From 8710133250ec58bb9572bce0d3e13e232b60d17a Mon Sep 17 00:00:00 2001
From: alecpl <alec@alec.pl>
Date: Mon, 15 Nov 2010 14:03:22 +0000
Subject: - Fix error in MSSQL DDL scripts (#1487112): use trigger instead of
 foreign key constraint

---
 SQL/mssql.initial.sql | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

(limited to 'SQL/mssql.initial.sql')

diff --git a/SQL/mssql.initial.sql b/SQL/mssql.initial.sql
index 36788585f..823d1b3ae 100644
--- a/SQL/mssql.initial.sql
+++ b/SQL/mssql.initial.sql
@@ -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
 
-- 
cgit v1.2.3

