The following tutorial column of Laravel will introduce you to the use of Laravel joinSub. I hope it will be helpful to everyone!
I have a statement, and I thought that the join
subquery does not support the writing method of changing it to a model query. After searching on Baidu, I found that there is a syntax of joinSub
, which is below I am ignorant, hereby record
The purpose of the following statement is to get the latest date in the entire table (if there are duplicates in the same field, only the latest one is taken)
The capitalization of the table fields is not determined by me~I am just querying User
$resultIds = DB::connection('fund')->select(" SELECT t1.InvestAdvisorCode FROM table t1 INNER JOIN ( SELECT SUBSTRING_INDEX( group_concat( id ORDER BY EndDate DESC ), ',', 1 ) AS id FROM table t2 GROUP BY InvestAdvisorCode ) t2 ON t1.id = t2.id order by t1.TotalFundNV desc ");
$subQuery = Table::query() ->selectRaw("SUBSTRING_INDEX( group_concat( id ORDER BY EndDate DESC ), ',', 1 ) AS id") ->from('table as t2') ->groupBy('InvestAdvisorCode') ->getQuery(); $resultIds=Table::query() ->from('table as t1') ->joinSub($subQuery,'t2','t1.id','=','t2.id') ->orderBy('t1.TotalFundNV','desc') ->pluck('InvestAdvisorCode')->toArray()
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