我有多行记录查询。我想用列名键输出结构中的每一行。循环查询记录后,我想在数组中设置该结构。到目前为止,我的数据格式正确,但由于某种原因,每行数据都是相同的。似乎所有数据都来自一行。以下是我的代码示例:
<cfset strGraphData = StructNew()>
<cfset arrGraphData = arrayNew(1)>
<cfquery name="getGraphData" datasource="myDB">
SELECT gr_date, gr_LabelA, gr_LabelB
FROM GraphData WITH (NOLOCK)
WHERE gr_ID = <cfqueryparam value="#arguments.graphID#" cfsqltype="cf_sql_integer">
ORDER BY gr_date ASC
</cfquery>
<cfoutput query="getGraphData">
<cfloop list="#getGraphData.getColumnNames()#" index="columnName">
<cfset strGraphData[columnName] = Trim(getGraphData[columnName][getGraphData.CurrentRow])>
</cfloop>
<cfset arrayAppend(arrGraphData, strGraphData)>
</cfoutput>
如果我尝试转储数组,那么我的输出就是这样的:
array
1
struct
GR_DATE 2014-05-12 00:00:00.0
GR_LABELA 17
GR_LABELB [empty string]
2
struct
GR_DATE 2014-05-12 00:00:00.0
GR_LABELA 17
GR_LABELB [empty string]
3
struct
GR_DATE 2014-05-12 00:00:00.0
GR_LABELA 17
GR_LABELB [empty string]
4
struct
GR_DATE 2014-05-12 00:00:00.0
GR_LABELA 17
GR_LABELB [empty string]
5
struct
GR_DATE 2014-05-12 00:00:00.0
GR_LABELA 17
GR_LABELB [empty string]
6
struct
GR_DATE 2014-05-12 00:00:00.0
GR_LABELA 17
GR_LABELB [empty string]
7
struct
GR_DATE 2014-05-12 00:00:00.0
GR_LABELA 17
GR_LABELB [empty string]
8
struct
GR_DATE 2014-05-12 00:00:00.0
GR_LABELA 17
GR_LABELB [empty string]
9
struct
GR_DATE 2014-05-12 00:00:00.0
GR_LABELA 17
GR_LABELB [empty string]
以下是实际数据查询的示例:
GR_DATE
2014-01-14 00:00:00.000
2014-02-04 00:00:00.000
2014-02-18 00:00:00.000
2014-03-04 00:00:00.000
2014-03-18 00:00:00.000
2014-04-01 00:00:00.000
2014-04-15 00:00:00.000
2014-04-29 00:00:00.000
2014-05-12 00:00:00.000
GR_LABELA
1
3
5
5
10
16
16
16
17
GR_LABELB
NULL
NULL
NULL
NULL
NULL
NULL
NULL
NULL
正如您所看到的,结构数组中的数据会重复最后一行的数据。我不知道我的代码中的错误在哪里。如果有人知道如何解决这个问题,请告诉我。感谢。
答案 0 :(得分:3)
问题是代码只创建单个结构。所以这些循环所做的就是更新一个结构,并将相同的结构一遍又一遍地附加到数组中。
要使用单独的结构填充数组,必须在循环内部之前创建 new 结构:
<cfoutput query="getGraphData">
<!--- create new structure here --->
<cfset strGraphData = StructNew()>
<cfloop list="#getGraphData.getColumnNames()#" index="columnName">
<cfset strGraphData[columnName] = Trim(getGraphData[columnName][getGraphData.CurrentRow])>
</cfloop>
<cfset arrayAppend(arrGraphData, strGraphData)>
</cfoutput>