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Sql Server Query to find all foreign keys referring to particular table

Introduction:  In this article I have explained How to get all foreign keys that refers to a particular table in sql server. I.e. listing all tables whose primary key column is used as a foreign key in our table. We can get full details i.e. referenced table with schema, referring table with schema, referenced column, referring column, foreign key constraint name etc


Implementation: Let’s create a table 'tbEmployee' having a primary key column 'EmployeeId' and two columns DeptId and CategoryId as foreign key. DeptId refers to DepartmentId of 'tbDepartment' Table and CategoryId referes to StaffCategoryId column of 'tbStaffCategory' table.


GO
-- Create a table 'tbEmployee' using following script
CREATE TABLE  tbEmployee
(
            EmployeeId          INT IDENTITY(1,1) NOT NULL PRIMARY KEY,
            EmployeeName   VARCHAR(100),
            DeptId                  INT FOREIGN KEY REFERENCES tbDepartment(DepartmentId),
            CategotyId           INT FOREIGN KEY REFERENCES tbStaffCategory(StaffCategoryId),
);


GO
-- Create another table 'tbDepartment' using following script
CREATE TABLE tbDepartment
(                                  
            DepartmentId INT IDENTITY(1,1) NOT NULL PRIMARY KEY,
            DepartmentName VARCHAR(100),
);

GO
-- Create another table 'tbStaffCategory' using following script
CREATE TABLE tbStaffCategory
(                                  
            StaffCategoryId INT IDENTITY(1,1) NOT NULL PRIMARY KEY,
            StaffCategoryName VARCHAR(100),
);

Query to find all foreign keys referring to particular table

SELECT SCM.name [Schema], OBJECT_NAME(FK.parent_object_id) 'Referenced Table',
COL_NAME(FK.parent_object_id,FKC.parent_column_id) 'Referenced Column' ,
SCM.name [Schema], OBJECT_NAME(FK.referenced_object_id) 'Referring Table',
COL_NAME(FK.referenced_object_id, FKC.referenced_column_id) 'Referring Column',
FK.name 'Foreign Key Name'
FROM sys.foreign_keys FK INNER JOIN sys.schemas SCM on FK.schema_id=SCM.schema_id
INNER JOIN sys.foreign_key_columns AS FKC ON FKC.constraint_object_id = FK.object_id
WHERE FK.parent_object_id = OBJECT_ID('dbo.tbEmployee')

Result:
Schema
Referenced Table
Referenced Column
Schema
Referring Table
Referring Column
Foreign Key Name
dbo
tbEmployee
DeptId
dbo
tbDepartment
DepartmentId
FK__tbEmploye__DeptI__40058253
dbo
tbEmployee
CategotyId
dbo
tbStaffCategory
StaffCategoryId
FK__tbEmploye__Categ__40F9A68C

 Now over to you:
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