节点MySQL转义LIKE语句 [英] Node MySQL escape LIKE statement

问题描述

如何在node-mysql中转义MySQL LIKE语句？

How do escape a MySQL LIKE statement in node-mysql?

"SELECT * FROM card WHERE name LIKE '%" + connection.escape(req.body.search) + "%'"

结果

'SELECT * FROM card WHERE name LIKE \'%\'hello\'%\''

这是语法错误。如果我使用替代语法

Which is a syntax error. If I use the alternative syntax of

connection.query("SELECT * FROM card WHERE name LIKE '%?%'", req.body.search, function () {});

导致类似的语法错误。我也试过了

Results in a similar syntax error. I've also tried

connection.query("SELECT * FROM card WHERE name LIKE ?", '%' + req.body.search + '%', function () {});

最终逃脱'％'符号。

推荐答案

不确定为什么它会在你的上一个例子中转义％，因为这对我来说很好：

Not sure why it's escaping the % in your last example, because that works fine for me:

// lifted from my code:
var value = 'ee20e966289cd7';
connection.query('SELECT * from django_session where session_key like ?', '%' + value + '%', ...)

// Result:
[ { session_key: '713ee20e966289cd71b936084a1e613e', ... } ]

当我打开驱动程序中的调试时（传递 debug：true 作为 mysql.createConnection 的参数，它不会转义百分号：

When I turn on debugging in the driver (pass debug:true as argument to mysql.createConnection), it doesn't escape the percent sign:

{ command: 3,
  sql: 'SELECT * from django_session where session_key like \'%ee20e966289cd7%\'' }

（ 逃避单引号，但这是出于显示目的只有）

(it does escape the single quote, but that's for display purposes only)

（使用 mysql@2.0.0-alpha8 ）

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