Re-Trust Untrusted Foreign Keys and Constraints
This script will attempt to re-trust untrusted foreign keys and will report counts of successes and failures.
2013-06-17 (first published: 2013-05-30)
1,130 reads
Foreign Keys (FK)
2013-04-24
2,062 reads
Rename Foreign Key Constraints
Rename Foreign Key Constraints in a consistent manner. Ideal for preventing constraint errors during code promotion.
2018-04-13 (first published: 2013-03-19)
1,351 reads
2012-10-23
2,159 reads
2012-10-12 (first published: 2012-09-10)
1,790 reads
2012-05-18
2,989 reads
2011-10-25
2,466 reads
Check if Constraint is enabled or disabled
This is a script to find all constraints and check if they are enabled or disabled.
2011-11-10 (first published: 2011-10-12)
7,435 reads
Holy Foreign Keys and Indexes
This article shows an interesting issue with foreign keys and how they are aligned with the base tables in SQL 2005 SP 4.
2011-10-10
5,786 reads
SQL Server Foreign Key Update and Delete Rules
Foreign key constraints are an integral part of SQL Server database design. These are used to maintain integrity among related data in different tables. While implementing update and delete operations on values in the parent table (referenced table with primary key) we have to consider the impact on related values in the child table. SQL Server provides different rules for managing the effect of updates and deletes on child table values. How can these rules be used effectively without threatening the relational integrity?
2011-05-03
4,940 reads
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Question of the Day
Adding Defaults
I have a table, called dbo.logger, in SQL Server 2022. I decide to add two new columns to this table with this code.
ALTER TABLE dbo.logger ADD CreateDate DATETIME CONSTRAINT dfGetDate DEFAULT GETDATE() GO ALTER TABLE dbo.logger ADD ModifyDate DATETIME DEFAULT dfGetDate GOWhat happens when I run these two batches? See possible answers