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) 翻译:刘琼滨谢雪妮许雅莉赖慧芳 译文: 该系列 本文是阶梯系列的一部分:t-sql的阶梯...
•您最多只能有10级别的 IIF 子句嵌套。 摘要 CASE 表达式和 IIF 函数使您可以将表达式逻辑放在 TSQL 代码中, 以根据表达式的计算结果更改代码的结果。通过使用 IIF 函数和 CASE 表达式支持的比较表达式, 您可以根据比较表达式的计算结果为 TRUE 或 FALSE 来执行不同的代码块。CASE 表达式和 IIF 函数为您提供编...
result --- 1<2 3.3.5 IIF函数 Microsoft SQL Server和SQLite提供了一个IIF(boolean_expression, true_value, false_value)函数,如果表达式boolean_expression的结果为真,返回表达式true_value的值,否则返回表达式false_value的值。例如: -- Microsoft SQL Server和SQLite SELECT IIF(1<2, '1<2', '1>=2')...
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 ...
IIf(Logical_Expression, Expression1 [HINT <hints>], Expression2 [HINT <hints>]) Arguments The IIf function takes three arguments: iif(<condition>, <then branch>, <else branch>). Logical_Expression A condition that evaluates to true (1) or false (0). It must be a valid Multidimensional...
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 serve...
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 serve...
IIf(Logical_Expression, Expression1 [HINT <hints>], Expression2 [HINT <hints>]) Arguments The IIf function takes three arguments: iif(<condition>, <then branch>, <else branch>). Logical_Expression A condition that evaluates to true (1) or false (0). It must be a valid Multidimensional...
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 serve...
FunctionDescription ASCIIReturns the ASCII value for the specific character CHARReturns the character based on the ASCII code CHARINDEXReturns the position of a substring in a string CONCATAdds two or more strings together Concat with +Adds two or more strings together ...