Re: [SQL] combining a single field in two tables into one column.

Поиск
Список
Период
Сортировка
От Chris Bitmead
Тема Re: [SQL] combining a single field in two tables into one column.
Дата
Msg-id 3729D728.281FBCDC@bigfoot.com
обсуждение исходный текст
Ответ на combining a single field in two tables into one column.  (JT Kirkpatrick <jt-kirkpatrick@mpsllc.com>)
Список pgsql-sql
You need something along the lines of 
SELECT subnum FROM subs UNION SELECT vnum FROM vend;


JT Kirkpatrick wrote:
> 
> i come seeking wisdom. . .
> 
> i have two tables, one for subcontractors and another for vendors.  subs
> have a primary key of subnum int4, vendors a primary key of vnum int4.  i
> need to create a query that allows me to see a complete list of these
> numbers in a single column.  for instance, subnum (all begin with 9) has
> values 90001, 90002, 90003 (only three records for the example), and vnum
> (all begin with 2) has values 20001, 20002.  i'd like my query result to
> show:
> 
> 90001
> 90002
> 90003
> 20001
> 20002
> 
> this does NOT work:  select a.subnum as z, b.vnum as z from subs a, vend b;
> NOR does: select a.subnum, b.vnum from subs a, vend b;
> 
> by the way, the two tables DO NOT relate to each other (i.e., 90001 does
> not have anything to do with 20001). . .
> 
> TIA, jt

-- 
Chris Bitmead
http://www.bigfoot.com/~chris.bitmead
mailto:chris.bitmead@bigfoot.com


В списке pgsql-sql по дате отправления:

Предыдущее
От: Tom Lane
Дата:
Сообщение: Re: [SQL] finding the most recent records
Следующее
От: "Ryan Bennetts"
Дата:
Сообщение: linux scripting