Sql Server Query to Find All Foreign Keys References of Particular Table

Introduction:  In this article I have explained How to get all foreign key reference of any particular table with full details i.e. referenced table with schema, referring table with schema, referenced column, referring column, foreign key constraint name in sql server. I.e. listing all child tables containing primary key column of parent table as a foreign key.

In previous articles i explained the Difference between primary key and foreign key in sql server and Find al lprimary and foreign key constraints on each or any table in database and Drop or truncate parent table by dropping all foreign key constraints and Declare and use table variables in sql server and Multiple sqlqueries to find all user defined functions (udf’s) in a database

Implementation: Lets create a parent table 'tbEmployee' having Primary Key column 'EmployeeId'  and two child tables 'tbEmployeeExperience' and 'tbEmployeeQualification' having EmployeeId as foreign key as.

 -- Create a parent table using following script

CREATE TABLE tbEmployee

(

            EmployeeId INT IDENTITY(1,1) NOT NULL PRIMARY KEY,

            EmployeeName VARCHAR(100)

);

GO

-- Create a child table that refer above parent table 'tbEmployee' using following script

CREATE TABLE tbEmployeeExperience

(

            CompanyName VARCHAR(200),

            TotalMonths INT,

            EmployeeId INT FOREIGN KEY REFERENCES tbEmployee(EmployeeId),

);

GO

-- Create another child table that refer above parent table 'tbEmployee' using following script

CREATE TABLE tbEmployeQualification

(

            QualificationName VARCHAR(200),

            EmployeeId INT FOREIGN KEY REFERENCES tbEmployee(EmployeeId),

);

Query to find all foreign keys reference of particular table

SELECT SCM.name [Schema], OBJECT_NAME (FK.referenced_object_id) 'Referenced Table',

COL_NAME(FK.referenced_object_id, FKC.referenced_column_id) 'Referenced Column',

SCM.name [Schema], OBJECT_NAME(FK.parent_object_id) 'Referring Table',

COL_NAME(FK.parent_object_id,FKC.parent_column_id) 'Referring Column',

FK.name 'Foreign Key Name'

FROM sys.foreign_keys AS FK

INNER JOIN sys.foreign_key_columns AS FKC ON FKC.constraint_object_id = FK.object_id

INNER JOIN sys.schemas SCM ON FK.schema_id=SCM.schema_id

WHERE FK.referenced_object_id = OBJECT_ID('dbo.tbEmployee')

Result:

Schema	Referenced Table	Referenced Column	Schema	Referring Table	Referring Column	Foreign Key Name
dbo	tbEmployee	EmployeeId	dbo	tbEmployeeExperience	EmployeeId	FK__tbEmploye__Emplo__00750D23
dbo	tbEmployee	EmployeeId	dbo	tbEmployeQualification	EmployeeId	FK__tbEmploye__Emplo__025D5595

Now over to you:

A blog is nothing without reader's feedback and comments. So please provide your valuable feedback so that i can make this blog better and If you like my work; you can appreciate by leaving your comments, hitting Facebook like button, following on Google+, Twitter, Linkedin and Pinterest, stumbling my posts on stumble upon and subscribing for receiving free updates directly to your inbox . Stay tuned and stay connected for more technical updates. 

• Tweet
• Share
• Share
• Share

Related Post