将查询结果设置为MySQL中的变量 [英] Set the result of a query to a variable in MySQL

问题描述

这应该是一个简单的语法内容: 我正在尝试在MySQL中将变量设置为等于查询结果，例如:

This should be a simple syntax thing: I'm trying to set a variable in MySQL equal to the result of a query for instance:

SET @variable1 = SELECT salary FROM employee_info WHERE emp_id = 12345678;

基本上，我希望将该员工的薪水存储为变量，然后可以对其进行操作和添加.

Basically I want the salary from that employee to be stored as a variable that I can then manipulate and add.

正确的语法是什么，因为我无法使其正常工作.

What would the correct syntax for this be because I can't get it to work.

推荐答案

SELECT salary INTO @variable1 FROM employee_info WHERE emp_id = 12345678 LIMIT 1;

或

SET @variable1 = (SELECT salary FROM employee_info WHERE emp_id = 12345678 LIMIT 1);

SELECT @variable1;

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