September 26, 2024: PostgreSQL 17 Released!
Unsupported versions: 6.5
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Deletions

Deletions are performed using the delete command:

DELETE FROM weather WHERE city = 'Hayward';
    
All weather recording belongs to Hayward is removed. One should be wary of queries of the form
DELETE FROM classname;
    
Without a qualification, delete will simply remove all instances of the given class, leaving it empty. The system will not request confirmation before doing this.