Hi,
I am running again into the problem with setting up a Foreign Key constraint (very frustrating). Here is the example:
Table 1. VENDORS
This table has unique field VENDOR_ID
Table 2. PRODUCTS
This table has field VENDOR_ID. I want to set up constraint as following:
ALTER TABLE [dbo].[products] WITH CHECK ADD CONSTRAINT [FK_products_vendor] FOREIGN KEY([vendor_id])
REFERENCES [dbo].[vendors] ([vendor_id])
ON UPDATE CASCADE
I get message:
Introducing FOREIGN KEY <name> may cause cycles or multiple cascade paths. Specify ON UPDATE NO ACTION
But if I specify ON UPDATE NO ACTION what good is this constraint? I don't see a problem of the multiple cascade paths here. What am I missing? How do you get around this issue with SQL Server?
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