T-SQL语法问题-在CASE语句中使用OR [英] T-SQL SYNTAX ISSUE - using OR in CASE statement

问题描述

我想构建一个包含以下逻辑的CASE语句，但是sql编译器不喜欢我的语句中的"OR":

i would like to build a CASE statement that incorporates the following logic, but the sql compiler does not like the 'OR' in my statement:

CASE expression
WHEN expression1 OR expression2
THEN <yadda yadda>
ELSE <yadda yadda>
END

下面的更具体的代码:

CASE @var1
WHEN '99' OR '22'   
            THEN        
                (CASE @var2
                WHEN 'All' THEN col1
                ELSE @var2
                END)
END

推荐答案

DECLARE @Variable INT;
SET @Variable = 1;

SELECT
    CASE
        WHEN @Variable = 1 OR @Variable = 2 THEN 'It is 1 or 2'
        WHEN @Variable = 3 THEN 'It is 3'
        ELSE 'It is not 1, 2, or 3'
    END AS [SomeField]

案例，或和表达式

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