在SQL Server中,可以使用IIF函数来替代CASE语句。IIF函数是一个内置的逻辑函数,用于根据条件返回不同的值。 IIF函数的语法如下: IIF(condition, value_if_true, value_if_false) 其中,condition是一个逻辑表达式,如果为真,则返回value_if_true;如果为假,则返回value_if_false。 使用IIF函数可以简化复杂的CASE语句...
The IIF logical function Returns one of two values, depending on whether the Boolean expression evaluates to true or false.
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 following query shows a simple use of IIF inside a calculated measure to return one of two different string values whe...
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 fact that IIF is translated into CASE also has an impact on other aspects of the behavior of this function. Since CASE expressions can be nested only up to the level of 10, IIF statements can also be nested only up to the maximum level of 10. Also, IIF is remoted to other serv...
Thomas Kejser and I are doing some work to produce the SQL Server 2008 Analysis Services Performance Guide. Among a bunch of other things, it discusses the IIF function. But because I recently mentioned MDX query hints in a recent podcast, I wanted to get this out quickly....
t-sql的楼梯:超越基本级别6:使用案例表达式和IIF函数 源自:Stairway to T-SQL: Beyond The Basics Level 6: Using the CASE Expression and IIF Functionhttp://www.sqlservercentral.com/articles/Stairway+Series/108723/ 作者Gregory Larsen,2016/4/20(第一次出版:2014/04/09) ...
The fact that IIF is translated into CASE also has an impact on other aspects of the behavior of this function. Since CASE expressions can be nested only up to the level of 10, IIF statements can also be nested only up to the maximum level of 10. Also, IIF is remoted to other serv...
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 can use the CASE expression or IIF function to meet this requirement. In this article ...
The fact that IIF is translated into CASE also has an impact on other aspects of the behavior of this function. Since CASE expressions can be nested only up to the level of 10, IIF statements can also be nested only up to the maximum level of 10. Also, IIF is remoted to other serv...