documentation for joins

Started by MJSabout 24 years ago4 messagesdocs
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#1MJS
M.Sacha@elka.pw.edu.pl

Hi!
I found that there's no any suffiction documentation for joins. Are they
supported in Postgres? If so, how? How to make outter joins or natural
joins? Is the where clause the only way to join tables?

Please help me or show the place where I can get the answers.

MJS

#2Roberto Mello
rmello@cc.usu.edu
In reply to: MJS (#1)
Re: documentation for joins

On Sat, Apr 13, 2002 at 11:24:30PM +0200, MJS wrote:

Hi!
I found that there's no any suffiction documentation for joins. Are they
supported in Postgres? If so, how? How to make outter joins or natural
joins? Is the where clause the only way to join tables?

Sure they are. You didn't look very hard apparently.

PostgreSQL 7.2.1 User's Guide
2. Queries
2.2. Table Expressions
2.2.1. FROM clause
2.2.1.1. Joined Tables
2.2.2. WHERE clause

http://www.postgresql.org/idocs/index.php?queries.html

How about the reference manual? It has a whole spew on joins on the
documentation for SELECT.

http://www.postgresql.org/idocs/index.php?sql-select.html

-Roberto

-- 
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  Roberto Mello - Computer Science, USU - http://www.brasileiro.net/ 
       http://www.sdl.usu.edu/ - Space Dynamics Lab, Developer    
In Borland you are never bored!
#3Hannu Krosing
hannu@tm.ee
In reply to: MJS (#1)
Re: documentation for joins

On Sat, 2002-04-13 at 23:24, MJS wrote:

Hi!
I found that there's no any suffiction documentation for joins. Are they
supported in Postgres? If so, how? How to make outter joins or natural
joins? Is the where clause the only way to join tables?

Please help me or show the place where I can get the answers.

Try:

http://www.postgresql.org/idocs/index.php?tutorial-join.html

----------
Hannu

#4Bruno Wolff III
bruno@wolff.to
In reply to: MJS (#1)
Re: documentation for joins

On Sat, Apr 13, 2002 at 11:24:30PM +0200,
MJS <M.Sacha@elka.pw.edu.pl> wrote:

Hi!
I found that there's no any suffiction documentation for joins. Are they
supported in Postgres? If so, how? How to make outter joins or natural
joins? Is the where clause the only way to join tables?

Please help me or show the place where I can get the answers.

Joins are documented under the 'select' command.
Outer joins have been available since version 7.1.