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有没有办法从一个表中获得每个记录的列身体=“嘿”与下两个记录谁拥有相同的“dest “?但是,每当同一个目标在body =“嘿”中得到时,我需要这条记录,而后面的两条记录再次匹配相同的目标。SQL(PostgreSQL):选择Rows等于下列两个记录匹配相同的密钥
一个分区不帮我,因为我不能“重置”它的下一对结果谁拥有相同的目标和身体=“嘿”。
id | dest | body | received
1 | A | Hey | 2016-10-28 01:00:00
5 | B | Hey | 2016-10-28 02:00:00
6 | B | X11 | 2016-10-28 03:00:00
8 | A | Y11 | 2016-10-28 04:00:00
11 | A | Y12 | 2016-10-28 05:00:00
20 | C | Hey | 2016-10-28 06:00:00
22 | A | Y13 | 2016-10-28 07:00:00
25 | B | X12 | 2016-10-28 08:00:00
26 | A | Hey | 2016-10-28 09:00:00 ! same "dest", if body = "Hey" we need it
29 | A | Y22 | 2016-10-28 10:00:00
33 | B | X13 | 2016-10-28 11:00:00
35 | A | Y33 | 2016-10-28 12:00:00
结果:
1 | A | Hey | 2016-10-28 01:00:00
8 | A | Y11 | 2016-10-28 04:00:00
11 | A | Y12 | 2016-10-28 05:00:00
5 | B | Hey | 2016-10-28 02:00:00
6 | B | X11 | 2016-10-28 03:00:00
20 | B | X12 | 2016-10-28 08:00:00
20 | C | Hey | 2016-10-28 06:00:00
26 | A | Hey | 2016-10-28 09:00:00
29 | A | Y22 | 2016-10-28 10:00:00
35 | A | Y33 | 2016-10-28 12:00:00
...
在未来2相同的'dest'记录也有什么happense'Hey'? – Nikhil
@Nikhil它们应该显示在结果集中 – nenad007