Jure Kodzoman wrote:
What i would like to do is create a trigger or a constraint which would on delete of an entry from table1 also deleted all entries containing code from table1 in table_rel. When i try to put a constraint via PgAdmin3 it says it can't do it because 't1code' is not primary key or unique. I understand the error, but what i would like to know is how to delete all fields from table_rel containing the 'table1' vaule being equal to 'code' being deleted from table1.
You put two foreign keys ON table_rel, referencing table1 and table2. Set both to delete on cascade and you're done.
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