Re: Find min year and min value
От | Stefan Schwarzer |
---|---|
Тема | Re: Find min year and min value |
Дата | |
Msg-id | BA560C64-608A-44B7-BD8D-0581E825F00D@grid.unep.ch обсуждение исходный текст |
Ответ на | Re: Find min year and min value (Richard Huxton <dev@archonet.com>) |
Ответы |
Re: Find min year and min value
Re: Find min year and min value Re: Find min year and min value Re: Find min year and min value |
Список | pgsql-general |
> SELECT year, value FROM ... I feel ashamed.... such a simple solution... gush.... Thanks for that! Unfortunately it doesn't stop there... If I want to find the "common smallest year" for two given variables (say, I have years 1970, 1971,.... 2005 for variable 1 (GDP) and 1980, 1981,... 2003) for variable 2 (Fish Catch) ). It should come up with 1980 for a given country, if there is a value for that year in both variables. Otherwise 1981, etc... How would I do that? I really have no clue... (my table looks something like this: id_variable | year | value | id_country --------------------------------------- 1 | 2001 | 123 | 1 1 | 2002 | 125 | 1 1 | 2003 | 128 | 1 1 | 2004 | 132 | 1 1 | 2005 | 135 | 1 1 | 2001 | 412 | 2 1 | 2002 | 429 | 2 1 | 2003 | 456 | 2 1 | 2004 | 465 | 2 1 | 2005 | 477 | 2 .... 2 | 1980 | 83 | 1 2 | 1981 | 89 | 1 .... ) Thanks for any hints, Stef
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