SQL Server提供了使用SQL IF语句执行实时编程逻辑的功能。 句法(Syntax) In the following SQL IF Statement, it evaluates the expression, and if the condition is true, then it executes the statement mentioned in IF block otherwise statements within ELSE clause is executed. 在下面SQL IF语句中,它计算...
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...
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...
The SQL IF statement is not a standard feature in all SQL databases. Its availability and syntax may vary between different database systems. Some databases use different conditional constructs like CASE WHEN. Popular database systems such as MySQL, PostgreSQL, and SQL Server have their own ways...
Syntax Arguments Result Types Examples Nog 2 weergeven 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 Imposes conditions on the execution of a...
syntaxsql Копиране IF Boolean_expression { sql_statement | statement_block } [ ELSE { sql_statement | statement_block } ] Бележка To view Transact-SQL syntax for SQL Server 2014 (12.x) and earlier versions, see Previous versions documentation....
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IF/ELSE Syntax Error Posted by:a a Date: August 30, 2008 06:55PM Whats wrong in this small procedure? Script line: 4 You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'end if;...
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 ...