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How to list constraints of a table
11 January,2016 by Tom Collins
To list SQL Server table constraints you’ll need to use the INFORMATION_SCHEMA.TABLE_CONSTRAINTS catalogs view. Avoid using the sysobjects view , which is now deprecated.
The query will return the CONSTRAINT_NAME & CONSTRAINT_TYPE
SELECT CONSTRAINT_NAME, CONSTRAINT_TYPE FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS WHERE TABLE_SCHEMA = 'MY_SCHEMA' AND TABLE_NAME='MY_TABLE';
Read More on SQL Server table Constraints
Script to DROP CONSTRAINT and ADD CONSTRAINT for all CHECK CONSTRAINTS
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Modify a SQL CHECK CONSTRAINT - SQL Server
List Foreign Keys referencing tables in SQL Server
Author: Tom Collins (http://www.sqlserver-dba.com)
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