我已经搜索了应用程序,找到了已被某些条件(类别,经验年限等)过滤的个人信息
我对最后一个过滤器“ negeri的tempoh perkhidmatan”有疑问。我需要按州(negeri)计算工作经验的数量。例如,当搜索州(negeri)“ x”中的5年人员时,sql将汇总所选州每个人的经验年限。
这是按条件搜索SQL的完整代码:
$query = DB::table('itemregistrations')
->join('sections', 'itemregistrations.SectionID', '=', 'sections.SectionID')
->join('categories', 'itemregistrations.CategoryID', '=', 'categories.CategoryID')
->join('operasi', 'itemregistrations.OperasiID', '=', 'operasi.OperasiID')
->join('negeri', 'itemregistrations.NegeriID', '=', 'negeri.NegeriID')
->join('gred', 'itemregistrations.GredID', '=', 'gred.GredID')
->where('itemregistrations.statusProID', '=', 1)
->select('itemregistrations.name','sections.sectionname', 'categories.categoryname', 'operasi.operasiname', 'itemregistrations.Nobadan', 'itemregistrations.lahir_yy', 'itemregistrations.pdrm_yy', 'gred.namagred', 'itemregistrations.itemRegistrationID', '');
if($request->input('negeri_lahir') != ''){
$query->where('itemregistrations.NegeriID', $request->input('negeri_lahir'));
}
if($request->input('kategori') != '') {
$query->where('itemregistrations.CategoryID', $request->input('kategori'));
}
if($request->input('pangkat') != '') {
$query->where('itemregistrations.OperasiID', $request->input('pangkat'));
}
if(request('umur')) {
$query->whereRaw('YEAR(CURDATE()) - lahir_yy >= ?', [request('umur')]);
}
if($request->input('gred') != '') {
$query->where('itemregistrations.GredID', $request->input('gred'));
}
if(request('tempoh')) {
$query->whereRaw('YEAR(CURDATE()) - pdrm_yy >= ?', [request('tempoh')]);
}
if($request->input('negeri_perkhidmatan') != '') {
$query->join('itemregistrationpangkat', 'itemregistrationpangkat.itemRegistrationID', '=', 'itemregistrations.itemRegistrationID')
->where('itemregistrationpangkat.NegeriID', $request->input('negeri_perkhidmatan'));
}
if(request('tempoh_negeri')) {
$query->select(DB::raw('m.itemRegistrationID, sum(m.duration)'))
->from(DB::raw('(SELECT itemRegistrationID, NegeriID, yeartamatkhidmat - yearmulakhidmat as duration FROM itemregistrationpangkat) AS m
RIGHT JOIN itemregistrations ON itemregistrations.itemRegistrationID=m.itemRegistrationID'))
->distinct()
->groupBy('m.itemRegistrationID');
}
$newitem = $query->get();
return response::json($newitem);
涉及解决的代码是这个(最后一个过滤器):
if(request('tempoh_negeri')) {
$query->select(DB::raw('m.itemRegistrationID, m.NegeriID, sum(distinct m.duration)'))
->from(DB::raw('(SELECT itemRegistrationID, NegeriID, yeartamatkhidmat - yearmulakhidmat as duration FROM itemregistrationpangkat) AS m
RIGHT JOIN itemregistrations ON itemregistrations.itemRegistrationID=m.itemRegistrationID'))
->groupBy('m.itemRegistrationID', 'm.NegeriID');
}
问题是我需要从$ query语句的itemregistrations表中获取名称列,sectionID列,CategoryID,OperasiID,NegeriID,GredID。如何将“ tempoh_negeri”中的最后一个查询过滤器与上一个查询过滤器相结合?
答案 0 :(得分:2)
我并不特别了解Laravel,所以在尝试理解查询的构建方式时遇到了很多麻烦,但是这种语法似乎使人们可以通过添加块(但不一定以正确的顺序)来编写请求。因此,这是我认为您的查询应该针对SQL说话者执行的操作:
SELECT itemregistrations .name,
sections .sectionname,
categories .categoryname,
operasi .operasiname,
itemregistrations .Nobadan,
itemregistrations .lahir_yy,
itemregistrations .pdrm_yy,
gred .namagred,
itemregistrations .itemRegistrationID
-- if($tempoh_negeri) (request)
,m .itemRegistrationID,
sum(m.duration)
FROM itemregistrations
-- if($tempoh_negeri) (request)
,(SELECT DISTINCT itemRegistrationID,
NegeriID,
yeartamatkhidmat - yearmulakhidmat as duration
FROM itemregistrationpangkat) AS m
RIGHT JOIN itemregistrations
ON itemregistrations.itemRegistrationID = m.itemRegistrationID
JOIN sections
ON itemregistrations.SectionID = sections.SectionID
JOIN categories
ON itemregistrations.CategoryID = categories.CategoryID
JOIN operasi
ON itemregistrations.OperasiID = operasi.OperasiID
JOIN negeri
ON itemregistrations.NegeriID = negeri.NegeriID
JOIN gred
ON itemregistrations.GredID = gred.GredID
-- if($negeri_perkhidmatan)
JOIN itemregistrationpangkat
ON itemregistrationpangkat.itemRegistrationID = itemregistrations.itemRegistrationID
WHERE itemregistrations.statusProID = 1
-- if($negeri_lahir) (WHERE)
AND itemregistrations.NegeriID = $negeri_lahir
-- if($kategori) (WHERE)
AND itemregistrations.CategoryID = $kategori
-- if($pangkat) (WHERE)
AND itemregistrations.OperasiID = $pangkat
-- if(umur) (WHERERAW) (request)
AND YEAR(CURDATE()) - lahir_yy >= umur
-- if($gred) (WHERE)
AND itemregistrations.GredID = $gred
-- if($tempoh) (WHERERAW) (request)
AND YEAR(CURDATE()) - pdrm_yy >= tempoh
-- if($negeri_perkhidmatan)
AND itemregistrationpangkat.NegeriID = $negeri_perkhidmatan
-- if($tempoh_negeri) (request)
GROUP BY m.itemRegistrationID
如果是这样,您将无法执行该操作(包括子查询中的主列),因为您的子查询将在主查询之前进行评估。
相反,您需要在主查询级别编写一个适当的过滤器,即::已经存在的其他“ JOIN…ON”子句。会给出:
LEFT JOIN itemregistrationpangkat
ON itemregistrationpangkat.itemRegistrationID = itemregistrations.itemRegistrationID
…然后直接在您的sum()
函数中指定减法
sum(yeartamatkhidmat - yearmulakhidma)
关于Lavarel,这可能会给出类似的信息:
if(request('tempoh_negeri')) {
$query->leftjoin('itemregistrationpangkat','itemRegistrationID','=','itemregistrations.itemRegistrationID');
$query->select(DB:raw('sum(yeartamatkhidmat - yearmulakhidmat'));
}