SQL 複製 PRINT '*** Setting ANSI_WARNINGS ON'; GO SET ANSI_WARNINGS ON; GO PRINT 'Testing NULL in aggregate'; GO SELECT a, SUM(b) FROM T1 GROUP BY a; GO PRINT 'Testing String Overflow in INSERT'; GO INSERT INTO T1 VALUES (3, 3, 'Text string longer than 20 characters'); GO...
You can view the status of this option in the view sys.database_automatic_tuning_options. FORCE_LAST_GOOD_PLAN = { DEFAULT | ON | OFF } DEFAULT The default value for SQL Server is OFF. ON The Database Engine automatically forces the last known good plan on the Transact-SQL queries ...
Specifies ISO compliant behavior of the Equals (=) and Not Equal To (<>) comparison operators when they are used withNULLvalues in SQL Server. SET ANSI_NULLS ON- Evaluates both{expression} = NULLand{expression} <> NULLasFalseif the value of{expression}isNULL. This behavior is ANSI-complia...
You can view the status of this option in the view sys.database_automatic_tuning_options. FORCE_LAST_GOOD_PLAN = { DEFAULT | ON | OFF } DEFAULT The default value for SQL Server is OFF. ON The Database Engine automatically forces the last known good plan on the Transact-SQL queries ...
当我们设置SET NOCOUNT ON,其比特值(bit value)是512,来看看@@OPTIONS值的变化,现在的值为5496+512=6008.运行如下的代码: SETNOCOUNTONDECLARE@optionsINTSELECT@options = @@OPTIONSPRINT@optionsIF( (1 & @options) = 1 )PRINT'DISABLE_DEF_CNST_CHK'IF( (2 & @options) = 2 )PRINT'IMPLICIT_TRANSACTIO...
Adding in a unique id via derived column. Adding SSIS will require downtime ? ADO NET Source has failed to acquire the connection {---} with the following error message: "Could not create a managed connection manager." Agent Job should call next step if SP returns value 1. Job should...
SQL Copy DECLARE @p Point; SET @p.X = @p.X + 1.1; SELECT @p; GO Learn more about creating the Point UDT referenced in this example and the following examples in the article Creating User-Defined Types. H. Assign a value to a user-defined type variable by invoking a method of ...
voidSetValue(stringconfigString,intindex) 参数 configString 类型:System. . :: . .String The configuration string to use for the log provider. index 类型:System. . :: . .Int32 The index in the ArrayList returned fromGetEnumerableValuespointing to the log entry to be modified. ...
Transact-SQL syntax conventions Syntax syntaxsqlCopy SETTEXTSIZE{ number } Arguments number The length ofvarchar(max),nvarchar(max),varbinary(max),text,ntext, orimagedata, in bytes.numberis an integer with a maximum value of2147483647(2 GB). A value of-1indicates unlimited size. A value of...
Assume that you have thetarget recovery timeof a database set to a nonzero value in Microsoft SQL Server 2012,2014 or 2016. If an assertion occurs during the checkpoint process, the assertion causes a lease timeout on the database, and you receive the following dump file: ...