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Documentation
/ SQL
/ Statements
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1.1 (stable)
VACUUM Statement
The VACUUM statement alone does nothing and is at present provided for PostgreSQL-compatibility.
The VACUUM ANALYZE statement recomputes table statistics if they have become stale due to table updates or deletions.
Examples
No-op:
VACUUM;
Rebuild database statistics:
VACUUM ANALYZE;
Rebuild statistics for the table and column:
VACUUM ANALYZE memory.main.my_table(my_column);
Not supported:
VACUUM FULL; -- error
Reclaiming Space
The VACUUM statement does not reclaim space.
For instruction on reclaiming space, refer to the “Reclaiming space” page.