August 2010
Intermediate to advanced
526 pages
23h 39m
English
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Name
schema_version — Database schema change control
Common Usage
PRAGMA [database.]schema_version; PRAGMA [database.]schema_version =number;
Description
The schema_version pragma gets or sets the schema
version value that is stored in the database header. This is a
32-bit signed integer value that keeps track of schema changes.
Whenever a schema-altering command is executed (for example,
CREATE... or DROP...), this value is incremented.
This value is used internally by SQLite to keep a number of different caches consistent, as well as keep prepared statements consistent with current database format. Manually altering this value can result in a corrupt database.
See Also
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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.