CASE 식의 Transact-SQL 참조입니다. CASE는 조건 목록을 평가하여 특정 결과를 반환합니다.
たとえば、SELECT、UPDATE、DELETE、SET などのステートメントや、、IN、WHERE、ORDER BY、HAVING などの句で CASE を使用できます。 Transact-SQL 構文表記規則 構文 SQL Server、Azure SQL Database、Azure Synapse Analytics の構文。 syntaxsql コピー -- Simple CASE expression: CASE input_expressio...
Furthermore searched case works in virtually all SQL databases. From that point of view, one could say that searched case is the only case syntax you absolutely need to remember. CASE WHEN <condition> THEN <result> [WHEN <condition> THEN <result> ...] [ELSE <result>] END...
是一种条件表达式,用于根据不同的条件选择不同的结果。嵌套CASE语句可以包含多个嵌套的条件和结果,并且每个结果可以是一个嵌套CASE语句。 嵌套CASE语句的基本语法如下: ```sql CASE...
CASE 可以用在允許有效運算式的任何陳述式或子句中。 例如,您可以在 SELECT、UPDATE、DELETE 和 SET 之類的陳述式,以及 、IN、WHERE、ORDER BY 和 HAVING 之類的子句中使用 CASE。Transact-SQL 語法慣例SyntaxSQL Server、Azure SQL Database 和 Azure Synapse Analytics 的語法。syntaxsql 複製...
Using the CASE expression instead of dynamic SQL in SQL Server SQL Server CASE Expression Overview SQL Server CASE Statement Example If you’d like to learn more about SQL, you can check out the follow resources: SELECT command for SQL Server Tutorial ...
CASE 搜索条件1 2 3 4 5 6 7 SELECT OrderID, Quantity, CASEWHEN Quantity > 30 THEN "The quantity is greater than 30" WHEN Quantity = 30 THEN "The quantity is 30" ELSE "The quantity is under 30" END FROM OrderDetails; CASE分组条件...
测试必备的Mysql常用sql语句系列 https://www.cnblogs.com/poloyy/category/1683347.html 前言针对数据表里面的每条记录,select查询语句叫做数据查询语言...(DQL) select的语法格式 SELECT {* | } [ FROM , … [WHER...
Syntax Arguments Return types Remarks Show 3 more Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance Azure Synapse Analytics Analytics Platform System (PDW) SQL analytics endpoint in Microsoft Fabric Warehouse in Microsoft Fabric ...
We have following syntax for a case statement in SQL with a simple expression 1 2 3 4 5 6 SELECT CASE Expression When expression1 Then Result1 When expression2 Then Result2 ... ELSE Result END Usually, we store abbreviations in a table instead of its full form. For example, in my...