SQL 查询在我的 JOIN 练习中不起作用

Question

我正在使用SQL查询，但查询结果是12行，需要3行；我想不通。

查询无效：

SELECT g.*
    ,c.TxtFobFiyati
    ,C.TxtTalepETeslimTarihi
    ,c.TslParaBirimi
    ,c.TxtFiyat
    ,C.TslDepoKodu
    ,c.TslOlcuBirimi AS 'Olcu'
    ,j.TxtAmbalajDara
    ,j.TxtPaletDara
    ,g.TxtAdet AS 'ambalajAdet'
    ,g.TxtPaletSayisi AS 'paletSayisi'
    ,j.TxtAmbalajAdi
    ,J.TxtAmbalajNetKG
    ,j.TxtBoxGrossWeight
    ,C.TxtAciklama AS 'KalemAciklama'
    ,G.TxtAciklama AS 'KalemAciklama2'
    ,g.TxtPaletUstu AS 'PaletUstu'
    ,g.TxtPaletSayisi AS 'PaletSayisi'
    ,c.TxtUrunAdiEng AS 'UrunAdi_Ingilizce'
    ,C.TxtFobFiyati AS 'FobFiyati'
    ,j.TslPaletTipi AS 'PaletTipi'
    ,j.TxtPaletDara AS 'PaletDara'
FROM E_KT_SAS_Form A
LEFT JOIN E_KT_SAS_Form_DtyUrunler2 B
    ON A.ID = B.FORMID
LEFT JOIN E_KT_SAS_FrmSipUrunEkle C
    ON B.DOCUMENTID = C.ID
LEFT JOIN E_KT_SAS_Form_DtyTeyitEdilen2 D
    ON A.ID = D.FORMID
LEFT JOIN E_KT_SAS_FrmUretimTarihiEkle E
    ON D.DOCUMENTID = E.ID
        AND E.TslUrun = C.TslUrunKodu
LEFT JOIN E_KT_SAS_Form_DtySevkiyatlar F
    ON A.ID = F.FORMID
LEFT JOIN E_KT_SAS_FrmSevkiyatEkle G
    ON F.DOCUMENTID = G.ID
LEFT JOIN E_KT_SAS_FrmSipUrunEkle_DtyAmbalajlama H
    ON C.ID = H.FORMID
LEFT JOIN E_KT_SAS_FrmUrunAmbalajlama J
    ON H.DOCUMENTID = J.ID
WHERE E.TslOnay_TEXT = 'Evet'
    AND C.TslUrunKodu = G.TslUrun
    AND A.ID = 11682

无效的结果

正确的结果表

Answer 1

Step1) 从驱动程序表开始计数，即别名为“A”的表。如果得到 3，请检查计数。继续。 对每个新加入重复第 1 步，看看你的计数在哪里增加到 12。那是你的麻烦加入。如果可能，将其注释掉并继续连接。如果您无法进行连续连接，请找到最佳解决方案，将计数降至 3。

如果你确定你的 where 子句很棒；否则也开始没有它。如果计数大于 3。将其弹回。

  select count(1) 
    FROM E_KT_SAS_Form A
    LEFT JOIN E_KT_SAS_Form_DtyUrunler2 B ON A.ID = B.FORMID
    LEFT JOIN E_KT_SAS_FrmSipUrunEkle C  ON B.DOCUMENTID = C.ID
    LEFT JOIN E_KT_SAS_Form_DtyTeyitEdilen2 D ON A.ID = D.FORMID
    LEFT JOIN E_KT_SAS_FrmUretimTarihiEkle E ON D.DOCUMENTID = E.ID
            AND E.TslUrun = C.TslUrunKodu 
    LEFT JOIN E_KT_SAS_Form_DtySevkiyatlar F ON A.ID = F.FORMID
    LEFT JOIN E_KT_SAS_FrmSevkiyatEkle G ON F.DOCUMENTID = G.ID
    LEFT JOIN E_KT_SAS_FrmSipUrunEkle_DtyAmbalajlama H ON C.ID = H.FORMID
    LEFT JOIN E_KT_SAS_FrmUrunAmbalajlama J ON H.DOCUMENTID = J.ID
    WHERE E.TslOnay_TEXT = 'Evet' AND C.TslUrunKodu = G.TslUrun AND A.ID = 11682