在上面的例子中,根据不同的条件(condition1和condition2),CASE语句会返回不同的值('A'或'B')。然后,WHERE子句中的IN条件将选择具有这些返回值的客户。 SQL Server提供了丰富的功能和工具来支持开发和管理数据库。以下是一些相关的腾讯云产品和链接,可以帮助您更好地使用SQL Server: ...
在SQL Server中,CASE和EXISTS是两个常用的关键字,用于在WHERE子句中进行条件判断和子查询。 CASE语句: CASE语句是一种条件表达式,用于根据不同的条件返回不同的结果。它的语法如下: 代码语言:txt 复制 CASE WHEN condition1 THEN result1 WHEN condition2 THEN result2 ... ELSE result END 其中,condition1、cond...
It will return only married, unless the parameter is set to false and then it will ignore the condition and bring both. Luis C. General Disclaimer: Are you seriously taking the advice and code from someone from the internet without testing it? Do you at least understand it? Or can it ea...
TheCASEexpression evaluates its conditions sequentially and stops with the first condition whose condition is satisfied. In some situations, an expression is evaluated before aCASEexpression receives the results of the expression as its input. Errors in evaluating these expressions are possible. Aggregate...
For a list of control-of-flow methods, see Control-of-Flow Language (Transact-SQL). The CASE expression evaluates its conditions sequentially and stops with the first condition whose condition is satisfied. In some situations, an expression is evaluated before a CASE expression receives the ...
For a list of control-of-flow methods, see Control-of-Flow Language (Transact-SQL). The CASE expression evaluates its conditions sequentially and stops with the first condition whose condition is satisfied. In some situations, an expression is evaluated before a CASE expression receives the ...
For a list of control-of-flow methods, see Control-of-Flow Language (Transact-SQL). The CASE expression evaluates its conditions sequentially and stops with the first condition whose condition is satisfied. In some situations, an expression is evaluated before a CASE expression receives the ...
TheCASEexpression evaluates its conditions sequentially and stops with the first condition whose condition is satisfied. In some situations, an expression is evaluated before aCASEexpression receives the results of the expression as its input. Errors in evaluating these expressions are possible. Aggregate...
TheCASEexpression evaluates its conditions sequentially and stops with the first condition whose condition is satisfied. In some situations, an expression is evaluated before aCASEexpression receives the results of the expression as its input. Errors in evaluating these expressions are possible. Aggregate...
For a list of control-of-flow methods, see Control-of-Flow Language (Transact-SQL). The CASE expression evaluates its conditions sequentially and stops with the first condition whose condition is satisfied. In some situations, an expression is evaluated before a CASE expression receives the ...