下面由laravel教程栏目带大家介绍关于laravel joinsub的使用，希望对大家有所帮助！
我有个语句，想着以为 join 子查询不支持改成模型查询的写法呢，百度了下，发现有 joinSub 的语法，在下孤陋寡闻了，特此记录
以下语句目的是，取全表最新日期的那条（相同字段中有重复时，只取最新）
表字段大写不是我定的~我只是查询使用者
$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()相关推荐：最新的五个Laravel视频教程
