Question

我有一个包含30个表的数据库。

我希望看到每个表与该数据库之间的关系。

我不知道如何获取所有数据库表关系。

Answer 1

您可以从INFORMATION_SCHEMA表中获取约束信息。以下脚本将为您提供主键和外键和表的列表。

WITH    PrimaryTable
          AS (
               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'
             )
    SELECT PK.TABLE_NAME AS PK_Table
           ,PT.COLUMN_NAME AS PK_Column
           ,FK.TABLE_NAME AS FK_Table
           ,CU.COLUMN_NAME AS FK_Column
           ,C.CONSTRAINT_NAME AS 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 PrimaryTable AS PT
            ON PT.TABLE_NAME = PK.TABLE_NAME

如何从sql server获取所有表关系

1 个答案: