Question

我有一个python脚本，它从外部服务器SQL数据库中提取数据，并根据事务编号求和值。我在清理结果集方面得到了一些帮助 - 这是一个巨大的帮助，但现在我遇到了另一个问题。

我的原始查询：

SELECT th.trans_ref_no, th.doc_no, th.folio_yr, th.folio_mo, th.transaction_date, tc.prod_id, tc.gr_gals FROM TransHeader th, TransComponents tc WHERE th.term_id="%s" and th.source="L" and th.folio_yr="%s" and th.folio_mo="%s" and (tc.prod_id="TEXLED" or tc.prod_id="103349" or tc.prod_id="103360" or tc.prod_id="103370" or tc.prod_id="113107" or tc.prod_id="113093")and th.trans_ref_no=tc.trans_ref_no;

返回我在此复制代码段的一组数据：

"0520227370","0001063257","2014","01","140101","113107","000002000"
"0520227370","0001063257","2014","01","140101","TEXLED","000002550"
"0520227378","0001063265","2014","01","140101","113107","000001980"
"0520227378","0001063265","2014","01","140101","TEXLED","000002521"
"0520227380","0001063267","2014","01","140101","113107","000001500"
"0520227380","0001063267","2014","01","140101","TEXLED","000001911"
"0520227384","0001063271","2014","01","140101","113107","000003501"
"0520227384","0001063271","2014","01","140101","TEXLED","000004463"
"0520227384","0001063271","2014","01","140101","113107","000004000"
"0520227384","0001063271","2014","01","140101","TEXLED","000005103"
"0520227385","0001063272","2014","01","140101","113107","000007500"
"0520227385","0001063272","2014","01","140101","TEXLED","000009565"
"0520227388","0001063275","2014","01","140101","113107","000002000"
"0520227388","0001063275","2014","01","140101","TEXLED","000002553"

更新的查询运行两次并加入trans_ref_no，这是结果集中的第一个位置，因此前6行压缩为3，最后4行压缩为2。我遇到的问题是将交易号0520227384压缩为两行。

SELECT t1.trans_ref_no, t1.doc_no, t1.folio_yr, t1.folio_mo, t1.transaction_date, t1.prod_id, t1.gr_gals, t2.prod_id, t2.gr_gals FROM (SELECT th.trans_ref_no, th.doc_no, th.folio_yr, th.folio_mo, th.transaction_date, tc.prod_id, tc.gr_gals FROM Tms6Data.TransHeader th, Tms6Data.TransComponents tc WHERE th.term_id="00000MA" and th.source="L" and th.folio_yr="2014" and th.folio_mo="01" and (tc.prod_id="103349" or tc.prod_id="103360" or tc.prod_id="103370" or tc.prod_id="113107" or tc.prod_id="113093") and th.trans_ref_no=tc.trans_ref_no) t1 JOIN (SELECT th.trans_ref_no, th.doc_no, th.folio_yr, th.folio_mo, th.transaction_date, tc.prod_id, tc.gr_gals FROM Tms6Data.TransHeader th, Tms6Data.TransComponents tc WHERE th.term_id="00000MA" and th.source="L" and th.folio_yr="2014" and th.folio_mo="01" and tc.prod_id="TEXLED" and th.trans_ref_no=tc.trans_ref_no) t2 ON t1.trans_ref_no = t2.trans_ref_no;

以下是新查询为交易号0520227384返回的内容：

"0520227384","0001063271","2014","01","140101","113107","000003501","TEXLED","000004463"
"0520227384","0001063271","2014","01","140101","113107","000003501","TEXLED","000005103"
"0520227384","0001063271","2014","01","140101","113107","000004000","TEXLED","000004463"
"0520227384","0001063271","2014","01","140101","113107","000004000","TEXLED","000005103"

我需要摆脱的是一组压缩线，在这组中，需要删除秒和第三行：

"0520227384","0001063271","2014","01","140101","113107","000003501","TEXLED","000004463"
"0520227384","0001063271","2014","01","140101","113107","000004000","TEXLED","000005103"

如何从更新的查询结果集中过滤这些行？

Answer 1

我认为，答案是：

(... your heavy sql ..) group by 7

或

(... your heavy sql ..) group by t1.gr_gals

根据行中的索引过滤一组数据

1 个答案: