From 8710133250ec58bb9572bce0d3e13e232b60d17a Mon Sep 17 00:00:00 2001
From: alecpl <alec@alec.pl>
Date: Mon, 15 Nov 2010 09:03:22 -0500
Subject: [PATCH] - Fix error in MSSQL DDL scripts (#1487112): use trigger instead of foreign key constraint
---
SQL/mssql.initial.sql | 9 ++++++---
1 files changed, 6 insertions(+), 3 deletions(-)
diff --git a/SQL/mssql.initial.sql b/SQL/mssql.initial.sql
index 3678858..823d1b3 100644
--- a/SQL/mssql.initial.sql
+++ b/SQL/mssql.initial.sql
@@ -291,8 +291,11 @@
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
--
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