November 2019
Beginner to intermediate
470 pages
11h 59m
English
Content preview from Mastering PostgreSQL 12 - Third Edition
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Matching patterns in time series
At the time of writing, the most recent SQL standard (SQL 2016) provides a feature that's designed to find matches in time series. So far, only Oracle has implemented this functionality in its latest version of the product.
At this point, no other database vendor has followed them and added similar functionality. If you want to model this state-of-the art technology in PostgreSQL, you have to work with the windowing function and subselects. Matching time series patterns in Oracle is pretty powerful; there isn't just one type of query to achieve this in PostgreSQL.
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