在SQL Server 2008中，如何查詢具有對特定表列的外鍵引用的表？

Question

在MSSQL 2008中，如何查詢具有指向特定表列的外鍵引用的表？

比方說，我有所謂的「ID」。 我怎樣才能找到一個int列的表稱爲審計所有在我的數據庫有外鍵的表爲Audit.ID？

Answer 1

SELECT 
K_Table = FK.TABLE_NAME, 
FK_Column = CU.COLUMN_NAME, 
PK_Table = PK.TABLE_NAME, 
PK_Column = PT.COLUMN_NAME, 
Constraint_Name = C.CONSTRAINT_NAME 
FROM INFORMATION_SCHEMA.REFERENTIAL_CONSTRAINTS C 
INNER JOIN INFORMATION_SCHEMA.TABLE_CONSTRAINTS FK ON C.CONSTRAINT_NAME = FK.CONSTRAINT_NAME 
INNER JOIN INFORMATION_SCHEMA.TABLE_CONSTRAINTS PK ON C.UNIQUE_CONSTRAINT_NAME = PK.CONSTRAINT_NAME 
INNER JOIN INFORMATION_SCHEMA.KEY_COLUMN_USAGE CU ON C.CONSTRAINT_NAME = CU.CONSTRAINT_NAME 
INNER JOIN (
SELECT i1.TABLE_NAME, i2.COLUMN_NAME 
FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS i1 
INNER JOIN INFORMATION_SCHEMA.KEY_COLUMN_USAGE i2 ON i1.CONSTRAINT_NAME = i2.CONSTRAINT_NAME 
WHERE i1.CONSTRAINT_TYPE = 'PRIMARY KEY' 
) PT ON PT.TABLE_NAME = PK.TABLE_NAME 
---- optional: 
ORDER BY 
1,2,3,4 
WHERE PK.TABLE_NAME='something'WHERE FK.TABLE_NAME='something' 
WHERE PK.TABLE_NAME IN ('one_thing', 'another') 
WHERE FK.TABLE_NAME IN ('one_thing', 'another') 

Answer 2

declare @keys table 
( 
    ForeignKey varchar(100), 
    TableName varchar(100), 
    ColumnName varchar(100), 
    ReferenceTableName varchar(100), 
    ReferenceColumnName varchar(100) 
) 
insert @keys 
SELECT f.name AS ForeignKey, 
TableName = OBJECT_NAME(f.parent_object_id), 
ColumnName = COL_NAME(fc.parent_object_id, 
fc.parent_column_id), 
OBJECT_NAME (f.referenced_object_id) AS ReferenceTableName, 
COL_NAME(fc.referenced_object_id, 
fc.referenced_column_id) AS ReferenceColumnName 
FROM sys.foreign_keys AS f 
INNER JOIN sys.foreign_key_columns AS fc 
ON f.OBJECT_ID = fc.constraint_object_id 

select * from @Keys where TableName='X' and ColumnName='Y'