Method 1: INFORMATION_SCHEMA
SELECT
DISTINCT
Constraint_Name AS [Constraint],
Table_Schema AS [Schema],
Table_Name AS [TableName]
FROM INFORMATION_SCHEMA.KEY_COLUMN_USAGE
GO
Method 2: sys.objects
SELECT OBJECT_NAME(OBJECT_ID) AS NameofConstraint,
SCHEMA_NAME(schema_id) AS SchemaName,
OBJECT_NAME(parent_object_id) AS TableName,
type_desc AS ConstraintType
FROM sys.objects
WHERE type_desc IN ('FOREIGN_KEY_CONSTRAINT','PRIMARY_KEY_CONSTRAINT')
GOPRIMARY KEY 와 FOREIGN KEY 를 전부 뽑아주는 쿼리 들이다.
METHOD 2 가 성능이 제일 좋고, 결과값도 많다.
