Randy Zwitch • 1/8/2015

Sessionizing Log Data Using SQL

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This article provides a detailed SQL tutorial for sessionizing log data, a common feature engineering task in data science. It explains how to use window functions like LAG() to define session boundaries based on time intervals and generate session IDs, using PostgreSQL as an example applicable to any SQL dialect supporting window functions.

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#sql #postgresql #Data Engineering
Sessionizing Log Data Using SQL

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