Информация о внешних ключах в SQL Server

Question

Как получить имя, ссылочную схему и таблицу для всех внешних ключей в базе данных SQL Sever?

Answer 1

Старая школа

SELECT 
    [ForeignKey] = f.name 
, [TableName] = OBJECT_NAME(f.parent_object_id), COL_NAME(fc.parent_object_id,fc.parent_column_id) 
, [ReferenceTableName] = OBJECT_NAME (f.referenced_object_id) 
, ReferenceColumnName = COL_NAME(fc.referenced_object_id, fc.referenced_column_id) 
FROM 
sys.foreign_keys AS f 
INNER JOIN sys.foreign_key_columns AS fc ON f.OBJECT_ID = fc.constraint_object_id 

Новая школа:

От

http://msdn.microsoft.com/en-us/library/aa175805%28SQL.80%29.aspx

SELECT 
     KCU1.CONSTRAINT_SCHEMA as 'CONSTRAINT_SCHEMA_1' 
    , KCU1.CONSTRAINT_NAME AS 'FK_CONSTRAINT_NAME' 
    , KCU1.TABLE_SCHEMA as 'TABLE_SCHEMA_1' 
    , KCU1.TABLE_NAME AS 'FK_TABLE_NAME' 
    , KCU1.COLUMN_NAME AS 'FK_COLUMN_NAME' 
    , KCU1.ORDINAL_POSITION AS 'FK_ORDINAL_POSITION' 
    , '----------' as Sep1 
    , KCU2.CONSTRAINT_NAME AS 'UQ_CONSTRAINT_NAME' 
    , KCU2.CONSTRAINT_SCHEMA as 'CONSTRAINT_SCHEMA_2' 
    , KCU1.TABLE_SCHEMA as 'TABLE_SCHEMA_2' 
    , KCU2.TABLE_NAME AS 'UQ_TABLE_NAME' 
    , KCU2.COLUMN_NAME AS 'UQ_COLUMN_NAME' 
    , KCU2.ORDINAL_POSITION AS 'UQ_ORDINAL_POSITION' 
FROM INFORMATION_SCHEMA.REFERENTIAL_CONSTRAINTS RC 
JOIN INFORMATION_SCHEMA.KEY_COLUMN_USAGE KCU1 
ON KCU1.CONSTRAINT_CATALOG = RC.CONSTRAINT_CATALOG 
    AND KCU1.CONSTRAINT_SCHEMA = RC.CONSTRAINT_SCHEMA 
    AND KCU1.CONSTRAINT_NAME = RC.CONSTRAINT_NAME 
JOIN INFORMATION_SCHEMA.KEY_COLUMN_USAGE KCU2 
ON KCU2.CONSTRAINT_CATALOG = 
RC.UNIQUE_CONSTRAINT_CATALOG 
    AND KCU2.CONSTRAINT_SCHEMA = 
RC.UNIQUE_CONSTRAINT_SCHEMA 
    AND KCU2.CONSTRAINT_NAME = 
RC.UNIQUE_CONSTRAINT_NAME 
    AND KCU2.ORDINAL_POSITION = KCU1.ORDINAL_POSITION