Transaction and cascade problem
| От | Glenn MacGregor |
|---|---|
| Тема | Transaction and cascade problem |
| Дата | |
| Msg-id | 00ad01c1895a$c3d5df80$4d00a8c0@catamount обсуждение исходный текст |
| Ответы |
Re: Transaction and cascade problem
|
| Список | pgsql-sql |
Hi All,
I have postgres 7.1 set up with two tables (groups, users). groups has 2 columns name, groupid where id is the primary key autoincrement and name is unique. users has 3 columns name, userid, groupid. I have a constraint on users which says that groupid must exists in the group table. I also have a cascade delete on the groups table to delete any users that are in the group I am removing. I regular (no transaction) mode everything works fine. When I start a transaction and I add a group to the group table, then delete it before a commit or rollback I get the following error:
ERROR: triggered data change violation on relation "groups"
After that the transaction must be rolledback. Any clues?
Thanks
Glenn
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