August 2010
Intermediate to advanced
526 pages
23h 39m
English
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Name
freelist_count — Return number of free pages in database file
Common Usage
PRAGMA [database.]freelist_count;Description
The freelist_count pragma returns a single integer
indicating how many database pages are currently marked as free
and available (contain no valid data). These pages can be
recovered by vacuuming the database.
See Also
auto_vacuum, incremental_vacuum, VACUUM [SQL Cmd, Ap C]
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.