SQL server 2008 R2算术溢出错误将数字转换为数据类型数字

Question

我有一个令人困惑的错误,我无法理解SQL Server 2008 R2.

但是,当我在本地服务器(也是SQL Server 2008 R2)上尝试相同的请求时,一切正常.

所以这是提出问题的请求:

select cast(cast(1.260 as numeric(13,3)) as numeric(10,2))

我还添加了一些查询结果,指出每个服务器的环境:

在本地服务器上:

---------------------------------------
1.26

(1 row(s) affected)

Microsoft SQL Server 2008 R2 (RTM) - 10.50.1617.0 (X64) 
    Apr 22 2011 19:23:43 
    Copyright (c) Microsoft Corporation
    Standard Edition (64-bit) on Windows NT 6.1 <X64> (Build 7601: Service Pack 1)

ARITHABORT
---------------------------------------------------------------------------------------------
1

(1 row(s) affected)

ARITHIGNORE
---------------------------------------------------------------------------------------------
NULL

(1 row(s) affected)

ANSI_WARNINGS
---------------------------------------------------------------------------------------------
1

(1 row(s) affected)

在远程服务器上:

消息8115,级别16,状态7,行1
算术溢出错误将数字转换为数据类型数字.

Microsoft SQL Server 2008 R2 (SP1) - 10.50.2500.0 (X64) 
    Jun 17 2011 00:54:03 
    Copyright (c) Microsoft Corporation
    Enterprise Edition (64-bit) on Windows NT 6.0 <X64> (Build 6002: Service Pack 2) (Hypervisor)
(1 row(s) affected)

ARITHABORT
------------------------------------------------------------------------------------------------------------
1

(1 row(s) affected)

ARITHIGNORE
------------------------------------------------------------------------------------------------------------
NULL

(1 row(s) affected)

ANSI_WARNINGS
------------------------------------------------------------------------------------------------------------
1

(1 row(s) affected)

我的问题是如何重现远程服务器上出现的问题.如您所见,两个服务器上的参数ARITH ...和ANSI_ ..是相同的.是否有关于SQL Server上的那种错误的配置？

Answer 1

该NUMERIC_ROUNDABORT选项设置为ON

当SET NUMERIC_ROUNDABORT为ON时,在表达式中发生精度损失后会生成错误.当OFF时,精度损失不会产生错误消息,结果会四舍五入到存储结果的列或变量的精度.

通常这是OFF,因为ON索引视图等可能会失败.

我永远不会改变这一点.

SET NOCOUNT ON;
GO
PRINT 'ON'
set NUMERIC_ROUNDABORT ON;
select cast(cast(1.260 as numeric(13,3)) as numeric(10,2));
GO
PRINT 'OFF'
set NUMERIC_ROUNDABORT OFF;
select cast(cast(1.260 as numeric(13,3)) as numeric(10,2));
GO

给

ON

---------------------------------------
Msg 8115, Level 16, State 7, Line 3
Arithmetic overflow error converting numeric to data type numeric.

OFF

---------------------------------------
1.26