Simple Case Statement CASE [input_expression] WHEN when_expression THEN when_true_result_expression [...n] [ELSE else_result_expression] END Search Case Statement CASE WHEN Boolean_expression THEN when_true_result_expression [...n] [ELSE else_result_expression] END 参数...
SQL Server allows for only 10 levels of nesting inCASEexpressions. TheCASEexpression can't be used to control the flow of execution of Transact-SQL statements, statement blocks, user-defined functions, and stored procedures. For a list of control-of-flow methods, seeControl-of-Flow Language (...
Case语句语法(MySQL):- WHEN search_condition THEN statement_listEND CASESimple CASE expression: 浏览3提问于2014-01-17得票数 0 回答已采纳 2回答 SQL Server Case语句 、、、 我正在尝试运行这条sql语句,但它生成了错误“update附近的语法不正确” When 'MediaFiles' Then update 浏览1提问于2011-12-19...
如何使用python或Scala将复杂的SQL查询转换为spark-dataframe 、、、 我已经在spark中使用sqlcontext进行了一次转换,但我只想使用Spark Data frame来编写相同的查询。此查询包含join操作和SQL的case语句。sql查询编写如下: refereshLandingData=spark.sql( "select a.Sale_ID, a.Product_ID,"outer join preHoldData ...
例2:waitfor delay '00:00:03'; select * from tableA 三、TRY CATCH :http://technet.microsoft.com/zh-cn/library/ms175976.aspx BEGIN TRY { sql_statement | statement_block } END TRY BEGIN CATCH [ { sql_statement | statement_block } ] END CATCH [ ; ]...
SQL: CASE Statement 1.CASE 写法如下: CASE WHEN condition1 THEN result1 WHEN condition2 THEN result2 WHEN conditionN THEN resultN ELSE result END; 解释:1)先匹配第一条,不匹配的话继续第二条,如此循环,
Simple Case Statement CASE [input_expression] WHEN when_expression THEN when_true_result_expression [...n] [ELSE else_result_expression] END Search Case Statement CASE WHEN Boolean_expression THEN when_true_result_expression [...n] [ELSE else_result_expression] END ...
Microsoft JDBC 驅動程式適用於 SQL Server 開始 概述 API 參考 API 參考 ISQLServerCallableStatement 介面 ISQLServerConnection 介面 ISQLServerDataSource 介面 ISQLServerPreparedStatement 介面 ISQLServerResultSet 介面 ISQLServerStatement 介面 DateTimeOffset 類別 SQLServerBlob 類別 SQLServerCallabl...
The SQL CASE Expression TheCASEexpression goes through conditions and returns a value when the first condition is met (like an if-then-else statement). So, once a condition is true, it will stop reading and return the result. If no conditions are true, it returns the value in theELSE...
Assume that you execute a Transact-SQL query in Microsoft SQL Server 2012. When the query contains a long case statement, the query fails. Additionally, you receive the following error: Msg 8631, Level 17, State 1, Line ...