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PostgreSQL 10 Administration Cookbook - Fourth Edition
book

PostgreSQL 10 Administration Cookbook - Fourth Edition

by Simon Riggs, Gianni Ciolli
May 2018
Intermediate to advanced content levelIntermediate to advanced
576 pages
30h 25m
English
Packt Publishing
Content preview from PostgreSQL 10 Administration Cookbook - Fourth Edition

Getting ready

As an example, we create a script that does some work on a given table. We will keep it simple, because we just want to show how variables work.

For instance, we might want to add a text column to a table, and then set it to a given value. So we write the following lines into a file called vartest.sql :

ALTER TABLE mytable ADD COLUMN mycol text;UPDATE mytable SET mycol = 'myval';

The script can be run as follows:

psql -f vartest.sql
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Publisher Resources

ISBN: 9781788474924Supplemental Content