January 2002
Intermediate to advanced
640 pages
16h 39m
English
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Show
Displays the values of runtime variables.
Synopsis
SHOW nameParameters
nameThe name of a runtime variable.
Results
SHOW VARIABLEThe message returned after the
SHOWcommand returns.ERROR: Option 'name' is not recognizedThe error returned if the variable specified (
name) does not exist.ERROR: permission deniedThe error returned if you do not have the permissions necessary to view this information.
NOTICE: Time zone is unknownThe notice returned if you request to show the
TIMEZONEvariable when theTZorPGTZenvironment variable is not set.
Description
Use the SHOW command to display the current settings for a specified
runtime variable. The variables in question are specified using the SET
command or automatically determined during server startup.
Examples
The following example displays the current transaction isolation level:
booktown=# SHOW TRANSACTION ISOLATION LEVEL;
NOTICE: TRANSACTION ISOLATION LEVEL is SERIALIZABLE
SHOW VARIABLEThe next example displays the current date formatting style:
booktown=# SHOW DATESTYLE;
NOTICE: DateStyle is ISO with US (NonEuropean) conventions
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.