Postgresql constraint

Question

I cannot seem to get this right, I am trying to modify a field to be a foreign key, with cascading delete... what am i doing wrong?

ALTER TABLE my_table 
ADD CON         


        

Answer 1

Just guessing: shouldn't you add a foreign key instead of a constraint?

ALTER TABLE my_table ADD FOREIGN KEY (my_field) REFERENCES my_foreign_table;

Postgresql reference