sql - 从依赖表中删除数据

Question

SQL Server 2008 中是否有一个查询会同时删除所有依赖表以及所选表中的数据？

很抱歉没有详细说明这个问题。我知道级联删除可以正常工作，但我的应用程序连接到第 3 方 SQL Server 数据库。我有一些插入到目标表和依赖表中的单元测试。不幸的是，目标表上的约束不是删除级联时的约束，我无法创建它们或让它们创建。我正在寻找一种遍历依赖项并按正确顺序删除数据的通用方法。

Answer 1

由于存在外键关系，因此以下脚本可以让您开始模仿级联删除。

DECLARE @TableName VARCHAR(32)
DECLARE @PrimaryKey VARCHAR(32)

SET @TableName = 'MasterTable'
SET @PrimaryKey = '1'

SELECT  'DELETE FROM '
        + fks.name + '.' + fkt.name
        + ' WHERE '
        + pc.name 
        + ' = '
        + @PrimaryKey
        , fko.name as [FK Name]
        , fk.constraint_column_id as [Col Order]
        , fks.name + '.' + fkt.name as [FK table]
        , pc.name as [FK column]
        , rcs.name + '.' + rct.name as [PK table]
        , rc.name as [PK column]
FROM    sys.foreign_key_columns fk
        -- FK columns
        INNER JOIN sys.columns pc ON fk.parent_object_id = pc.object_id
                                     AND fk.parent_column_id = pc.column_id
        INNER JOIN sys.objects fkt ON pc.object_id = fkt.object_id
        INNER JOIN sys.schemas as fks ON fks.schema_id = fkt.schema_id
        -- referenced PK columns
        INNER JOIN sys.columns rc ON fk.referenced_object_id = rc.object_id
                                     AND fk.referenced_column_id = rc.column_id
        INNER JOIN sys.objects rct ON rc.object_id = rct.object_id
        INNER JOIN sys.schemas as rcs ON rcs.schema_id = rct.schema_id
        -- foreign key constraint name
        INNER JOIN sys.objects fko ON fk.constraint_object_id = fko.object_id
WHERE   rct.Name = @TableName