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When I try and do an update of a row in a table for which there is a foreign
key reference, I get an exception stating that "Cannot delete value, XXX. In
use by column A.B".

Am I doing something wrong, or can Foreign Keys not be used in tables that
are being updated?

Thanks
James

--

Example:

; First load the JDBC driver and open a database.
d org.enhydra.instantdb.jdbc.idbDriver;
o jdbc:idb=blah.prp;

; Record all results
e SET EXPORT "export0.txt" FIXEDLENGTH COLNAMEHEADER ROWNUMBERS CONTROLCOL
SUMMARYHEADER;

e create table BAR (
  ID	 int,
  NAME	 CHAR(32)
);

e create table FOO (
  ID	 int foreign key references BAR(ID) on delete cascade,
  NAME	 char(32)
);

e insert into BAR(ID, NAME) values(101, "fred");
e insert into BAR(ID, NAME) values(102, "joe");

e insert into FOO(ID, NAME) values(101, "fred2");
e insert into FOO(ID, NAME) values(102, "joe2");

; This fails with "Cannot delete..." exception
e update BAR set NAME="newfred" where ID=101;

; The End
c close;

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