Question

delete from table1 where user_id = ...
delete from table2 where user_id = ...
delete from table3 where user_id = ...
delete from table4 where user_id = ...

I try to make from this 1 query, but not result.

Answer 1

I think that will work

DELETE table1.*, table2.*,table3.* FROM table1, table2, table3 
WHERE table1.user_id=? and table2.user_id=? and table3.user_id=?; 

There’s another solution that might work:

DELETE FROM table1, table2, table3 
USING table1 
    INNER JOIN table2 USING(user_id) 
    INNER JOIN table3 USING(user_id) 
WHERE table1.user_id= ?

Anyway, you can define foreign key constraints on the tables with ON DELETE CASCADE option, then deleting a record from parent table removes all records from child tables.