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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

There’s more…

Conditional statements are usually part of flow control statements, which include also iterations.

While iterating is not directly supported by psql, a similar effect can be achieved in other ways. For instance:

  • A script, called for instance file.sql, can be iterated by adding some lines at the end, as in the following fragment:
SELECT /* add a termination condition as appropriate */ AS do_loop\gset\if do_loop\ir file.sql\endif
  • Instead of iterating, you can follow the approach described later in this chapter in the recipe Performing actions on many tables.
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Publisher Resources

ISBN: 9781788474924Supplemental Content