Question

String query= "select atm.Id_Track,"
+"(Select Tm.Title From Track_Master Tm Where Tm.Id_Track = Atm.Id_Track) Track_Title,"
+"(Select Tm.Isrc From Track_Master Tm Where Tm.Id_Track = Atm.Id_Track) Track_Isrc,"
+"(select am.title from album_master am where am.id_album= atm.id_album) album_title,"
+"(select am.catalog from album_master am where am.id_album= atm.id_album) album_catalog"
+"from album_track_mapping atm, album_master alb  where alb.catalog =? and atm.id_album_original = alb.id_album and atm.id_album <> alb.id_album";

将错误视为

ORA-00923：来自未指定的关键字

请提出任何建议。提前致谢

Answer 1

您在FROM之前缺少空格，因此正确的查询将是：

String query= "select atm.Id_Track,"
+"(Select Tm.Title From Track_Master Tm Where Tm.Id_Track = Atm.Id_Track) Track_Title,"
+"(Select Tm.Isrc From Track_Master Tm Where Tm.Id_Track = Atm.Id_Track) Track_Isrc,"
+"(select am.title from album_master am where am.id_album= atm.id_album) album_title,"
+"(select am.catalog from album_master am where am.id_album= atm.id_album) album_catalog "
+"from album_track_mapping atm, album_master alb  where alb.catalog =? and atm.id_album_original = alb.id_album and atm.id_album <> alb.id_album";

Answer 2

请尝试以下操作：

String query= "select atm.Id_Track,"
+"(Select Tm.Title From Track_Master Tm Where Tm.Id_Track = Atm.Id_Track) Track_Title,"
+"(Select Tm.Isrc From Track_Master Tm Where Tm.Id_Track = Atm.Id_Track) Track_Isrc,"
+"(select am.title from album_master am where am.id_album= atm.id_album) album_title,"
+"(select am.catalog from album_master am where am.id_album= atm.id_album) album_catalog"
+" from album_track_mapping atm, album_master alb  where alb.catalog =? and atm.id_album_original = alb.id_album and atm.id_album <> alb.id_album";

它显示ORA-00923:From keyword not specified，因为您在最后一行from之前缺少空格字符。

ORA-00923：未指定关键字

2 个答案: