Question

我正在使用moveToFirst，效果非常好。但是这个SQL查询不起作用。我不知道为什么。我没有收到任何错误。

我的查询

String sqlKomut = "SELECT SHareket.*,CHareket.[Meblag],Cari.AnlikBakiye FROM CHareket , SHareket,Cari WHERE  CHareket.[CariID]=SHareket.[CariID]=Cari.[CariID]= '"+cari.getCariID()+"' AND  SHareket.[Seri]='"+hareket.getSeri()+"' AND SHareket.[Sira]='"+hareket.getSira()+"'AND SHareket.[Tip]='"+hareket.getTip()+"' AND SHareket.[Cins]='"+hareket.getCins()+"' ORDER BY SHareket.[Satir]";

我在这里得到了我的光标getValue：

Cursor cursor = db.rawQuery(sqlKomut, null);

if(cursor !=null){

    if(cursor.moveToFirst()){

        do {
            eleman.setStrEleman(cursor.getString(cursor.getColumnIndex("Seri")));
            eleman.setIntEleman1(cursor.getInt(cursor.getColumnIndex("Sira")));
            eleman.setIntEleman2(cursor.getInt(cursor.getColumnIndex("CariID")));
            eleman.setIntEleman10(cursor.getInt(cursor.getColumnIndex("Cins")));
            eleman.setIntEleman11(cursor.getInt(cursor.getColumnIndex("Tip")));
            eleman.setIntEleman11(cursor.getInt(cursor.getColumnIndex("Satir")));
            eklenenfaturalar.add(eleman);

        } while (cursor.moveToNext());
    }
}

Answer 1

WHERE CHareket.[CariID]=SHareket.[CariID]=Cari.[CariID]= '...'

您无法在单个表达式中进行多次比较。（比较返回一个布尔值，0或1;然后，任何更多的比较将使用此布尔值而不是ID值，例如，您最终得到类似1=Cari.CariID的内容。）

要使用多重比较，请将它们与AND连接（正如您对其他的一样）：

WHERE CHareket.[CariID]=SHareket.[CariID]
  AND SHareket.[CariID]=Cari.[CariID]
  AND Cari.[CariID]='...'
  ...

moveToFirst不起作用

1 个答案: