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Calculating WAL Generation for DML Operations in PostgreSQL

This story is from 2026-10-12. It is preserved in the archive; the latest stories are on the live feed.

PostgreSQL provides the EXPLAIN command with the ANALYZE and WAL options to measure the WAL generated by a DML operation. This feature helps database administrators investigate the impact of INSERT, UPDATE, and DELETE statements on WAL generation. In this article, we use EXPLAIN (ANALYZE, WAL) to m…

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  1. 2026-10-12 17:13 · DEV Community — AI
    Calculating WAL Generation for DML Operations in PostgreSQL

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