CASE WHEN是SQL中特有的查询关键字,这个组合在PowerBI中是没有的。 白茶在之前介绍PowerBI中IF的时候曾经说过,SWITCH底层逻辑和IF是一样的,只不过是写法上更加的优雅。但是在SQL中比SWITCH更好用的,是CASE WHEN。 语法 CASE WHEN语法一共有两种。 语法1: 代码语言:txt AI代码解释 SELECT 列(*), (CASE 列名...
sum(case format(saledate, 'yyyyMM') when '201903' then amount else 0 end) "三月", sum(case format(saledate, 'yyyyMM') when '201904' then amount else 0 end) "四月", sum(case format(saledate, 'yyyyMM') when '201905' then amount else 0 end) "五月", sum(case format(saledate, ...
case when ((nextscore1 IS NOT NULL) AND (score1 - nextscore1 < 0.1)) then sco...
SQL CASE Examples The following SQL goes through conditions and returns a value when the first condition is met: ExampleGet your own SQL Server SELECTOrderID, Quantity, CASE WHENQuantity >30THEN'The quantity is greater than 30' WHENQuantity =30THEN'The quantity is 30' ...
1、示例1:case when 函数-多行转多列 2、示例2:concat函数-多行转单列 1)、concat函数 2)、concat_ws函数 3)、collect_list函数 4)、collect_set函数 5)、实现多行转单列 3、示例3:union函数-多列转多行 1)、union函数 2)、union all函数 3)、实现多列转多行 4、示例:explode函数-单列转多行 本...
WHEN 1 THEN'Salaried Employee'WHEN 0 THEN'Contractor'ELSE'N/A'END FROM [HumanResources].[Employee] The downside of the simple CASE statement is that you can only check for equality. The IIF function With SQL Server 2012, theIIF functionwas introduced into the T-SQL language. The syntax is...
SQL Server WHERE condition with a CASEThe issue is that you cannot use an alias in theWHERE...
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Which ClickHouse server version to use 22.3.2.2-lts Expected behavior when I remove the alias ‘b’,the SQL execute successfully,so I want to know whether alias can not be identified in case-when-then and multiIf clause or not alias can be used in cond clause, ...
'WHEN MATCHED' cannot appear more than once in a 'UPDATE' clause of a MERGE statement. "EXECUTE AT" with Dynamic Linked Server Name "explicit value must be specified for identity column in table" error in SQL 2000 "FROM clause have the same exposed names. Use correlation names to distingui...