 0 0
4 0 0 0
5 0 0 0
6 0 0 0
7 0 0 0
8 0 0 0
DELETE FROM t2;
#------------------------------------------------------------------
# Checking INSERT INTO ... SELECT ...
#------------------------------------------------------------------
# - No column list (all columns) + NULL-value for NOT NULL column.
# Expect 4 warnings for each statement.
INSERT INTO t1 SELECT * FROM t1_data;
Warnings:
Warning 1048 Column 'b' cannot be null
INSERT INTO v1 SELECT a * 10, b * 10 FROM t1_data;
Warnings:
Warning 1048 Column 'b' cannot be null
SELECT * FROM t1;
a b
11 12
NULL 22
31 0
NULL 0
110 120
NULL 220
310 0
NULL 0
DELETE FROM t1;
REPLACE INTO t1 SELECT * FROM t1_data;
Warnings:
Warning 1048 Column 'b' cannot be null
REPLACE INTO v1 SELECT a * 10, b * 10 FROM t1_data;
Warnings:
Warning 1048 Column 'b' cannot be null
SELECT * FROM t1;
a b
11 12
NULL 22
31 0
NULL 0
110 120
NULL 220
310 0
NULL 0
DELETE FROM t1;
# - No column list (all columns) + NULL-value for NOT NULL column.
# Expect 4 warnings for each statement.
INSERT INTO t2 SELECT * FROM t2_data;
Warnings:
Warning 1048 Column 'b' cannot be null
Warning 1048 Column 'c' cannot be null
Warning 1048 Column 'd' cannot be null
INSERT INTO v2 SELECT a * 10, b * 10, c * 10, d * 10 FROM t2_data;
Warnings:
Warning 1048 Column 'b' cannot be null
Warning 1048 Column 'c' cannot be null
Warning 1048 Column 'd' cannot be null
SELECT * FROM t2;
a b c d
11 12 13 14
NULL 22 23 24
31 0 33 34
41 42 0 44
51 52 53 0
NULL 0 0 0
110 120 130 140
NULL 220 230 240
310 0 330 340
410 420 0 440
510 520 530 0
NULL 0 0 0
DELETE FROM t2;
REPLACE INTO t2 SELECT * FROM t2_data;
Warnings:
Warning 1048 Column 'b' cannot be null
Warning 1048 Column 'c' cannot be null
Warning 1048 Column 'd' cannot be null
REPLACE INTO v2 SELECT a * 10, b * 10, c * 10, d * 10 FROM t2_data;
Warnings:
Warning 1048 Column 'b' cannot be null
Warning 1048 Column 'c' cannot be null
Warning 1048 Column 'd' cannot be null
SELECT * FROM t2;
a b c d
11 12 13 14
NULL 22 23 24
31 0 33 34
41 42 0 44
51 52 53 0
NULL 0 0 0
110 120 130 140
NULL 220 230 240
310 0 330 340
410 420 0 440
510 520 530 0
NULL 0 0 0
DELETE FROM t2;
# - All columns + NULL-value for NOT NULL column.
# Expect 4 warnings for each statement.
INSERT INTO t1(a, b) SELECT * FROM t1_data;
Warnings:
Warning 1048 Column 'b' cannot be null
INSERT INTO v1(a, b) SELECT a * 10, b * 10 FROM t1_data;
Warnings:
Warning 1048 Column 'b' cannot be null
SELECT * FROM t1;
a b
11 12
NULL 22
31 0
NULL 0
110 120
NULL 220
310 0
NULL 0
DELETE FROM t1;
REPLACE INTO t1(a, b) SELECT * FROM t1_data;
Warnings:
Warning 1048 Column 'b' cannot be null
REPLACE INTO v1(a, b) SELECT a * 10, b * 10 FROM t1_data;
Warnings:
Warning 1048 Column 'b' cannot be null
SELECT * FROM t1;
a b
11 12
NULL 22
31 0
NULL 0
110 120
NULL 220
310 0
NULL 0
DELETE FROM t1;
INSERT INTO t2(a, b, c, d) SELECT * FROM t2_data;
Warnings:
Warning 1048 Column 'b' cannot be null
Warning 1048 Column 'c' cannot be null
Warning 1048 Column 'd' cannot be null
INSERT INTO v2(a, b, c, d) SELECT a * 10, b * 10, c * 10, d * 10 FROM t2_data;
Warnings:
Warning 1048 Column 'b' cannot be null
Warning 1048 Column 'c' cannot be null
Warning 1048 Column 'd' cannot be null
SELECT * FROM t2;
a b c d
11 12 13 14
NULL 22 23 24
31 0 33 34
41 42 0 44
51 52 53 0
NULL 0 0 0
110 120 130 140
NULL 220 230 240
310 0 330 340
410 420 0 440
510 520 530 0
NULL 0 0 0
DELETE FROM t2;
REPLACE INTO t2(a, b, c, d) SELECT * FROM t2_data;
Warnings:
Warning 1048 Column 'b' cannot be null
Warning 1048 Column 'c' cannot be null
Warning 1048 Column 'd' cannot be null
REPLACE INTO v2(a, b, c, d) SELECT a * 10, b * 10, c * 10, d * 10 FROM t2_data;
Warnings:
Warning 1048 Column 'b' cannot be null
Warning 1048 Column 'c' cannot be null
Warning 1048 Column 'd' cannot be null
SELECT * FROM t2;
a b c d
11 12 13 14
NULL 22 23 24
31 0 33 34
41 42 0 44
51 52 53 0
NULL 0 0 0
110 120 130 140
NULL 220 230 240
310 0 330 340
410 420 0 440
510 520 530 0
NULL 0 0 0
DELETE FROM t2;
# - Single nullable column, no values for NOT NULL columns.
# Expect 4 warnings for each statement.
INSERT INTO t1(a) SELECT a FROM t1_data;
Warnings:
Warning 1364 Field 'b' doesn't have a default value
INSERT INTO v1(a) SELECT a * 100 FROM t1_data;
Warnings:
Warning 1423 Field of view 'test.v1' underlying table doesn't have a default value
SELECT * FROM t1;
a b
11 0
NULL 0
31 0
NULL 0
1100 0
NULL 0
3100 0
NULL 0
DELETE FROM t1;
REPLACE INTO t1(a) SELECT a FROM t1_data;
Warnings:
Warning 1364 Field 'b' doesn't have a default value
REPLACE INTO v1(a) SELECT a * 100 FROM t1_data;
Warnings:
Warning 1423 Field of view 'test.v1' underlying table doesn't have a default value
SELECT * FROM t1;
a b
11 0
NULL 0
31 0
NULL 0
1100 0
NULL 0
3100 0
NULL 0
DELETE FROM t1;
INSERT INTO t2(a) SELECT a FROM t2_data;
Warnings:
Warning 1364 Field 'b' doesn't have a default value
Warning 1364 Field 'c' doesn't have a default value
Warning 1364 Field 'd' doesn't have a default value
INSERT INTO v2(a) SELECT a * 100 FROM t2_data;
Warnings:
Warning 1423 Field of view 'test.v2' underlying table doesn't have a default value
Warning 1423 Field of view 'test.v2' underlying table doesn't have a default value
Warning 1423 Field of view 'test.v2' underlying table doesn't have a default value
SELECT * FROM t2;
a b c d
11 0 0 0
NULL 0 0 0
31 0 0 0
41 0 0 0
51 0 0 0
NULL 0 0 0
1100 0 0 0
NULL 0 0 0
3100 0 0 0
4100 0 0 0
5100 0 0 0
NULL 0 0 0
DELETE FROM t2;
REPLACE INTO t2(a) SELECT a FROM t2_data;
Warnings:
Warning 1364 Field 'b' doesn't have a default value
Warning 1364 Field 'c' doesn't have a default value
Warning 1364 Field 'd' doesn't have a default value
REPLACE INTO v2(a) SELECT a * 100 FROM t2_data;
Warnings:
Warning 1423 Field of view 'test.v2' underlying table doesn't have a default value
Warning 1423 Field of view 'test.v2' underlying table doesn't have a default value
Warning 1423 Field of view 'test.v2' underlying table doesn't have a default value
SELECT * FROM t2;
a b c d
11 0 0 0
NULL 0 0 0
31 0 0 0
41 0 0 0
51 0 0 0
NULL 0 0 0
1100 0 0 0
NULL 0 0 0
3100 0 0 0
4100 0 0 0
5100 0 0 0
NULL 0 0 0
DELETE FROM t2;
#------------------------------------------------------------------
# Checking LOAD DATA INFILE ...
#------------------------------------------------------------------
LOAD DATA INFILE '../../std_data/wl6030_2.dat' INTO TABLE t2 FIELDS
TERMINATED BY ',' ENCLOSED BY '"';
Warnings:
Warning 1263 Column set to default value; NULL supplied to NOT NULL column 'b' at row 3
Warning 1263 Column set to default value; NULL supplied to NOT NULL column 'c' at row 4
Warning 1263 Column set to default value; NULL supplied to NOT NULL column 'd' at row 5
Warning 1263 Column set to default value; NULL supplied to NOT NULL column 'b' at row 6
Warning 1263 Column set to default value; NULL supplied to NOT NULL column 'c' at row 6
Warning 1263 Column set to default value; NULL supplied to NOT NULL column 'd' at row 6
Warning 1263 Column set to default value; NULL supplied to NOT NULL column 'b' at row 7
Warning 1263 Column set to default value; NULL supplied to NOT NULL column 'c' at row 8
Warning 1263 Column set to default value; NULL supplied to NOT NULL column 'd' at row 9
SELECT * FROM t2;
a b c d
11 12 13 14
NULL 22 23 24
31 0 33 34
41 42 0 44
51 52 53 0
NULL 0 0 0
NULL 0 73 74
NULL 82 0 84
NULL 92 93 0
DELETE FROM t2;
LOAD DATA INFILE '../../std_data/wl6030_2.dat' INTO TABLE v2 FIELDS
TERMINATED BY ',' ENCLOSED BY '"';
Warnings:
Warning 1263 Column set to default value; NULL supplied to NOT NULL column 'b' at row 3
Warning 1263 Column set to default value; NULL supplied to NOT NULL column 'c' at row 4
Warning 1263 Column set to default value; NULL supplied to NOT NULL column 'd' at row 5
Warning 1263 Column set to default value; NULL supplied to NOT NULL column 'b' at row 6
Warning 1263 Column set to default value; NULL supplied to NOT NULL column 'c' at row 6
Warning 1263 Column set to default value; NULL supplied to NOT NULL column 'd' at row 6
Warning 1263 Column set to default value; NULL supplied to NOT NULL column 'b' at row 7
Warning 1263 Column set to default value; NULL supplied to NOT NULL column 'c' at row 8
Warning 1263 Column set to default value; NULL supplied to NOT NULL column 'd' at row 9
SELECT * FROM t2;
a b c d
11 12 13 14
NULL 22 23 24
31 0 33 34
41 42 0 44
51 52 53 0
NULL 0 0 0
NULL 0 73 74
NULL 82 0 84
NULL 92 93 0
DELETE FROM t2;
###################################################################
# Checking strict SQL_MODE.
###################################################################
SET sql_mode = 'traditional';
Warnings:
Warning 3090 Changing sql mode 'NO_AUTO_CREATE_USER' is deprecated. It will be removed in a future release.
#------------------------------------------------------------------
# Checking INSERT INTO ... VALUES ...
#------------------------------------------------------------------
# - No column list (all columns) + NULL-value for NOT NULL column.
INSERT INTO t1 VALUES (1, NULL);
ERROR 23000: Column 'b' cannot be null
INSERT INTO v1 VALUES (1, NULL);
ERROR 23000: Column 'b' cannot be null
SELECT * FROM t1;
a b
REPLACE INTO t1 VALUES (1, NULL);
ERROR 23000: Column 'b' cannot be null
REPLACE INTO v1 VALUES (1, NULL);
ERROR 23000: Column 'b' cannot be null
SELECT * FROM t1;
a b
INSERT INTO t2 VALUES (1, 2, NULL, 4);
ERROR 23000: Column 'c' cannot be null
INSERT INTO v2 VALUES (1, 2, NULL, 4);
ERROR 23000: Column 'c' cannot be null
SELECT * FROM t2;
a b c d
REPLACE INTO t2 VALUES (1, 2, NULL, 4);
ERROR 23000: Column 'c' cannot be null
REPLACE INTO v2 VALUES (1, 2, NULL, 4);
ERROR 23000: Column 'c' cannot be null
SELECT * FROM t2;
a b c d
# - All columns + NULL-value for NOT NULL column.
INSERT INTO v1(a, b) VALUES (1, NULL);
ERROR 23000: Column 'b' cannot be null
INSERT INTO t1(a, b) VALUES (1, NULL);
ERROR 23000: Column 'b' cannot be null
SELECT * FROM t1;
a b
REPLACE INTO v1(a, b) VALUES (1, NULL);
ERROR 23000: Column 'b' cannot be null
REPLACE INTO t1(a, b) VALUES (1, NULL);
ERROR 23000: Column 'b' cannot be null
SELECT * FROM t1;
a b
INSERT INTO t2(a, b, c, d) VALUES (1, 2, NULL, 4);
ERROR 23000: Column 'c' cannot be null
INSERT INTO v2(a, b, c, d) VALUES (1, 2, NULL, 4);
ERROR 23000: Column 'c' cannot be null
SELECT * FROM t2;
a b c d
REPLACE INTO t2(a, b, c, d) VALUES (1, 2, NULL, 4);
ERROR 23000: Column 'c' cannot be null
REPLACE INTO v2(a, b, c, d) VALUES (1, 2, NULL, 4);
ERROR 23000: Column 'c' cannot be null
SELECT * FROM t2;
a b c d
# - Single nullable column, no values for NOT NULL columns.
INSERT INTO t1(a) VALUES (1);
ERROR HY000: Field 'b' doesn't have a default value
INSERT INTO t1(a) VALUES (2), (3), (4);
ERROR HY000: Field 'b' doesn't have a default value
INSERT INTO v1(a) VALUES (5);
ERROR HY000: Field of view 'test.v1' underlying table doesn't have a default value
INSERT INTO v1(a) VALUES (6), (7), (8);
ERROR HY000: Field of view 'test.v1' underlying table doesn't have a default value
SELECT * FROM t1;
a b
DELETE FROM t1;
REPLACE INTO t1(a) VALUES (1);
ERROR HY000: Field 'b' doesn't have a default value
REPLACE INTO t1(a) VALUES (2), (3), (4);
ERROR HY000: Field 'b' doesn't have a default value
REPLACE INTO v1(a) VALUES (5);
ERROR HY000: Field of view 'test.v1' underlying table doesn't have a default value
REPLACE INTO v1(a) VALUES (6), (7), (8);
ERROR HY000: Field of view 'test.v1' underlying table doesn't have a default value
SELECT * FROM t1;
a b
DELETE FROM t1;
INSERT INTO t2(a) VALUES (1);
ERROR HY000: Field 'b' doesn't have a default value
INSERT INTO t2(a) VALUES (2), (3), (4);
ERROR HY000: Field 'b' doesn't have a default value
INSERT INTO v2(a) VALUES (5);
ERROR HY000: Field of view 'test.v2' underlying table doesn't have a default value
INSERT INTO v2(a) VALUES (6), (7), (8);
ERROR HY000: Field of view 'test.v2' underlying table doesn't have a default value
SELECT * FROM t2;
a b c d
DELETE FROM t2;
REPLACE INTO t2(a) VALUES (1);
ERROR HY000: Field 'b' doesn't have a default value
REPLACE INTO t2(a) VALUES (2), (3), (4);
ERROR HY000: Field 'b' doesn't have a default value
REPLACE INTO v2(a) VALUES (5);
ERROR HY000: Field of view 'test.v2' underlying table doesn't have a default value
REPLACE INTO v2(a) VALUES (6), (7), (8);
ERROR HY000: Field of view 'test.v2' underlying table doesn't have a default value
SELECT * FROM t2;
a b c d
DELETE FROM t2;
#------------------------------------------------------------------
# Checking INSERT INTO ... SELECT ...
#------------------------------------------------------------------
# - No column list (all columns) + NULL-value for NOT NULL column.
INSERT INTO t1 SELECT * FROM t1_data;
ERROR 23000: Column 'b' cannot be null
INSERT INTO v1 SELECT a * 10, b * 10 FROM t1_data;
ERROR 23000: Column 'b' cannot be null
# The following SELECT output should have 4 rows.
# t1's engine is MyISAM, so the transaction can not be fully rolled back.
SELECT * FROM t1;
a b
11 12
NULL 22
110 120
NULL 220
DELETE FROM t1;
REPLACE INTO t1 SELECT * FROM t1_data;
ERROR 23000: Column 'b' cannot be null
REPLACE INTO v1 SELECT a * 10, b * 10 FROM t1_data;
ERROR 23000: Column 'b' cannot be null
# The following SELECT output should have 4 rows.
# t1's engine is MyISAM, so the transaction can not be fully rolled back.
SELECT * FROM t1;
a b
11 12
NULL 22
110 120
NULL 220
DELETE FROM t1;
# - No column list (all columns) + NULL-value for NOT NULL column.
INSERT INTO t2 SELECT * FROM t2_data;
ERROR 23000: Column 'b' cannot be null
INSERT INTO v2 SELECT a * 10, b * 10, c * 10, d * 10 FROM t2_data;
ERROR 23000: Column 'b' cannot be null
# The following SELECT output should have 4 rows.
# t2's engine is MyISAM, so the transaction can not be fully rolled back.
SELECT * FROM t2;
a b c d
11 12 13 14
NULL 22 23 24
110 120 130 140
NULL 220 230 240
DELETE FROM t2;
# - No column list (all columns) + NULL-value for NOT NULL column.
REPLACE INTO t2 SELECT * FROM t2_data;
ERROR 23000: Column 'b' cannot be null
REPLACE INTO v2 SELECT a * 10, b * 10, c * 10, d * 10 FROM t2_data;
ERROR 23000: Column 'b' cannot be null
# The following SELECT output should have 4 rows.
# t2's engine is MyISAM, so the transaction can not be fully rolled back.
SELECT * FROM t2;
a b c d
11 12 13 14
NULL 22 23 24
110 120 130 140
NULL 220 230 240
DELETE FROM t2;
# - All columns + NULL-value for NOT NULL column.
INSERT INTO t1(a, b) SELECT * FROM t1_data;
ERROR 23000: Column 'b' cannot be null
INSERT INTO v1(a, b) SELECT a * 10, b * 10 FROM t1_data;
ERROR 23000: Column 'b' cannot be null
# The following SELECT output should have 4 rows.
# t1's engine is MyISAM, so the transaction can not be fully rolled back.
SELECT * FROM t1;
a b
11 12
NULL 22
110 120
NULL 220
DELETE FROM t1;
REPLACE INTO t1(a, b) SELECT * FROM t1_data;
ERROR 23000: Column 'b' cannot be null
REPLACE INTO v1(a, b) SELECT a * 10, b * 10 FROM t1_data;
ERROR 23000: Column 'b' cannot be null
# The following SELECT output should have 4 rows.
# t1's engine is MyISAM, so the transaction can not be fully rolled back.
SELECT * FROM t1;
a b
11 12
NULL 22
110 120
NULL 220
DELETE FROM t1;
INSERT INTO t2(a, b, c, d) SELECT * FROM t2_data;
ERROR 23000: Column 'b' cannot be null
INSERT INTO v2(a, b, c, d) SELECT a * 10, b * 10, c * 10, d * 10 FROM t2_data;
ERROR 23000: Column 'b' cannot be null
# The following SELECT output should have 4 rows.
# t2's engine is MyISAM, so the transaction can not be fully rolled back.
SELECT * FROM t2;
a b c d
11 12 13 14
NULL 22 23 24
110 120 130 140
NULL 220 230 240
DELETE FROM t2;
REPLACE INTO t2(a, b, c, d) SELECT * FROM t2_data;
ERROR 23000: Column 'b' cannot be null
REPLACE INTO v2(a, b, c, d) SELECT a * 10, b * 10, c * 10, d * 10 FROM t2_data;
ERROR 23000: Column 'b' cannot be null
# The following SELECT output should have 4 rows.
# t2's engine is MyISAM, so the transaction can not be fully rolled back.
SELECT * FROM t2;
a b c d
11 12 13 14
NULL 22 23 24
110 120 130 140
NULL 220 230 240
DELETE FROM t2;
# - Single nullable column, no values for NOT NULL columns.
INSERT INTO t1(a) SELECT a FROM t1_data;
ERROR HY000: Field 'b' doesn't have a default value
INSERT INTO v1(a) SELECT a * 100 FROM t1_data;
ERROR HY000: Field of view 'test.v1' underlying table doesn't have a default value
# The following SELECT output should have 0 rows.
SELECT * FROM t1;
a b
DELETE FROM t1;
REPLACE INTO t1(a) SELECT a FROM t1_data;
ERROR HY000: Field 'b' doesn't have a default value
REPLACE INTO v1(a) SELECT a * 100 FROM t1_data;
ERROR HY000: Field of view 'test.v1' underlying table doesn't have a default value
# The following SELECT output should have 0 rows.
SELECT * FROM t1;
a b
DELETE FROM t1;
INSERT INTO t2(a) SELECT a FROM t2_data;
ERROR HY000: Field 'b' doesn't have a default value
INSERT INTO v2(a) SELECT a * 100 FROM t2_data;
ERROR HY000: Field of view 'test.v2' underlying table doesn't have a default value
# The following SELECT output should have 0 rows.
SELECT * FROM t2;
a b c d
DELETE FROM t2;
REPLACE INTO t2(a) SELECT a FROM t2_data;
ERROR HY000: Field 'b' doesn't have a default value
REPLACE INTO v2(a) SELECT a * 100 FROM t2_data;
ERROR HY000: Field of view 'test.v2' underlying table doesn't have a default value
# The following SELECT output should have 0 rows.
SELECT * FROM t2;
a b c d
DELETE FROM t2;
#------------------------------------------------------------------
# Checking LOAD DATA INFILE ...
#------------------------------------------------------------------
LOAD DATA INFILE '../../std_data/wl6030_2.dat' INTO TABLE t2 FIELDS
TERMINATED BY ',' ENCLOSED BY '"';
ERROR 22004: Column set to default value; NULL supplied to NOT NULL column 'b' at row 3
SELECT * FROM t2;
a b c d
11 12 13 14
NULL 22 23 24
DELETE FROM t2;
LOAD DATA INFILE '../../std_data/wl6030_2.dat' INTO TABLE v2 FIELDS
TERMINATED BY ',' ENCLOSED BY '"';
ERROR 22004: Column set to default value; NULL supplied to NOT NULL column 'b' at row 3
SELECT * FROM t2;
a b c d
11 12 13 14
NULL 22 23 24
SET sql_mode = @sql_mode_saved;
DROP TABLE t1;
DROP TABLE t2;
DROP TABLE t1_data;
DROP TABLE t2_data;
DROP VIEW v1;
DROP VIEW v2;
#------------------------------------------------------------------
# The following tests were suggested by QA
#------------------------------------------------------------------
"Test UPDATE SET inside trigger body"
CREATE TABLE t1(a1 INT NOT NULL);
CREATE TRIGGER t1_bi BEFORE INSERT ON t1
FOR EACH ROW
UPDATE t1 SET NEW.a1 = 1 WHERE a1 IS NULL;
INSERT INTO t1 VALUES (NULL);
ERROR HY000: Can't update table 't1' in stored function/trigger because it is already used by statement which invoked this stored function/trigger.
DROP TRIGGER t1_bi;
DROP TABLE t1;
"Test for recursive trigger"
CREATE TABLE t1(a1 INT NOT NULL);
CREATE TRIGGER t1_bi BEFORE INSERT ON t1
FOR EACH ROW
UPDATE t1 SET NEW.a1 = 1;
INSERT INTO t1 VALUES (NULL);
ERROR HY000: Can't update table 't1' in stored function/trigger because it is already used by statement which invoked this stored function/trigger.
DROP TRIGGER t1_bi;
DROP TABLE t1;
"Test for IFNULL inside trigger body"
CREATE TABLE t1(a1 INT NOT NULL, a2 INT);
INSERT INTO t1 VALUES (1, 2);
CREATE TRIGGER t1_bi BEFORE INSERT ON t1
FOR EACH ROW
BEGIN
SET NEW.a1 = IFNULL(NEW.a1, 10);
SET NEW.a2 = IFNULL(NEW.a2, 20);
END;
|
INSERT INTO t1 VALUES (NULL, 1);
SELECT * FROM t1;
a1 a2
1 2
10 1
DROP TRIGGER t1_bi;
DROP TABLE t1;
"Test for COALESCE Inside trigger body"
CREATE TABLE t1(a1 INT NOT NULL, a2 INT);
INSERT INTO t1 VALUES (1, 1);
CREATE TRIGGER t1_bi BEFORE INSERT ON t1
FOR EACH ROW
BEGIN
SET NEW.a1 = COALESCE(NEW.a1, 5);
SET NEW.a2 = COALESCE(NEW.a2, 7);
END;
|
INSERT INTO t1 VALUES (NULL, 3);
SELECT * FROM t1;
a1 a2
1 1
5 3
DROP TRIGGER t1_bi;
DROP TABLE t1;
"Test for PRIMARY KEY"
CREATE TABLE t1 (a1 INT PRIMARY KEY);
CREATE TRIGGER t1_bi BEFORE INSERT ON t1
FOR EACH ROW
SET NEW.a1 = 2;
INSERT INTO t1 VALUES (NULL);
SELECT * FROM t1;
a1
2
DROP TRIGGER t1_bi;
DROP TABLE t1;
"Test for PRIMARY KEY (constraint violation)"
CREATE TABLE t1 (a1 INT PRIMARY KEY);
CREATE TRIGGER t1_bi BEFORE INSERT ON t1
FOR EACH ROW
SET NEW.a1 = 1;
INSERT INTO t1 VALUES (NULL);
SELECT * FROM t1;
a1
1
INSERT INTO t1 VALUES (NULL);
ERROR 23000: Duplicate entry '1' for key 'PRIMARY'
SELECT * FROM t1;
a1
1
DROP TRIGGER t1_bi;
DROP TABLE t1;
"Test for UNIQUE column"
CREATE TABLE t1(a1 INT UNIQUE);
CREATE TRIGGER t1_bi BEFORE INSERT ON t1
FOR EACH ROW
SET NEW.a1 = 1;
INSERT INTO t1 VALUES (NULL);
SELECT * FROM t1;
a1
1
INSERT INTO t1 VALUES (NULL);
ERROR 23000: Duplicate entry '1' for key 'a1'
SELECT * FROM t1;
a1
1
DROP TRIGGER t1_bi;
DROP TABLE t1;
"Test for date/timestamp datatype"
CREATE TABLE t1(a1 DATE NOT NULL, a2 TIMESTAMP NOT NULL);
CREATE TRIGGER t1_bi BEFORE INSERT ON t1
FOR EACH ROW
SET NEW.a1 = '2012-03-03', NEW.a2 = '2001-01-01 09:01:00';
INSERT INTO t1 VALUES (NULL, NULL);
SELECT * FROM t1;
a1 a2
2012-03-03 2001-01-01 09:01:00
DROP TRIGGER t1_bi;
DROP TABLE t1;
"Test for CHAR/VARCHAR datatype"
CREATE TABLE t1(a1 CHAR(10) NOT NULL, a2 VARCHAR(255) NOT NULL);
CREATE TRIGGER t1_bi BEFORE INSERT ON t1
FOR EACH ROW
SET NEW.a1 = 'MySQL' , NEW.a2 = 'Includes testing of MySQL';
INSERT INTO t1 VALUES (NULL, NULL);
SELECT * FROM t1;
a1 a2
MySQL Includes testing of MySQL
DROP TRIGGER t1_bi;
DROP TABLE t1;
"Test for BINARY/VARBINARY datatype"
CREATE TABLE t1(a1 BINARY(10) NOT NULL, a2 VARBINARY(255) NOT NULL);
CREATE TRIGGER t1_bi BEFORE INSERT ON t1
FOR EACH ROW
SET NEW.a1 = '0x41', NEW.a2 = '0x42';
INSERT INTO t1 VALUES (NULL, NULL);
SELECT * FROM t1;
a1 a2
0x41 0x42
DROP TRIGGER t1_bi;
DROP TABLE t1;
"Test for UNIQUE column‚ constraint violation"
CREATE TABLE t1(a1 INT UNIQUE, a2 INT);
INSERT INTO t1 VALUES (1, 1);
CREATE TRIGGER t1_bi BEFORE INSERT ON t1
FOR EACH ROW
SET NEW.a1 = 1;
INSERT INTO t1 VALUES (NULL, 2);
ERROR 23000: Duplicate entry '1' for key 'a1'
SELECT * FROM t1;
a1 a2
1 1
DROP TRIGGER t1_bi;
DROP TABLE t1;
"Test for UPDATE .. SET .. SELECT"
CREATE TABLE t1(a1 INT NOT NULL, a2 INT);
CREATE TABLE t2(a1 INT NOT NULL, a2 INT);
INSERT INTO t1 VALUES (1, NULL);
INSERT INTO t2 VALUES (1, NULL);
CREATE TRIGGER t1_bu BEFORE UPDATE ON t1
FOR EACH ROW
SET NEW.a1 = 2;
UPDATE t1 SET a1 = (SELECT a2 FROM t2);
SELECT * FROM t1;
a1 a2
2 NULL
DROP TRIGGER t1_bu;
DROP TABLE t1, t2;
"Test for multi table update (across engines)"
CREATE TABLE t1(a1 INT NOT NULL, a2 INT) ENGINE = INNODB;
CREATE TABLE t2(a1 INT NOT NULL, a2 INT) ENGINE = MyISAM;
INSERT INTO t1 VALUES (1, NULL),(2, 2);
INSERT INTO t2 VALUES (1, NULL),(2876543, 2098);
CREATE TRIGGER t1_bu BEFORE UPDATE ON t1
FOR EACH ROW
SET NEW.a1 = 10;
CREATE TRIGGER t2_bu BEFORE UPDATE ON t2
FOR EACH ROW
SET NEW.a1 = 20;
UPDATE t1, t2 SET t1.a1 = NULL , t2.a1 = NULL;
SELECT * FROM t1;
a1 a2
10 NULL
10 2
SELECT * FROM t2;
a1 a2
20 NULL
20 2098
DROP TRIGGER t1_bu;
DROP TRIGGER t2_bu;
DROP TABLE t1, t2;
"Test for update on PRIMARY KEY"
CREATE TABLE t1(a1 INT PRIMARY KEY, a2 INT);
INSERT INTO t1 VALUES (1, 1);
CREATE TRIGGER t1_bu BEFORE UPDATE ON t1
FOR EACH ROW
SET NEW.a1 = 2;
UPDATE t1 SET a1 = NULL;
SELECT * FROM t1;
a1 a2
2 1
DROP TRIGGER t1_bu;
DROP TABLE t1;
"Test for update on UNIQUE column"
CREATE TABLE t1(a1 INT UNIQUE NOT NULL, a2 INT);
INSERT INTO t1 VALUES (1, 1);
CREATE TRIGGER t1_bu BEFORE UPDATE ON t1
FOR EACH ROW
SET NEW.a1 = 2;
UPDATE t1 SET a1 = NULL;
SELECT * FROM t1;
a1 a2
2 1
DROP TRIGGER t1_bu;
DROP TABLE t1;
"INSERT NOT NULL into NOT NULL column if BEFORE INSERT trigger sets it to NULL."
"Test for PRIMARY KEY"
CREATE TABLE t1(a1 INT PRIMARY KEY, a2 INT);
INSERT INTO t1 VALUES (1, 1);
CREATE TRIGGER t1_bi BEFORE INSERT ON t1
FOR EACH ROW
SET NEW.a1 = NULL;
INSERT INTO t1 VALUES (2, 2);
ERROR 23000: Column 'a1' cannot be null
SELECT * FROM t1;
a1 a2
1 1
DROP TRIGGER t1_bi;
DROP TABLE t1;
"Test for UNIQUE column"
CREATE TABLE t1(a1 INT UNIQUE NOT NULL, a2 INT);
INSERT INTO t1 VALUES (1, 1);
CREATE TRIGGER t1_bi BEFORE INSERT ON t1
FOR EACH ROW
SET NEW.a1 = NULL;
INSERT INTO t1 VALUES (2, 2),(3,3);
ERROR 23000: Column 'a1' cannot be null
SELECT * FROM t1;
a1 a2
1 1
DROP TRIGGER t1_bi;
DROP TABLE t1;
SET sql_mode = 'NO_ENGINE_SUBSTITUTION';
Warnings:
Warning 3090 Changing sql mode 'NO_AUTO_CREATE_USER' is deprecated. It will be removed in a future release.
"Test for timestamp"
CREATE TABLE t1(a1 DATE NOT NULL, a2 TIMESTAMP NOT NULL, a3 TIMESTAMP NOT NULL);
CREATE TRIGGER t1_bi BEFORE INSERT ON t1
FOR EACH ROW
SET NEW.a1 = NULL , NEW.a2 = NULL , NEW.a3 = NULL;
INSERT INTO t1 VALUES ('2012-12-12','2012-12-12 12:12:12','1980-01-01 01:01:01');
ERROR 23000: Column 'a1' cannot be null
DROP TRIGGER t1_bi;
DROP TABLE t1;
SET sql_mode = default;
"Test for CHAR/VARCHAR datatype"
CREATE TABLE t1(a1 CHAR(10) NOT NULL, a2 VARCHAR(255) NOT NULL, a3 INT);
CREATE TRIGGER t1_bi BEFORE INSERT ON t1
FOR EACH ROW
SET NEW.a1 = NULL , NEW.a2 = NULL;
INSERT INTO t1 VALUES ('MySQL','MySQL Testing', 1);
ERROR 23000: Column 'a1' cannot be null
DROP TRIGGER t1_bi;
DROP TABLE t1;
"Test for BINARY/VARBINARY datatype"
CREATE TABLE t1(a1 BINARY(10) NOT NULL, a2 VARBINARY(255) NOT NULL, a3 INT);
CREATE TRIGGER t1_bi BEFORE INSERT ON t1
FOR EACH ROW
SET NEW.a1 = NULL , NEW.a2 = NULL;
INSERT INTO t1 VALUES ('0x101','0x101', 1);
ERROR 23000: Column 'a1' cannot be null
SELECT * FROM t1;
a1 a2 a3
DROP TRIGGER t1_bi;
DROP TABLE t1;
"UPDATE NOT NULL into NOT NULL column if BEFORE UPDATE trigger sets it to NULL."
"Test for UPDATE .. SET .. SELECT"
CREATE TABLE t1(a1 INT NOT NULL, a2 INT) ;
CREATE TABLE t2(a1 INT NOT NULL, a2 INT) ;
INSERT INTO t1 VALUES (1, 1);
INSERT INTO t2 VALUES (1, 1);
CREATE TRIGGER t1_bu BEFORE UPDATE ON t1
FOR EACH ROW
SET NEW.a1 = NULL;
UPDATE t1 SET a1 = (SELECT MAX(a2) FROM t2);
ERROR 23000: Column 'a1' cannot be null
SELECT * FROM t1;
a1 a2
1 1
SELECT * FROM t2;
a1 a2
1 1
DROP TRIGGER t1_bu;
DROP TABLE t1, t2;
"Test for multi table update (across engines)"
CREATE TABLE t1(a1 INT NOT NULL, a2 INT) ENGINE = INNODB;
CREATE TABLE t2(a1 INT NOT NULL, a2 INT) ENGINE = MyISAM;
INSERT INTO t1 VALUES (1, NULL),(2, 2);
INSERT INTO t2 VALUES (1, NULL),(2876543, 20111098);
CREATE TRIGGER t1_bu BEFORE UPDATE ON t1
FOR EACH ROW
SET NEW.a1 = NULL;
UPDATE t1, t2 SET t1.a1 = 1 , t2.a1 = 2;
ERROR 23000: Column 'a1' cannot be null
SELECT * FROM t1;
a1 a2
1 NULL
2 2
SELECT * FROM t2;
a1 a2
1 NULL
2876543 20111098
DROP TRIGGER t1_bu;
DROP TABLE t1, t2;
"Test for update on PRIMARY KEY"
CREATE TABLE t1(a1 INT PRIMARY KEY, a2 INT);
INSERT INTO t1 VALUES (1, 1);
CREATE TRIGGER t1_bu BEFORE UPDATE ON t1
FOR EACH ROW
SET NEW.a1 = NULL;
UPDATE t1 SET a1 = 2;
ERROR 23000: Column 'a1' cannot be null
SELECT * FROM t1;
a1 a2
1 1
DROP TRIGGER t1_bu;
DROP TABLE t1;
"Test for update on UNIQUE column"
CREATE TABLE t1(a1 INT UNIQUE NOT NULL, a2 INT);
INSERT INTO t1 VALUES (1, 1),(2, 2);
CREATE TRIGGER t1_bu BEFORE UPDATE ON t1
FOR EACH ROW
SET NEW.a1 = NULL;
UPDATE t1 SET a1 = 3;
ERROR 23000: Column 'a1' cannot be null
SELECT * FROM t1;
a1 a2
1 1
2 2
DROP TRIGGER t1_bu;
DROP TABLE t1;
SET @sql_mode_saved = @@sql_mode;
SET sql_mode='';
Warnings:
Warning 3090 Changing sql mode 'NO_AUTO_CREATE_USER' is deprecated. It will be removed in a future release.
CREATE TABLE t1(a INT, b INT NOT NULL);
INSERT INTO t1(a) VALUES (1);
Warnings:
Warning 1364 Field 'b' doesn't have a default value
SHOW WARNINGS;
Level Code Message
Warning 1364 Field 'b' doesn't have a default value
CREATE TRIGGER t1_trg_after_del AFTER DELETE ON t1 FOR EACH ROW SET @a := 1;
INSERT INTO t1(a) VALUES (1);
Warnings:
Warning 1364 Field 'b' doesn't have a default value
SHOW WARNINGS;
Level Code Message
Warning 1364 Field 'b' doesn't have a default value
SET sql_mode = @sql_mode_saved;
Warnings:
Warning 3090 Changing sql mode 'NO_AUTO_CREATE_USER' is deprecated. It will be removed in a future release.
DROP TABLE t1;
SET @sql_mode_saved = @@sql_mode;
SET sql_mode='';
CREATE TABLE t1(a INT NOT NULL, b INT NOT NULL);
INSERT INTO t1(a) VALUES (1);
Warnings:
Warning 1364 Field 'b' doesn't have a default value
SHOW WARNINGS;
Level Code Message
Warning 1364 Field 'b' doesn't have a default value
CREATE TRIGGER t1_trg_before_ins BEFORE INSERT ON t1 FOR EACH ROW SET NEW.a=2;
INSERT INTO t1(a) VALUES (1);
Warnings:
Warning 1364 Field 'b' doesn't have a default value
SHOW WARNINGS;
Level Code Message
Warning 1364 Field 'b' doesn't have a default value
SET sql_mode = @sql_mode_saved;
DROP TABLE t1;