(FB 2.5)

Hello! I have some temp tables in order to select records. Like this:

CREATE GLOBAL TEMPORARY TABLE SEL_STO (
    ID  INTEGER NOT NULL
) ON COMMIT DELETE ROWS;

ALTER TABLE SEL_STO ADD CONSTRAINT PK_SEL_STO PRIMARY KEY (ID);

My question is: it makes sense having a PK in this table? The statics, shows always "0"

How is the selectivity of that index?

Thanks!!