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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

Real-world example – prefix ranges

Another common problem involves assigning credit card numbers or telephone numbers. For example, with credit card numbers, we may need to perform additional checking for certain financial institutions, assuming that each institution is assigned a given range. In that case, we must check efficiently if a given credit card number belongs to a certain range.

The prefix range data type has been specifically designed to address this class of problems. This is available as a PostgreSQL extension at http://github.com/dimitri/prefix.

A warning—despite the similar name, prefix ranges cannot be implemented as range types.

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Publisher Resources

ISBN: 9781788474924Supplemental Content