Question

我有一个问题：

<cfif topic NEQ "">
    <cfquery name="queryTopicName" datasource="#ODBC#">
        select topic as topicName from ltbTopics where topicId in (#topic#)
    </cfquery>
    <cfset selectedRiskCategories = ValueList(queryTopicName.topicName)>
</cfif>

这里“＃topic＃”包含一个第一个值为空的列表，所以它就像，51,52，等所以它给出了一个错误：

“'，'
附近的语法不正确

。
第33行出现错误“，任何人都可以帮我解决这个问题吗？

Answer 1

有很多方法可以做到这一点。但是一个简单的黑客就是将列表转换为数组，然后返回列表。

<cfif topic NEQ "">
 <cfset arrayTopic = ListToArray(topic)>
 <cfset topic = ArrayToList(arrayTopic)>
 <!---you may need some more validations as it is possible that original list only has commas in it--->
   <cfquery name="queryTopicName" datasource="#ODBC#">
      select topic as topicName from ltbTopics where topicId in (#topic#)
   </cfquery>
   <cfset selectedRiskCategories = ValueList(queryTopicName.topicName)>
</cfif>

Answer 2

谢谢您的答案，最终查询对我有用完美是：

    <!--- Query to extract selected risk category filters --->
    <cfif topic NEQ "">
        <cfset arrayTopic = ListToArray(topic)>
        <cfset topic = ArrayToList(arrayTopic)>

        <cfquery name="queryTopicName" datasource="#ODBC#">
    select 
        topic as topicName
    from 
        ltbTopics 
    where 
        topicId in 
        (
            <cfqueryparam
            value = "#topic#"
            cfsqltype= "CF_SQL_INTEGER"
            list = "true"
        />)
        </cfquery>
        <cfset selectedRiskCategories = ValueList(queryTopicName.topicName)>
     </cfif>

    Once again thanks for your help, I really appreciate it.

从值列表中删除null

2 个答案: