PL/SQL Developer删除重复的条目，但保留相关的列数据

您好我有一个查询，我需要删除或格式化输出显示的代码。请看下面：PL/SQL Developer删除重复的条目，但保留相关的列数据

查询：

select rfc."NUMBER", 
ag.current_pending_groups 
from smspadm.cm3rm1 rfc, smspadm.tv_approval_vw appr, smspadm.approvala1 ag 
Order By rfc."NUMBER"

当前的结果：

NUMBER CURRENT_PENDING_GROUPS 

C301609 Comm/AT&T Vert DCAB 
C302023 Collections DCAB 
C302023 Comm/AT&T Vert DCAB 
C302023 Fin-D2C-DNB DCAB 
C302023 Interactive Recording DCAB 
C302103 Collections DCAB 
C302103 Wintel Server DCAB 
C302103 Fin-D2C-DNB DCAB 
C301813 GTHRA Vert DCAB 
C301813 Tech Vert DCAB

期望的结果：或者：

NUMBER CURRENT_PENDING_GROUPS 

C301609 Comm/AT&T Vert DCAB 
C302023 Collections DCAB, Comm/AT&T Vert DCAB, Fin-D2C-DNB DCAB 
C302103 Collections DCAB, Wintel Server DCAB, Fin-D2C-DNB DCAB 
C301813 GTHRA Vert DCAB, Tech Vert DCAB

或者它应该是这样的：

NUMBER CURRENT_PENDING_GROUPS 

C301609 Comm/AT&T Vert DCAB 
C302023 Collections DCAB 
     Comm/AT&T Vert DCAB 
     Fin-D2C-DNB DCAB 
     Interactive Recording DCAB 
C302103 Collections DCAB 
     Wintel Server DCAB 
     Fin-D2C-DNB DCAB 
C301813 GTHRA Vert DCAB 
     Tech Vert DCAB

我应该用什么查询来获得这个结果？

来源

2013-03-18 Sandy

您可能会发现答案[这里]（http://stackoverflow.com/questions/1441971/oracle-normalized-fields -to-csv-string），[here]（http://stackoverflow.com/questions/4686543/sql-to-concatenate-column-values-from-multiple-rows），[here]（http：// stackoverflow/sql-table-type-in-oracle），[here]（http://stackoverflow.com/questions/10997854/ how-can-i-return-a-csv-string-from-pl-sql-table-type-in-oracle） stions/1120706/is-there-an-oracle-sql-query-that-aggregates-multiple-rows-into-one-row），[here]（http://stackoverflow.com/questions/468990/how-can -i-combine-multiple-rows-into-a-com-delimited-list-in-oracle） – 2013-03-18 15:30:25

第一变体

select 
    rfc."NUMBER", 
    wm_concat(ag.current_pending_groups) -- for 10g 
    -- listagg(ag.current_pending_groups,',') within group (order by ag.current_pending_groups) -- for 11g 
    as CURRENT_PENDING_GROUPS 
from smspadm.cm3rm1 rfc, smspadm.tv_approval_vw appr, smspadm.approvala1 ag 
group by rfc."NUMBER" 
Order By rfc."NUMBER"

第二个变体

select 
    case when 
    row_number() over (partition by rfc."NUMBER" order by ag.current_pending_groups) = 1 
    then 
    rfc."NUMBER" 
    end as "NUMBER", 
    ag.current_pending_groups 
from smspadm.cm3rm1 rfc, smspadm.tv_approval_vw appr, smspadm.approvala1 ag 
Order By rfc."NUMBER", ag.current_pending_groups

来源

2013-03-18 15:20:43

这可行，但Oracle不支持（见MOS 1336219.1），所以不应该推荐 – 2013-03-18 15:25:55

@ChrisSaxon - Don不要害怕WM_CONCAT :-)它工作得很好。 – 2013-03-18 15:31:55

如果我忘记提及我们正在使用Oracle 10G和PL/SQL 8.0.1 – Sandy 2013-03-19 16:46:08

SELECT rfc."NUMBER", 
    LISTAGG(ag.current_pending_groups, ', ') 
    WITHIN GROUP (ORDER BY rfc."NUMBER") "CURRENT_PENDING_GROUPS" 
    FROM smspadm.cm3rm1 rfc, smspadm.tv_approval_vw appr, smspadm.approvala1 ag 
    GROUP BY rfc."NUMBER"; 


SELECT rfc."NUMBER", 
    wm_concat(ag.current_pending_groups) 
    FROM smspadm.cm3rm1 rfc, smspadm.tv_approval_vw appr, smspadm.approvala1 ag 
    GROUP BY rfc."NUMBER";

来源

2013-03-18 18:04:34

上述解决方案对您无效吗？如果有的话，你会得到什么异常？ – 2013-03-19 17:08:24

不，它阻止我在“WITHIN GROUP”错误“ORA-00923：从关键字找不到预期的地方” – Sandy 2013-03-19 17:40:18

我已更新新的答案朋友 – 2013-03-19 17:50:17

PL/SQL Developer删除重复的条目，但保留相关的列数据

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