Re: union query format
От | Joel Burton |
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Тема | Re: union query format |
Дата | |
Msg-id | JGEPJNMCKODMDHGOBKDNIEHBCLAA.joel@joelburton.com обсуждение исходный текст |
Ответ на | union query format (Robert Wynter <rgwynter@rci.rogers.com>) |
Список | pgsql-sql |
> Hi I'm trying to combine 3 query's in a union query as follows: > > rowdate nco nca nch aht asa svl > %abandon > > With Query 1; > > 04/01/02 1000 500 500 450 23 .23 .50 > 04/02/02 2000 500 1500 450 23 .23 .50 > > plus Query 2; > > wtd 3000 1000 2000 450 23 .23 .50 > > and Query 3; > > mtd 3000 1000 2000 450 23 .23 .50 > > > I have 2 problems once the Union Query has run. > 1. because Query 2 & 3 are text, it's forcing Query 1 into text and the > date order is all messed up. > 2. I need to formate the fileds for svl & % abandon as a percentage. Something like: SELECT rowdate AS sort, rowdate::text, nco, ..., asa * 100 || '%' FROM query1 UNION SELECT 'infinity'::timestamp, rowdate, ... FROM query2 UNION SELECT 'infinity'::timestamp, rowdate, ... FROM query2 ORDER BY 1 This will let you sort by the first column as dates (keeping wtd and mtd at the end). To show a number as percentage, x * 100 appended with '%' works fine. See to_char() if you need more control.
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