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