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Re: ndb-7.5.5 : Foreignkey contraint failure returning incomplete error message
Posted by: Martin Sköld
Date: November 30, 2017 08:40AM

Hi!

Seems fixed in later versions, can't find exact matching bug fix, but there
are a couple in the change log.
I tried this in 7.6:

mysql> create table t1 (
-> a int not null,
-> primary key using hash (a)
-> ) engine ndb;
Query OK, 0 rows affected (0,52 sec)

mysql> insert into t1 values (1),(2);
Query OK, 2 rows affected (0,02 sec)
Records: 2 Duplicates: 0 Warnings: 0

mysql> create table t2 (
-> a int not null,
-> b int not null,
-> c int not null,
-> primary key using hash (a),
-> key xbc (b,c),
-> foreign key fk1 (b) references t1 (a) on delete set null
-> ) engine ndb;
Query OK, 0 rows affected (1,03 sec)

mysql> insert into t2 (a,b,c) values (1,1,11),(2,2,21),(3,2,22);
Query OK, 3 rows affected (0,00 sec)
Records: 3 Duplicates: 0 Warnings: 0

mysql> insert into t2 (a,b,c) values (4,3,33);
ERROR 1452 (23000): Cannot add or update a child row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `fk1` FOREIGN KEY (`b`) REFERENCES `t1` (`a`) ON DELETE SET NULL ON UPDATE NO ACTION)



Edited 2 time(s). Last edit at 11/30/2017 08:51AM by Martin Sköld.

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