[postgres 7.0.2, x86 linux]
I am trying to use a trigger to perform an sql 'notify' command.
I do something like:
CREATE FUNCTION run_changed() RETURNS opaque AS ' declare nm text; begin nm := NEW.run_name; notify nm
return null; end;
' LANGUAGE 'plpgsql';
create trigger run_changed_tr after update on runs for each row execute procedure run_changed();
BUT, when I update the table, I get: ERROR: parser: parse error at or near "$1"
It looks like the *name* (or it's alias here: $1.run_name), not the *value* of the variable nm,
is passwd to the notify command. Since notify only takes a name, not a string,
I don't see how to proceed.
Is there some way in plsql to construct a string and have it executed in sql?
disappointed in plsql,George
--
George Young, Rm. L-204 gry@ll.mit.edu
MIT Lincoln Laboratory
244 Wood St.
Lexington, Massachusetts 02420-9108 (781) 981-2756
