多个WHERE条件导致错误:您的SQL语法中有错误;

Question

好.每当我尝试在其中获得多个WHERE条件时,它只会给我一个SQL语法错误.

错误:

Error Executing Database Query.

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 'read = '0'' at line 3

Resources:
Enable Robust Exception Information to provide greater detail about the source of errors. In the Administrator, click Debugging & Logging > Debug Output Settings, and select the Robust Exception Information option.
Check the ColdFusion documentation to verify that you are using the correct syntax.
Search the Knowledge Base to find a solution to your problem.
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Date/Time   21-Oct-14 08:27 PM

SQL查询本身:

<cfquery name = "getUserAlerts" datasource = "#DSN#">
SELECT *
FROM user_alerts
WHERE client_id = '#clientUser.id#' 
AND read = '0'
</cfquery>

在我看来,SQL查询没有任何问题.它应该工作,是否有人可以看到我写的错误？或者可以给出修复？

提前致谢!

编辑:

谢谢你给我的快速答案.反推功用了!多谢你们!

Answer 1

错误可能是因为这READ是一个保留字.完全重命名列(首选)或使用反引号将其转义.

另外,您应该使用cfqueryparam所有变量查询参数.CFQueryparam提供了许多好处(数据类型检查,提高查询性能等).其中一个最重要的是帮助防止sql注入,即使使用带引号的字符串也可能是一个问题.