PostgreSQL Vacuum Table

Source: Internet
Author: User
Tags postgresql

2down vote

According to documentation

VACUUM reclaims storage occupied by dead tuples.

But according to this post

Dead rows is deleted rows that would later be reused for new rows from inserts or UPDATEs. Some dead Rows (or reserved free space) can is particularly useful for hot (heap-only tuples) updates that can reuse space In the same data page efficiently

PostgreSQL Vacuum Table

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