--- title: "Deletions" id: tutorial-delete pg_version: "20devel" --- ## 2.9. Deletions Rows can be removed from a table using the `DELETE` command. Suppose you are no longer interested in the weather of Hayward. Then you can do the following to delete those rows from the table: DELETE FROM weather WHERE city = 'Hayward'; All weather records belonging to Hayward are removed. SELECT * FROM weather; city | temp_lo | temp_hi | prcp | date ---------------+---------+---------+------+------------ San Francisco | 46 | 50 | 0.25 | 1994-11-27 San Francisco | 41 | 55 | 0 | 1994-11-29 (2 rows) One should be wary of statements of the form ``` DELETE FROM tablename; ``` Without a qualification, `DELETE` will remove *all* rows from the given table, leaving it empty. The system will not request confirmation before doing this!