I ve got the following objects:
CREATE FUNCTION CONSTFUNC RETURN INT
DETERMINISTIC
AS
BEGIN
RETURN 1;
END;
CREATE TABLE "FUNCTABLE" (
"ID" NUMBER(*,0) NOT NULL,
"VIRT" NUMBER GENERATED ALWAYS AS ("CONSTFUNC"()) NULL
);
however, the functable => constfunc dependency is not listed in all_ or user_ dependencies. Is there anywhere I can access this dependency information in the dictionary?
I just created your function and table in 11G (11.1) and can confirm your findings. I couldn t find anything in the Oracle docs either.
If you drop the function, the table status remains "VALID", but when you select from the table you get ORA-00904: "CHAMP"."CONSTFUNC": invalid identifier. This suggests that Oracle itself isn t aware of the dependency.
It might be worth asking this question on asktom.oracle.com, because Tom Kyte will have access to more information - he may even raise a bug about it if need be.
The expression used to generate the virtual column is listed in the DATA_DEFAULT column of the [DBA|ALL|USER]_TAB_COLUMNS views.
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