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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

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The output of a materialized view is physically stored like a regular table, and the analogy doesn't stop here. In both cases, it is possible to create indexes to speed up queries.

A materialized view will not automatically change when its constituent tables change. For that to happen, you must issue the following:

REFRESH MATERIALIZED VIEW m_dish;

This replaces all the contents of the view with newly computed ones.

It is possible to quickly create an empty materialized view and populate it later. Just add WITH NO DATA at the end of the CREATE MATERIALIZED VIEW statement. Obviously, the view cannot be used before being populated, which you can do with REFRESH MATERIALIZED VIEW, as you just saw.

A materialized view cannot be ...

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Publisher Resources

ISBN: 9781788474924Supplemental Content