语法错误或访问冲突：1064，LEFT JOIN 条件上的语法错误

Question

当我们使用左连接条件将两个表连接到第三个表时出现错误。

这是一个错误

SQLSTATE[42000]：语法错误或访问冲突：1064 你有一个 SQL 语法错误；检查与您对应的手册 MariaDB 服务器版本，用于在 'ON(cnt.PKDID) 附近使用正确的语法 = pd.PKDID)) 在led.PKID = pkg.PKID 其中pkg.Sta' at line 3 (SQL: select count(*) as aggregate frompackagesaspkg left joineventsasev@987 987654331@EvnId=pkg.EvnId`左加入 （选择 pd.PKDID、pd.BsNaId、cnt.ContentList、bn.nature FROM package_dets 为 pd，busi_natures 为 bn WHERE pd.BsNaId = bn.BsNaId

LEFT JOIN(SELECT PKID, PKDID, ContentList FROM package_detcontents 按 PKDID 分组)cnt\n ON(cnt.PKDID = pd.PKDID)) 在led.PKID = pkg.PKID 其中pkg.Status = 活动和ev.enventNm = 生日）

这是我的代码，我有错误。

->leftJoin(DB::raw("(SELECT pd.PKDID, pd.BsNaId, cnt.ContentList, bn.nature FROM package_dets as pd, busi_natures as bn WHERE pd.BsNaId = bn.BsNaId 
    LEFT JOIN(SELECT PKID, PKDID, ContentList FROM package_detcontents GROUP BY PKDID)cnt
    ON(cnt.PKDID = pd.PKDID)) as led"), 
    function($join){
    $join->on("led.PKID","=","pkg.PKID");
    })

这是完整的代码

$package = DB::table("packages as pkg")
->select(DB::raw("pkg.PKID, pkg.EvnId, pkg.PkgNm, pkg.link, pkg.cross_price, pkg.off_percent, pkg.images, pkg.price, pkg.forpeople, pkg.Minsrating, pkg.Plsrating, pkg.remark, pkg.Status, led.nature, ev.enventNm"))
      ->leftJoin("events as ev","ev.EvnId","=","pkg.EvnId")
->leftJoin(DB::raw("(SELECT pd.PKDID, pd.BsNaId, cnt.ContentList, bn.nature FROM package_dets as pd, busi_natures as bn WHERE pd.BsNaId = bn.BsNaId 
    LEFT JOIN(SELECT PKID, PKDID, ContentList FROM package_detcontents GROUP BY PKDID)cnt
    ON(cnt.PKDID = pd.PKDID)) as led"), 
    function($join){
    $join->on("led.PKID","=","pkg.PKID");
    })
->where("pkg.Status", "=", "Active")
->where("ev.enventNm", "=", $envent)
->paginate(50);

Answer 1

您的查询语法有问题。这应该是您的查询-

SELECT pd.PKDID, 
   pd.BsNaId, 
   cnt.ContentList, 
   bn.nature
FROM package_dets AS pd
 INNER JOIN busi_natures AS bn ON pd.BsNaId = bn.BsNaId
 /*Above INNER JOIN can be any other JOIN as per your requirement*/
 LEFT JOIN
(
    SELECT PKID, 
           PKDID, 
           ContentList
    FROM package_detcontents
    GROUP BY PKID,PKDID,ContentList
) cnt 
ON cnt.PKDID = pd.PKDID;