syntaxsql IFboolean_expression{sql_statement|statement_block} [ELSE{sql_statement|statement_block} ] 引數 boolean_expression 傳回 或FALSE的TRUE表達式。 如果布爾表達式包含SELECT語句,SELECT語句必須以括弧括住。 {sql_statement|statement_block} 使用語句區塊所定義的任何 Transact-SQL 語句或語句群組。 除非使...
syntaxsql IFboolean_expression{sql_statement|statement_block} [ELSE{sql_statement|statement_block} ] 引數 boolean_expression 傳回 或FALSE的TRUE表達式。如果boolean_expression包含SELECT語句,SELECT語句必須以括弧括住。 使用語句區塊所定義的任何有效 Transact-SQL 語句或語句群組。 若要定義語句區塊 (batch),請...
1.3, selectLEN(oldbm),caseLEN(oldbm)when7then'0'+oldbmelseoldbmendas'oldbm'fromtemp_yb_dw_0711b 1.4,
The optional ELSE keyword introduces another Transact-SQL statement that is executed when the IF condition is not satisfied: the Boolean expression returns FALSE.Transact-SQL syntax conventionsSyntaxsyntaxsql Kopírovat IF Boolean_expression { sql_statement | statement_block } [ ELSE { sql_statement...
The optional ELSE keyword introduces another Transact-SQL statement that is executed when the IF condition is not satisfied: the Boolean expression returns FALSE. Transact-SQL syntax conventions Syntax syntaxsql Kopiëren IF Boolean_expression { sql_statement | statement_block } [ ELSE { sql_...
15 -- 2,Syntax 16 -- Desc:简单的Case语法代码: 17 --=== 18 Case input_expression 19 When when_expression Then result_expression 20 [...n] 21 [Else else_result_expression] 22 End 23 24 --Remark: 25 26 go 27 --=== 28 -- 3,Example 29 -- Desc:查看...
格子Syntax用语 CASE表达式有两种不同的格式:简单和搜索。这两种类型的格式稍有不同,如图1所示。 图1:CASE syntax用语 通过查看图1中的CASE表达式的两种不同格式,您可以看到每种格式如何提供一种不同的方式来标识一个确定案例表达式结果的多个表达式。对于这两种情况,每个子句都执行一个布尔测试。在简单的CASE表达式中...
Syntax57--Desc:搜索的Case语法代码:58--===59Case60Whenwhen_expressionThenresult_expression61[...n]62[Else else_result_expression]63End6465--Remark:6667go68--===69--B3,Example70--Desc:查看类别ID为2的类别名称。71--=== 1.2,case when cl...
The functionality is compatible, but the syntax differs. SQL Server usesIF <condition> <statement> ELSE <statement>. Aurora MySQL usesIF <condition> THEN <statement> ELSE <statement> ENDIF. Rewrite T-SQL code to add the mandatoryTHENandENDIFkeywords. ...
You can optionally specify a timeout if you want to stop waiting after your specified number of milliseconds. The syntax of the WAITFOR command is: Copy WAITFOR(<statement>) [,TIMEOUT ] Another T-SQL enhancement in Yukon allows you to return output from Data Manipulation Language (DML) ...