The IF ELSE statement controls the flow of execution in SQL Server. It can be used in stored-procedures, functions, triggers, etc. to execute the SQL statements based on the specified conditions. Syntax: Copy IF Boolean_expression { sql_statement | statement_block } [ ELSE { sql_statement...
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...
Msg 156, Level 15, State 1, Line 2 Incorrect syntax near the keyword 'update'. Msg 102, Level 15, State 1, Line 2 Incorrect syntax near ')'. 我试过使用CASE,结果是一样的: CASE WHEN @etape = 1 THEN (UPDATE table1 SET column1 = 1) WHEN @etape = 2 THEN (UPDATE table2 SET co...
指定Transact-SQL 语句的执行条件。 如果满足条件,则执行后跟IF关键字及其条件的 Transact-SQL 语句:布尔表达式返回TRUE。 可选ELSE关键字引入了另一个 Transact-SQL 语句,该IF语句在条件不满足时执行:布尔表达式返回FALSE。 Transact-SQL 语法约定 语法 syntaxsql ...
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...
问sql if exists简单语法错误EN像列 LIKE 字符串或者列 BETWEEN 值 1 AND 值 2这样的谓词需要指定 2...
syntaxsql Kopiér IF boolean_expression { sql_statement | statement_block } [ ELSE { sql_statement | statement_block } ] Argumentsboolean_expressionAn expression that returns TRUE or FALSE. If the boolean_expression contains a SELECT statement, the SELECT statement must be enclosed in parentheses...
In this article Syntax Arguments Return types Examples Show 2 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 SQL database in Microsoft ...
syntaxsql Kopēt IF boolean_expression { sql_statement | statement_block } [ ELSE { sql_statement | statement_block } ] Argumentsboolean_expressionAn expression that returns TRUE or FALSE. If the boolean_expression contains a SELECT statement, the SELECT statement must be enclosed in parentheses...
In this article Syntax Arguments Return types Examples Show 2 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 SQL database in Microsoft ...