Sql server 2008 在数据库级别设置ANSI_null，而在表级别设置ANSI_null

我已经为我的sql server 2008 R2生成了仅架构脚本，以下是其中的一部分：-

USE [master]
GO
/****** Object:  Database [****]    Script Date: 03/25/2015 12:17:09 ******/
CREATE DATABASE [****] ON  PRIMARY 
( NAME = N'TMS', FILENAME = N'D:\Microsoft SQL Server\MSSQL10_50.MSSQLSERVER\MSSQL\DATA\****.mdf' , SIZE = 11264KB , MAXSIZE = UNLIMITED, FILEGROWTH = 1024KB )
 LOG ON 
( NAME = N'TMS_log', FILENAME = N'L:\Microsoft SQL Server\MSSQL10_50.MSSQLSERVER\MSSQL\Data\****.ldf' , SIZE = 4672KB , MAXSIZE = 2048GB , FILEGROWTH = 10%)
GO
ALTER DATABASE [****] SET COMPATIBILITY_LEVEL = 100
GO
IF (1 = FULLTEXTSERVICEPROPERTY('IsFullTextInstalled'))
begin
EXEC [****].[dbo].[sp_fulltext_database] @action = 'enable'
end
GO
ALTER DATABASE [****] SET ANSI_NULL_DEFAULT OFF
GO
ALTER DATABASE [****] SET ANSI_NULLS OFF
GO
ALTER DATABASE [****] SET ANSI_PADDING OFF
GO
ALTER DATABASE [****] SET ANSI_WARNINGS OFF
GO
ALTER DATABASE [****] SET ARITHABORT OFF
GO
ALTER DATABASE [****] SET AUTO_CLOSE OFF
GO
ALTER DATABASE [****] SET AUTO_CREATE_STATISTICS ON
GO
ALTER DATABASE [****] SET AUTO_SHRINK OFF
GO
ALTER DATABASE [****] SET AUTO_UPDATE_STATISTICS ON
GO
ALTER DATABASE [****] SET CURSOR_CLOSE_ON_COMMIT OFF
GO
ALTER DATABASE [****] SET CURSOR_DEFAULT  GLOBAL
GO
ALTER DATABASE [****] SET CONCAT_NULL_YIELDS_NULL OFF
GO
ALTER DATABASE [****] SET NUMERIC_ROUNDABORT OFF
GO
ALTER DATABASE [****] SET QUOTED_IDENTIFIER OFF
GO
ALTER DATABASE [****] SET RECURSIVE_TRIGGERS OFF
GO
ALTER DATABASE [****] SET  DISABLE_BROKER
GO
ALTER DATABASE [****] SET AUTO_UPDATE_STATISTICS_ASYNC OFF
GO
ALTER DATABASE [****] SET DATE_CORRELATION_OPTIMIZATION OFF
GO
ALTER DATABASE [****] SET TRUSTWORTHY OFF
GO
ALTER DATABASE [****] SET ALLOW_SNAPSHOT_ISOLATION OFF
GO
ALTER DATABASE [****] SET PARAMETERIZATION SIMPLE
GO
ALTER DATABASE [****] SET READ_COMMITTED_SNAPSHOT OFF
GO
ALTER DATABASE [****] SET HONOR_BROKER_PRIORITY OFF
GO
ALTER DATABASE [****] SET  READ_WRITE
GO
ALTER DATABASE [****] SET RECOVERY FULL
GO
ALTER DATABASE [****] SET  MULTI_USER
GO
ALTER DATABASE [****] SET PAGE_VERIFY CHECKSUM
GO
ALTER DATABASE [****] SET DB_CHAINING OFF
GO
USE [****]
GO
/****** Object:  User [AD-ITSERVICES\TMSDB.user]    Script Date: 03/25/2015 12:17:09 ******/
CREATE USER [AD-ITSERVICES\test.user] FOR LOGIN [****\test.user] WITH DEFAULT_SCHEMA=[dbo]
GO
/****** Object:  Table [dbo].[TechnologyTypes]    Script Date: 03/25/2015 12:17:12 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE TABLE [dbo].[TechnologyTypes](
    [AssetTypeID] [int] IDENTITY(1,1) NOT NULL,
    [Name] [nvarchar](50) NOT NULL,
    [IncludedInSearch] [bit] NULL,
 CONSTRAINT [PK_AssetType] PRIMARY KEY CLUSTERED 
(
    [AssetTypeID] ASC
)WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY],
 CONSTRAINT [IX_AssetType] UNIQUE NONCLUSTERED 
(
    [Name] ASC
)WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]
) ON [PRIMARY]
GO
/****** Object:  Table [dbo].[TechnologyStatus]    Script Date: 03/25/2015 12:17:12 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON

现在我不明白我为什么要说这句话：-

ALTER DATABASE [****] SET ANSI_NULL_DEFAULT OFF
GO
ALTER DATABASE [****] SET ANSI_NULLS OFF

但在创建任何sql表时，我将得到：-

SET ANSI_NULLS ON

---

那么，最终的结果是什么；ANSI_NULLS是否等于关闭或打开？据我所知，“

SET ANSI_NULLS

”将在数据库级别关闭，除非我在表级别将其设置为打开？这是正确的吗？为什么我在数据库级别将

ANSI_NULLs

设置为off？

您在创建表之前确实将ANSI_NULLs设置为开。@那么为什么在脚本的开头会提到“ALTER database[*****]set ANSI_NULLs off”，而在创建表之前会提到“set ANSI_NULLs ON”？我的问题是这两种说法之间的区别是什么？区别在于顺序。ANSI_NULLS不是表设置。我们无法告诉您为什么脚本有一行。为什么要将ANSI_NULLS设置为两次？@Blam正如我提到的，我使用SSMS 2008 r2生成了这个脚本，但我没有编写它，我右键单击数据库，选择生成一个仅用于模式的脚本。。。所以我问为什么我设置了两次ANSI_NULLS？？？@Blam，但其中一个状态使用alter database指定为“alter database[***]SET ANSI_NULLS OFF”，而另一个不使用alter database指定为“SET ANSI_NULLS ON”？那么目的是什么呢？