syntaxsql 복사 IF boolean_expression { sql_statement | statement_block } [ ELSE { sql_statement | statement_block } ] 인수boolean_expression반환 TRUE 하거나 FALSE. boolean_expression 문이 포함된 SELECT 경우 문을 SELECT 괄호로 묶어야 합니다....
指定Transact-SQL 语句的执行条件。 如果满足条件,则在 IF 关键字及其条件之后执行 Transact-SQL 语句:布尔表达式返回 TRUE。 可选的 ELSE 关键字引入另一个 Transact-SQL 语句,当不满足 IF 条件时就执行该语句:布尔表达式返回 FALSE。 Transact-SQL 语法约定 语法 syntaxsql 复制 IF Boolean_expression { sql_...
Transact-SQL 語法慣例語法syntaxsql 複製 IF boolean_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。
Syntax Copy IF Boolean_expression { sql_statement | statement_block } [ ELSE { sql_statement | statement_block } ] Arguments Boolean_expression Is an expression that returns TRUE or FALSE. If the Boolean_expression contains a SELECT statement, the SELECT statement must be enclosed in parenthe...
SQL Server 流程控制中的 If...Else 语句。 1,If...Else 语句 1--===2--1, If...Else语句3--Desc:If..Else语句是条件判断语句4--author:ylbtech5--pubdate:10:39 2012/12/156--===7go89go10--===
Transact-SQL Syntax Conventions IF Boolean_expression { sql_statement | statement_block } [ ELSE { sql_statement | statement_block } ] Arguments Boolean_expression Is an expression that returns TRUE or FALSE. If the Boolean expression contains a SELECT statement, the SELECT statement must be encl...
Syntax If_Else_Statement := 'IF'Boolean_Expression'THEN'U-SQL_Statement[ 'ELSEIF'Boolean_Expression'THEN'U-SQL_Statement] [ 'ELSE'Boolean_Expression'THEN'U-SQL_Statement] 'END'. Remarks Boolean_Expression Is a constant-foldable expression that returns TRUE or FALSE. ...
mysql 存储过程 中 if else mysql存储过程definer,存储过程和函数mysql>HELPCREATEPROCEDURE;Name:'CREATEPROCEDURE'Description:Syntax:CREATE[DEFINER={user|CURRENT_USER}]PROCEDUREsp_name([proc_parameter[,...]])[characteristic
(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,它计算表达式,如果条件为true,则执行IF块中提到的语句,否则将执行ELSE...
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 报错是因为mysql的procedure里面if else语句里面, 用了begin end语句,去掉了就OK了. DELIMITER $$ USE `sportgbmj`$$ ...