SQL 服务器删除具有临时表的特殊模式下的所有表

Question

我正在尝试删除具有时间 tables 的数据库方案。不是通过谷歌搜索找到的现有脚本，支持时间 tables.

有人做过吗？

该方案有许多时间 table，具有许多依赖性约束。因此，当我尝试放弃该方案时，它会抱怨依赖性。基本上我正在寻找一个存储过程或遍历所有数据库对象并一个一个删除的东西。

创建示例的脚本 tables

USE [master];
GO

CREATE DATABASE [TestDb];
GO

USE [TestDb];
GO

CREATE SCHEMA [TestScheme];
GO

SET ANSI_NULLS ON;
GO
SET QUOTED_IDENTIFIER ON;
GO

CREATE TABLE [TestScheme].[Country]
(
    [CountryCode] [char](2) NOT NULL, 
    [Country] [varchar](60) NOT NULL, 
    [ValidFrom] [datetime2](2) GENERATED ALWAYS AS ROW START NOT NULL, 
    [ValidTo] [datetime2](2) GENERATED ALWAYS AS ROW END NOT NULL, 

    CONSTRAINT [PK_TestScheme_Country_CountryCode] 
        PRIMARY KEY CLUSTERED([CountryCode] ASC) 
                WITH (PAD_INDEX = ON, STATISTICS_NORECOMPUTE = OFF, 
                      IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, 
                      ALLOW_PAGE_LOCKS = ON, FILLFACTOR = 95) ON [PRIMARY], 
    PERIOD FOR SYSTEM_TIME([ValidFrom], [ValidTo])
) ON [PRIMARY] 
     WITH (SYSTEM_VERSIONING = ON (HISTORY_TABLE = [TestScheme].[CountryHistory]));
GO

SET ANSI_NULLS ON;
GO
SET QUOTED_IDENTIFIER ON;
GO

CREATE TABLE [TestScheme].[Address]
(
     [AddressId] [int] IDENTITY(1, 1) NOT NULL, 
     [City] [varchar](100) NOT NULL, 
     [CountryCode] [char](2) NOT NULL, 
     [ValidFrom] [datetime2](7) GENERATED ALWAYS AS ROW START NOT NULL, 
     [ValidTo] [datetime2](7) GENERATED ALWAYS AS ROW END NOT NULL, 

     CONSTRAINT [PK_TestScheme_Address_AddressId] 
         PRIMARY KEY CLUSTERED([AddressId] ASC) 
                 WITH (PAD_INDEX = ON, STATISTICS_NORECOMPUTE = OFF, 
                       IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, 
                       ALLOW_PAGE_LOCKS = ON, FILLFACTOR = 100) ON [PRIMARY], 
     PERIOD FOR SYSTEM_TIME([ValidFrom], [ValidTo])
)
ON [PRIMARY] 
   WITH (SYSTEM_VERSIONING = ON(HISTORY_TABLE = [TestScheme].[AddressHistory]));
GO

ALTER TABLE [TestScheme].[Address] WITH CHECK
    ADD CONSTRAINT [FK_TestScheme_CountryCode] 
        FOREIGN KEY([CountryCode]) REFERENCES [TestScheme].[Country]([CountryCode]);
GO

ALTER TABLE [TestScheme].[Address] CHECK CONSTRAINT [FK_TestScheme_CountryCode];
GO

要删除方案的查询：

USE [TestDb];
GO

DROP SCHEMA [TestScheme];
GO

要删除的查询table:

USE [TestDb]
GO

ALTER TABLE [TestScheme].[Country] SET (SYSTEM_VERSIONING = OFF)
GO

IF EXISTS (SELECT * FROM sys.objects 
           WHERE object_id = OBJECT_ID(N'[TestScheme].[Country]') AND type in (N'U'))
    DROP TABLE [TestScheme].[Country]
GO

IF EXISTS (SELECT * FROM sys.objects 
           WHERE object_id = OBJECT_ID(N'[TestScheme].[CountryHistory]') AND type in (N'U'))
    DROP TABLE [TestScheme].[CountryHistory]
GO

所以问题是有很多数据库对象，我真的不想创建一个巨大的脚本来一个一个地删除。

谢谢！

Answer 1

谢谢大家，下面是我创建的脚本，它对我有用。

USE TestDb;
GO
DECLARE @SchemeName varchar(50)= 'TestScheme';
DECLARE @DatabaseName varchar(50)= 'TestDb';
DECLARE @sql nvarchar(max)= '';

/*Removing versioning on temporal tables*/
WITH selectedTables
     AS (SELECT concat('[', @DatabaseName, '].[', @SchemeName, '].[', name, ']') AS TableName
         FROM SYS.TABLES    WHERE history_table_id IS NOT NULL AND  SCHEMA_NAME(schema_id) = @SchemeName)
     SELECT @sql = COALESCE(@sql, N'') + 'ALTER TABLE   ' + TableName + '   SET ( SYSTEM_VERSIONING = OFF  );'
     FROM selectedTables;

SELECT @sql;
EXEC sp_executesql @sql;

/*Remove constraints*/
SET @sql = N'';
SELECT @sql = COALESCE(@sql, N'') + N'ALTER TABLE ' + QUOTENAME(s.name) + N'.' + QUOTENAME(t.name) + N' DROP CONSTRAINT ' + QUOTENAME(c.name) + ';'
FROM SYS.OBJECTS AS c   INNER JOIN  SYS.TABLES AS t ON c.parent_object_id = t.[object_id]
     INNER JOIN SYS.SCHEMAS AS s    ON t.[schema_id] = s.[schema_id]
WHERE c.[type] IN( 'D', 'C', 'F', 'PK', 'UQ' ) AND  s.name = @SchemeName
ORDER BY c.[type];

SELECT @sql;
EXEC sp_executesql @sql;

/*Delete Tables*/
SET @sql = N'';
SELECT @sql =   COALESCE(@sql, N'') + N'DROP TABLE ['+@SchemeName+'].' + QUOTENAME(TABLE_NAME) + N';' + CHAR(13)
FROM INFORMATION_SCHEMA.TABLES  WHERE TABLE_SCHEMA = @SchemeName    AND TABLE_TYPE = 'BASE TABLE';

SELECT @sql
EXEC sp_executesql @sql;

/*Drop scheme*/
SET @sql = N'';
SELECT @sql =   COALESCE(@sql, N'') + N'DROP SCHEMA IF EXISTS ' + @SchemeName + ';' + CHAR(13);

SELECT @sql
EXEC sp_executesql @sql;
GO

再次感谢！

SQL 服务器删除具有临时表的特殊模式下的所有表

SQL Server delete all tables under special schema with temporal tables

database

sql-server

temporal-tables