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8639e28808
One can create table with the same name for `field` and `table` `check` constraint. For example: `create table t(a int check(a>0), constraint a check(a>10));` But when inserting new rows same error is always raised. For example with ```insert into t values (-1);``` and ```insert into t values (10);``` same error `ER_CONSTRAINT_FAILED` is obtained and it is not clear which constraint is violated. This patch solve this error so that in case if field constraint is violated the first parameter in the error message is `table.field_name` and if table constraint is violated the first parameter in error message is `constraint_name`.
224 lines
7.4 KiB
Text
224 lines
7.4 KiB
Text
set @save_check_constraint=@@check_constraint_checks;
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create table t1 (a int check(a>10), b int check (b > 20), constraint `min` check (a+b > 100), constraint `max` check (a+b <500)) engine=myisam;
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show create table t1;
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Table Create Table
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t1 CREATE TABLE `t1` (
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`a` int(11) DEFAULT NULL CHECK (`a` > 10),
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`b` int(11) DEFAULT NULL CHECK (`b` > 20),
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CONSTRAINT `min` CHECK (`a` + `b` > 100),
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CONSTRAINT `max` CHECK (`a` + `b` < 500)
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) ENGINE=MyISAM DEFAULT CHARSET=latin1
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insert into t1 values (100,100);
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insert into t1 values (1,1);
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ERROR 23000: CONSTRAINT `t1.a` failed for `test`.`t1`
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insert into t1 values (20,1);
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ERROR 23000: CONSTRAINT `t1.b` failed for `test`.`t1`
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insert into t1 values (20,30);
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ERROR 23000: CONSTRAINT `min` failed for `test`.`t1`
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insert into t1 values (500,500);
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ERROR 23000: CONSTRAINT `max` failed for `test`.`t1`
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insert into t1 values (101,101),(102,102),(600,600),(103,103);
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ERROR 23000: CONSTRAINT `max` failed for `test`.`t1`
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select * from t1;
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a b
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100 100
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101 101
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102 102
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truncate table t1;
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insert ignore into t1 values (101,101),(102,102),(600,600),(103,103);
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Warnings:
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Warning 4025 CONSTRAINT `max` failed for `test`.`t1`
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select * from t1;
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a b
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101 101
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102 102
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103 103
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set check_constraint_checks=0;
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truncate table t1;
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insert into t1 values (101,101),(102,102),(600,600),(103,103);
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select * from t1;
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a b
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101 101
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102 102
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600 600
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103 103
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set check_constraint_checks=@save_check_constraint;
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alter table t1 add c int default 0 check (c < 10);
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ERROR 23000: CONSTRAINT `max` failed for table
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set check_constraint_checks=0;
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alter table t1 add c int default 0 check (c < 10);
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alter table t1 add check (a+b+c < 500);
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set check_constraint_checks=@save_check_constraint;
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show create table t1;
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Table Create Table
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t1 CREATE TABLE `t1` (
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`a` int(11) DEFAULT NULL CHECK (`a` > 10),
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`b` int(11) DEFAULT NULL CHECK (`b` > 20),
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`c` int(11) DEFAULT 0 CHECK (`c` < 10),
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CONSTRAINT `min` CHECK (`a` + `b` > 100),
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CONSTRAINT `max` CHECK (`a` + `b` < 500),
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CONSTRAINT `CONSTRAINT_1` CHECK (`a` + `b` + `c` < 500)
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) ENGINE=MyISAM DEFAULT CHARSET=latin1
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insert into t1 values(105,105,105);
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ERROR 23000: CONSTRAINT `t1.c` failed for `test`.`t1`
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insert into t1 values(249,249,9);
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ERROR 23000: CONSTRAINT `CONSTRAINT_1` failed for `test`.`t1`
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insert into t1 values(105,105,9);
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select * from t1;
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a b c
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101 101 0
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102 102 0
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600 600 0
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103 103 0
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105 105 9
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create table t2 like t1;
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show create table t2;
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Table Create Table
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t2 CREATE TABLE `t2` (
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`a` int(11) DEFAULT NULL CHECK (`a` > 10),
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`b` int(11) DEFAULT NULL CHECK (`b` > 20),
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`c` int(11) DEFAULT 0 CHECK (`c` < 10),
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CONSTRAINT `min` CHECK (`a` + `b` > 100),
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CONSTRAINT `max` CHECK (`a` + `b` < 500),
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CONSTRAINT `CONSTRAINT_1` CHECK (`a` + `b` + `c` < 500)
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) ENGINE=MyISAM DEFAULT CHARSET=latin1
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alter table t2 drop constraint c;
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ERROR 42000: Can't DROP CONSTRAINT `c`; check that it exists
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alter table t2 drop constraint if exists c;
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Warnings:
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Note 1091 Can't DROP CONSTRAINT `c`; check that it exists
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alter table t2 drop constraint min;
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show create table t2;
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Table Create Table
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t2 CREATE TABLE `t2` (
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`a` int(11) DEFAULT NULL CHECK (`a` > 10),
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`b` int(11) DEFAULT NULL CHECK (`b` > 20),
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`c` int(11) DEFAULT 0 CHECK (`c` < 10),
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CONSTRAINT `max` CHECK (`a` + `b` < 500),
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CONSTRAINT `CONSTRAINT_1` CHECK (`a` + `b` + `c` < 500)
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) ENGINE=MyISAM DEFAULT CHARSET=latin1
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drop table t1,t2;
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create or replace table t1 (a int, b int, constraint check (a>b));
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show create table t1;
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Table Create Table
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t1 CREATE TABLE `t1` (
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`a` int(11) DEFAULT NULL,
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`b` int(11) DEFAULT NULL,
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CONSTRAINT `CONSTRAINT_1` CHECK (`a` > `b`)
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) ENGINE=MyISAM DEFAULT CHARSET=latin1
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create or replace table t1 (a int, b int,
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constraint CONSTRAINT_1 check (a>1),
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constraint check (b>1));
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show create table t1;
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Table Create Table
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t1 CREATE TABLE `t1` (
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`a` int(11) DEFAULT NULL,
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`b` int(11) DEFAULT NULL,
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CONSTRAINT `CONSTRAINT_1` CHECK (`a` > 1),
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CONSTRAINT `CONSTRAINT_2` CHECK (`b` > 1)
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) ENGINE=MyISAM DEFAULT CHARSET=latin1
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create or replace table t1 (a int, b int,
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constraint CONSTRAINT_1 check (a>1),
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constraint check (b>1),
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constraint CONSTRAINT_2 check (a>b));
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show create table t1;
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Table Create Table
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t1 CREATE TABLE `t1` (
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`a` int(11) DEFAULT NULL,
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`b` int(11) DEFAULT NULL,
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CONSTRAINT `CONSTRAINT_1` CHECK (`a` > 1),
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CONSTRAINT `CONSTRAINT_3` CHECK (`b` > 1),
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CONSTRAINT `CONSTRAINT_2` CHECK (`a` > `b`)
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) ENGINE=MyISAM DEFAULT CHARSET=latin1
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drop table t1;
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create table t1(c1 int, c2 int as (c1 + 1), check (c2 > 2));
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insert into t1(c1) values(1);
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ERROR 23000: CONSTRAINT `CONSTRAINT_1` failed for `test`.`t1`
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insert into t1(c1) values(2);
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drop table t1;
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create or replace table t1( c1 int auto_increment primary key, check( c1 > 0 or c1 is null ) );
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ERROR HY000: Function or expression 'AUTO_INCREMENT' cannot be used in the CHECK clause of `c1`
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create table t1 (a int check (@b in (select user from mysql.user)));
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ERROR HY000: Function or expression 'select ...' cannot be used in the CHECK clause of `a`
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create table t1 (a int check (a > @b));
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ERROR HY000: Function or expression '@b' cannot be used in the CHECK clause of `a`
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create table t1 (a int check (a = 1));
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insert t1 values (1);
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insert t1 values (2);
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ERROR 23000: CONSTRAINT `t1.a` failed for `test`.`t1`
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insert t1 values (NULL);
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select * from t1;
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a
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1
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NULL
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drop table t1;
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create table t1 (id int auto_increment primary key, datecol datetime, check (datecol>'0001-01-01 00:00:00'));
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insert into t1 (datecol) values (now());
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insert into t1 (datecol) values (now());
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drop table t1;
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CREATE TABLE t1 (
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EmployeeID SMALLINT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
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FirstName VARCHAR(30) NOT NULL CHECK (CHAR_LENGTH(FirstName > 2))
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);
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INSERT INTO t1 VALUES (NULL, 'Ken');
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ERROR 22007: Truncated incorrect DOUBLE value: 'Ken'
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SHOW WARNINGS;
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Level Code Message
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Error 1292 Truncated incorrect DOUBLE value: 'Ken'
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Error 4025 CONSTRAINT `t1.FirstName` failed for `test`.`t1`
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INSERT INTO t1 VALUES (NULL, 'Ken'),(NULL, 'Brian');
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ERROR 22007: Truncated incorrect DOUBLE value: 'Ken'
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SHOW WARNINGS;
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Level Code Message
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Error 1292 Truncated incorrect DOUBLE value: 'Ken'
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Error 4025 CONSTRAINT `t1.FirstName` failed for `test`.`t1`
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INSERT IGNORE INTO t1 VALUES (NULL, 'Ken');
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Warnings:
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Warning 1292 Truncated incorrect DOUBLE value: 'Ken'
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INSERT IGNORE INTO t1 VALUES (NULL, 'Ken'),(NULL, 'Brian');
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Warnings:
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Warning 1292 Truncated incorrect DOUBLE value: 'Ken'
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Warning 1292 Truncated incorrect DOUBLE value: 'Brian'
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set sql_mode="";
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INSERT INTO t1 VALUES (NULL, 'Ken');
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Warnings:
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Warning 1292 Truncated incorrect DOUBLE value: 'Ken'
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INSERT INTO t1 VALUES (NULL, 'Ken'),(NULL, 'Brian');
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Warnings:
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Warning 1292 Truncated incorrect DOUBLE value: 'Ken'
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Warning 1292 Truncated incorrect DOUBLE value: 'Brian'
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set sql_mode=default;
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select * from t1;
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EmployeeID FirstName
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1 Ken
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2 Ken
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3 Brian
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4 Ken
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5 Ken
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6 Brian
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drop table t1;
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#
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# MDEV-16630: Ambiguous error message when check constraint
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# matches table name
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#
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use test;
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drop table if exists t;
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create table t(a int, b int check(b>0),
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constraint b check(a<b), constraint a check(a>0),
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constraint x check (a>10));
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show create table t;
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Table Create Table
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t CREATE TABLE `t` (
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`a` int(11) DEFAULT NULL,
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`b` int(11) DEFAULT NULL CHECK (`b` > 0),
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CONSTRAINT `b` CHECK (`a` < `b`),
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CONSTRAINT `a` CHECK (`a` > 0),
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CONSTRAINT `x` CHECK (`a` > 10)
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) ENGINE=MyISAM DEFAULT CHARSET=latin1
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# Field constraint 'b' will fail
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insert into t values (-1, 0);
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ERROR 23000: CONSTRAINT `t.b` failed for `test`.`t`
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# Table constraint 'b' will fail
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insert into t values (1,1);
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ERROR 23000: CONSTRAINT `b` failed for `test`.`t`
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drop table t;
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