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16.5: DELETE Statement

  • Page ID
    92225
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    The DELETE statement removes rows from a record set. DELETE names the table or view that holds the rows that will be deleted and only one table or row may be listed at a time. WHERE is  a standard WHERE clause that limits the deletion to select records.

    The DELETE syntax looks like this.

    DELETE [FROM] {table_name | view_name }
    [WHERE clause]

    The rules for the DELETE statement are:

    1. If you omit a WHERE clause, all rows in the table are removed (except for indexes, the table, constraints).
    2. DELETE cannot be used with a view that has a FROM clause naming more than one table. (Delete can affect only one base table at a time.)

    What follows are three different DELETE statements that can be used.

    1. Deleting all rows from a table.

    DELETE
    FROM Discounts

    2. Deleting selected rows:

    DELETE
    FROM Sales
    WHERE stor_id = ‘6380’

    3. Deleting rows based on a value in a subquery:

    DELETE FROM Sales
    WHERE title_id IN
    (SELECT title_id FROM Books WHERE type = ‘mod_cook’)

    16.5: DELETE Statement is shared under a not declared license and was authored, remixed, and/or curated by LibreTexts.

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