value IN (value1, value2, ...) 1. 其中,value是要判断的值,value1, value2等是一个集合。 IF加IN判断条件 在MySQL中,我们可以将IF语句和IN操作符结合使用来进行条件判断。例如,我们要查询员工表中工资在一定范围内的员工,可以使用以下代码: SELECT*FROMemployeesWHEREIF(salaryIN(5000,6000,7000),1,0)=...
I'm pretty new to MySQL and I have a problem here with an IF statement inside a stored procedure. Here's the stored procedure, as you can see nothing too fancy, it includes 3 actions... : -- Create order_products stored procedure ...
MySQL中的IF判断语句是一种条件控制结构,用于根据某个条件的真假来执行不同的SQL语句。它类似于编程语言中的if-else语句。 语法 代码语言:txt 复制 IF condition THEN statement1; [ELSE statement2;] END IF; condition:要评估的条件。 statement1:条件为真时执行的语句。 statement2:条件为假时执行的语句(可选...
There is also an IF() function, which differs from the IF statement described here. See Section 14.5, “Flow Control Functions”. The IF statement can have THEN, ELSE, and ELSEIF clauses, and it is terminated with END IF. If a given search_condition evaluates to true, the corresponding...
There is also an IF() function, which differs from the IF statement described here. See Section 14.5, “Flow Control Functions”. The IF statement can have THEN, ELSE, and ELSEIF clauses, and it is terminated with END IF. If a given search_condition evaluates to true, the corresponding...
[ELSE statement_list] END CASE;案例根据传入的月份,判定月份所属的季节(要求采用case结构)。1-3月份,为第一季度 4-6月份,为第二季度 7-9月份,为第三季度 10-12月份,为第四季度create procedure p(in month int) begin declare result varchar(10); case when month >= 1 and month <= 3 then set...
MySQL中的IF语句可以说是一个分支结构,它是一种条件判断语句,用于在执行不同的SQL语句时进行条件判断。MySQL IF语句的大体结构如下: IF(condition, true_statement, false_statement) MySQL IF语句的关键组成部分是condition,即条件。如果条件为真,则会执行true_statement, 如果条件为假,则会执行false_statement。 MyS...
MySQL IF语句语法: IF expression THEN statements; END IF; 1. 2. 3. 如果表达式(expression)计算结果为TRUE,那么将执行statements语句,否则控制流将传递到END IF之后的下一个语句。 MySQL IF ELSE语句: IF expression THEN statement; ELSE else-statements; ...
在MySQL中,IF语句通常用于在查询中根据条件返回不同的值。它可以在SELECT语句、存储过程或函数中使用。以下是IF语句的基本语法: 在SELECT语句中使用IF 代码语言:txt 复制 SELECT column1, column2, IF(condition, value_if_true, value_if_false) AS result_column FROM table_name;...
I'm trying to create a custom expression in reporting for Apricot which uses MySQL with minor differences. I need this column to reference the user entered Global Values on the report. I can't get this one expression to work - here is what I have so far: ...