Queryappend 的任何自定义函数

Question

Queryappend 在 Coldfusion - 18 中而不在 Coldfusion - 16 中。

任何人都可以为“Queryappend”推荐任何自定义 coldfusoin 函数吗

假设我有 2 个查询：

Query-1
select * from user where userid > 10 order by userid asc

Query-2
select * from user where userid < 10 order by userid desc

Query append should return folowing:

userid username 
11  AA
12  BB
13  CC
9   MM
8   NN
7   OO

提前致谢

Answer 1

这是实现此目的的一种方法。

<cfscript>
IDList1 = '1,2,3';
IDList2 = '6,5,4';
NameList1 = 'Fred,Wilma,Pebbles';
NameList2 = 'Barney,Betty,Bam,Bam';
Flinstones = QueryNew("UserID,UserName", 'integer,varchar');
Rubbles = QueryNew("UserID,UserName", 'integer,varchar');

for (i = 1; i <=3; i++) {
QueryAddRow(Flinstones);
QuerySetCell(Flinstones, 'UserID', i);

QuerySetCell(Flinstones, 'UserName'
    , ListGetAt(NameList1, i));

QueryAddRow(Rubbles);
QuerySetCell(Rubbles, 'UserID'
    , ListGetAt(IDList2, i));

QuerySetCell(Rubbles, 'UserName'
    , ListGetAt(NameList2, i));
    
}
</cfscript>

<cfquery name="All" dbtype="query">
    select UserID, UserName
    from Flinstones
    order by UserID
</cfquery>

<cfloop query = "Rubbles">
    <cfset QueryAddRow(All)>
    <cfset QuerySetCell(All, 'UserId', UserId,
        All.recordcount)>
        <cfset QuerySetCell(All, 'UserName', UserName,
        All.recordcount)>
    
    
</cfloop>

<cfdump var="#all#">

你可以玩玩它here。

将此逻辑放入接受两个查询和 returns 第三个查询的函数中并不难。

Answer 2

在早期版本的 ColdFusion 中模拟 queryAppend() 的最简单且最易读的解决方案是使用查询查询 (qoq)，然后使用 union all 功能追加结果 qoq 通过不提供 ORDER BY 子句。

<cfquery name="query1" datasource="mydatasource">
    select * from user where userid > 10 order by userid asc
</cfquery>

<cfquery name="query2" datasource="mydatasource">
    select * from user where userid < 10 order by userid desc
</cfquery>

<!--- "Union all" the 2 result sets together in a qoq and don't supply an order by clause  --->
<cfquery name="queryAppend" dbtype="query">
    select * from query1
    union all
    select * from query2
</cfquery>

这是要点的工作示例 https://trycf.com/gist/484d3ab19f52d81867dacdced47fad09/lucee5?theme=monokai

Queryappend 的任何自定义函数

Any custom function for Queryappend

coldfusion

coldfusion-2016