Question

我是SQL新手，我正在努力完成oracle数据库数据的特定输出。

我需要将一些行转换为列，并将其与我需要的一些选定列放在一起。问题是我必须在很多表格上完成这项任务，而我却找不到办法。我猜你作为专业人士必须每天处理这样的事情，所以也许你可以帮我解决这个问题。这会让我很开心。

这是我在db中的表：

PRODUCTTXTID    PRODUCTID   COMID   TXTNUMMER   LANG    TXT
0740000000005D  0740000000002P  254 1   DE  German text1 of this article
0740000000005I  0740000000002P  254 1   IT  Italian text1 of this article
0740000000005F  07400000000EPF  254 2   DE  German text2 of this article
07400000000F03  074000000007L8  254 1   DE  German text1 of this article
0740000000005D  074000000007L8  254 2   IT  Italian text2 of this article
07400000000F05  074000000007L9  254 1   DE  German text1 of this article
0740000000001S  0740000000000X  254 1   DE  German text1 of this article
0740000000001T  0740000000000X  254 1   IT  Italian text1 of this article
0740000000001U  0740000000000Y  254 2   DE  German text2 of this article
0740000000001V  0740000000000Y  254 1   IT  Italian text1 of this article
07400000000F07  074000000007LA  254 1   DE  German text1 of this article

我需要像这样把它拿出来：

PRODUCTID               TXT1DE                      TXT1IT                          TXT2DE                      TXT2IT
0740000000002P  German text1 of this article    Italian text1 of this article   German text2 of this article    Italian text2 of this article
0740000000002A  German text1 of this article    Italian text1 of this article   German text2 of this article    Italian text2 of this article
07400000000EPF  German text1 of this article    Italian text1 of this article   German text2 of this article    Italian text2 of this article
074000000007L7  German text1 of this article    Italian text1 of this article   German text2 of this article    Italian text2 of this article
074000000007L8  German text1 of this article    Italian text1 of this article   German text2 of this article    Italian text2 of this article
074000000007L9  German text1 of this article    Italian text1 of this article   German text2 of this article    Italian text2 of this article
0740000000000E  German text1 of this article    Italian text1 of this article   German text2 of this article    Italian text2 of this article
0740000000000X  German text1 of this article    Italian text1 of this article   German text2 of this article    Italian text2 of this article
0740000000000Y  German text1 of this article    Italian text1 of this article   German text2 of this article    Italian text2 of this article
0740000000000A  German text1 of this article    Italian text1 of this article   German text2 of this article    Italian text2 of this article
074000000007LA  German text1 of this article    Italian text1 of this article   German text2 of this article    Italian text2 of this article

最好的问候，亚光

Answer 1

如果您在TXTNUMMER和LANG中限制了不同的值，并且您的Oracle版本为11g或更新版本，那么简单的PIVOT应该可以满足您的需求。您只需要在PIVOT的IN子句中对可能的值进行硬编码。例如，关于样本数据：

WITH TST AS
(SELECT '0740000000002P' PRODUCTID, 254 COMID, 1 TXTNUMMER, 'DE' LANG, 'German text1 of this article' TXT FROM DUAL UNION ALL
SELECT '0740000000002P' PRODUCTID, 254 COMID, 1 TXTNUMMER, 'IT' LANG, 'Italian text1 of this article' TXT FROM DUAL UNION ALL
SELECT '07400000000EPF' PRODUCTID, 254 COMID, 2 TXTNUMMER, 'DE' LANG, 'German text2 of this article' TXT FROM DUAL UNION ALL
SELECT '074000000007L8' PRODUCTID, 254 COMID, 1 TXTNUMMER, 'DE' LANG, 'German text1 of this article' TXT FROM DUAL UNION ALL
SELECT '074000000007L8' PRODUCTID, 254 COMID, 2 TXTNUMMER, 'IT' LANG, 'Italian text2 of this article' TXT FROM DUAL)
SELECT * FROM 
(SELECT PRODUCTID, 'TXT' || TXTNUMMER || LANG LANGID, TXT FROM TST)
     PIVOT 
(MAX(TXT) FOR LANGID IN ('TXT1DE','TXT1IT','TXT2DE','TXT2IT'))

否则，如果未预定义语言数，则没有通用解决方案，因为Oracle不喜欢结果集中未知数量的列。但是，一些pl / sql函数，它将生成临时表并使用动态sql填充数据应该可以解决问题。

列中的行输出ad让Oracle中的SQL Developer中的其他列离开

1 个答案: