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- Fix error in MSSQL DDL scripts (#1487112): use trigger instead of foreign key constraint

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alecpl
2010-11-15 14:03:22 +00:00
parent 3e54812afa
commit 8710133250
3 changed files with 11 additions and 6 deletions
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9
SQL/mssql.initial.sql
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@@ -291,8 +291,11 @@ ALTER TABLE [dbo].[contactgroupmembers] ADD CONSTRAINT [FK_contactgroupmembers_c
ON DELETE CASCADE ON UPDATE CASCADE
GO
ALTER TABLE [dbo].[contactgroupmembers] ADD CONSTRAINT [FK_contactgroupmembers_contact_id]
FOREIGN KEY ([contact_id]) REFERENCES [dbo].[contacts] ([contact_id])
ON DELETE CASCADE ON UPDATE CASCADE
-- Use trigger instead of foreign key (#1487112)
-- "Introducing FOREIGN KEY constraint ... may cause cycles or multiple cascade paths."
CREATE TRIGGER [contact_delete_member] ON [dbo].[contacts]
AFTER DELETE AS
DELETE FROM [dbo].[contactgroupmembers]
WHERE [contact_id] IN (SELECT [contact_id] FROM deleted)
GO