Re: -query sql

Поиск
Список
Период
Сортировка
От John McKown
Тема Re: -query sql
Дата
Msg-id Pine.LNX.4.21.0010091915330.28048-100000@linux2.johnmckown.net
обсуждение исходный текст
Ответ на -query sql  ("Nema, Vivek" <nema@softlink.ch>)
Список pgsql-sql
On Tue, 3 Oct 2000, Nema, Vivek wrote:

> Hi!
>    a small query may be u can help me.
>  i just wanted to compare 2 columns in 2 tables.how can i do it in sql
> statement.i know it is possible somehow i am not able to write my query.
> i am using RDB 6.0
> 
> Any pointer or help will be highly appreciated.
> 

What is RDB? This list is for PostgreSQL. However, in general, suppose you
have column1 in table1 and column2 in table2, you can select rows where
they are equal by doing something like:

SELECT table1.column1, table1.another, table2.thisone,
FROM table1, table2
WHERE table1.column1=table2.column2;

Change the information you want in the first line of the SELECT. I just
made up some names.

Hope this helps,
John



В списке pgsql-sql по дате отправления:

Предыдущее
От: Josh Berkus
Дата:
Сообщение: Re: "Delete before" in ms sql?
Следующее
От: Michael Fork
Дата:
Сообщение: Re: AW: Table Attribute Help