as noted above, this isn't the best place for SQL questions but here's how you would do that in recent (>= 4.0) versions of MySQL: 
DELETE FROM table1, table2, table3 
USING table1 
    INNER JOIN table2 USING(data_id) 
    INNER JOIN table3 USING(data_id) 
WHERE table1.data_id = 111

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Starting in MySQL 4.1 you can use table aliases (must be consistent in both the FROM and USING clauses

In reply to Re: (OT) MySQL: delete from multiple tables by bpphillips
in thread (OT) MySQL: delete from multiple tables by Anonymous Monk

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