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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

How it works…

In psql, you can enter the following two types of commands:

  • psql meta-commands
  • SQL

A meta-command is a command for the psql client, whereas SQL is sent to the database server. An example of a meta-command is \q, which tells the client to disconnect. All lines that begin with \ (backslash) as the first nonblank character are presumed to be meta-commands of some kind.

If it isn't a meta-command, then it's SQL. We keep reading SQL until we find a semicolon, so we can spread SQL across many lines and format it any way we find convenient.

The help command is the only exception. We provide this for people who are completely lost, which is a good thought; so let's start from there ourselves.

There are two types of help commands, ...

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Publisher Resources

ISBN: 9781788474924Supplemental Content