Shruthi A <shruthi.i...@gmail.com> wrote: > I have 2 tables (A and B) where the table B has a foreign key reference to > table A. Like this:
> create table A (x int primary key); > create table B (y int primary key, z int references A (x) ); > As you can see, i've not specified any further 'on delete' clause to the > foreign key constraint like 'on delete cascade' or 'on delete restrict' or > 'on delete set null' or 'on delete set default'. This means that the > default behavior is followed ie 'on delete restrict' holds by default. > Now I want to delete a particular row from table A. Is there any way I can > force deletion of all the dependent rows in table B? > Note that the tables have already been created in the above manner and > populated. I want to do this deletion through DML only ie without any > change in the table definition. "DELETE FROM B WHERE z = 'your x';"? Tim -- Sent via pgsql-sql mailing list (pgsql-sql@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-sql
