"where in" MySQL 在nodejs中查询

Question

我需要使用 "WHERE IN" 进行 MySQL 查询。这是我的查询：

var myQuery = 'SELECT uid FROM ' +tableName+ ' where Gender IN (' + Info.Gender.join() + ')';

如果我打印 Info.Gender 它将作为字符串 ['Male', 'Female']。但是当查询完成时它说

SELECT uid FROM appUsers where Gender IN (Male, Female)

但应该是：

SELECT uid FROM appUsers where Gender IN ('Male', 'Female')

这意味着它不将 Female 作为字符串。

有什么想法吗？

Answer 1

您的查询需要单引号：

var myQuery = "SELECT uid FROM " +tableName+ " where Gender IN ('" + Info.Gender.join("','") + "')";

Answer 2

你应该使用query escaping（前提是你使用的是node-mysql）：

var myQuery = 'SELECT uid FROM ?? where Gender IN (?)';
connection.query(myQuery, [ tableName, Info.Gender ], ...);

"where in" MySQL query in nodejs