SQL Sao chép SELECT [Result] = IIF( 45 > 30, NULL, NULL ); The result of this statement is an error.C. IIF with NULL parametersSQL Sao chép DECLARE @P INT = NULL, @S INT = NULL; SELECT [Result] = IIF( 45 > 30, @P, @S ); Here is the result set....
The result of this statement is an error. C. IIF with NULL parameters SQL DECLARE@PINT=NULL, @SINT=NULL;SELECT[Result] =IIF(45>30, @P, @S ); Here's the result set. Result --- NULL Next steps CASE (Transact-SQL) CHOOSE (
For more information, seeIIF Function Query Hints in SQL Server Analysis Services 2008andExecution Plans and Plan Hints for MDX IIF Function and CASE Statement. Examples The following query shows a simple use ofIIFinside a calculated measure to return one of two different string values when the ...
The result of this statement is an error. C. IIF with NULL parameters SQL DECLARE@PINT=NULL, @SINT=NULL;SELECT[Result] =IIF(45>30, @P, @S ); Here's the result set. Result --- NULL Next steps CASE (Transact-SQL) CHOOSE (
EAGER and STRICT are mutually exclusive in the hint; they can be used in the same IIF(,,) over different expressions. For more information, see IIF Function Query Hints in SQL Server Analysis Services 2008 and Execution Plans and Plan Hints for MDX IIF Function and CASE Statement. Examples ...
The result of this statement is an error. C. IIF with NULL parameters DECLARE @P INT = NULL, @S INT = NULL; SELECT IIF ( 45 > 30, @p, @s ) AS Result; Here is the result set. Result --- NULL (1 row(s) affected) See Also...
但不知何故，Microsoft query不会接受以下语句：派生表就是一个由查询结果生成的临时表。他是在外部查询...
The result of this statement is an error. C. IIF with NULL parameters DECLARE @P INT = NULL, @S INT = NULL; SELECT IIF ( 45 > 30, @p, @s ) AS Result; Here is the result set. Result --- NULL (1 row(s) affected) See Also...
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从他的阶梯到t - sql DML,Gregory Larsen涵盖了t - sql语言的更高级的方面,如子查询。 There are times where you need to write a single TSQL statement that is able to return different TSQL expressions based on the evaluation of another expression. When you need this kind of functionality you ca...