How to disable all Foreign Key Constraint in SQL Server Database - SQL Server / TSQL Tutorial Part 77

Scenario: 

You are working as SQL Server developer, You need to provide the scripts to disable all the Foreign Key Constraint in SQL Server database.  This might be scenario where you need to load one time data and you are ok if data violate referential integrity.

Solution:

Let's get the list of Foreign Key Constraints from a SQL Server Database before we generate the disable script.

--Get List of Foreign Key Constraints if Enabled or Disabled
USE YourDatabaseName
GO
Select
    Schema_name(Schema_id) as SchemaName,
    object_name(Parent_object_id) as TableName,
    name as ForeignKeyConstraintName,
CaseWhen Is_disabled=1 Then'No'
ELSE'Yes'Endas IsEnabled
from sys.foreign_keys

How to Check if Foreign Key Constraint is Enabled or Disabled in SQL Server

Now let's generate script to Disable Foreign Key Constraint in SQL Server Database

USE YourdatabaseName
go
-- Drop Foreign Key Constraints Script 
SELECTdistinct'ALTER TABLE '
+ '['+ Schema_name(FK.schema_id) 
+ '].['+ OBJECT_NAME(FK.parent_object_id) 
+ ']'+ ' NOCHECK  CONSTRAINT '
+ '[' + FK.name + ']'AS DisableConstraintQuery
FROM   sys.foreign_keys AS FK
where is_disabled=0

How to generate Script to Disable All Foreign Key Constraints in SQL Server Database