On 2018-05-04 18:56, blackfalconsoftw...@outlook.com [firebird-support] wrote: > I am not sure if I understand your explanation here... > > 1... > Why would I test the input parameter, "PI_KEY_IN" for each row? I am > only doing this to ensure that the client never sends an input value > of zero(0).
That may be what you want to do, but it is not what your code will actually do. And you may want to consider doing that before producing rows, btw. > 2... > In the other email you sent you stated that... > "A FOR .. DO is a loop construct, which either execute a single > statement for each iteration (each row) in the loop, or a block of > statements delimited by BEGIN and END." > > However. if this follows as most constructs, the "DO" part is the end > statement to the "FOR". Or is this better understood as "FOR" > everything I do here, "DO" the following... ??? No, the DO is not the end of the FOR, it signals that what follows is done for each row produced by the FOR. In short: FOR <something that produces rows> DO <statement or block> See also: - WHILE: https://www.firebirdsql.org/file/documentation/reference_manuals/fblangref25-en/html/fblangref25-psql-coding.html#fblangref25-psql-while - FOR SELECT: https://www.firebirdsql.org/file/documentation/reference_manuals/fblangref25-en/html/fblangref25-psql-coding.html#fblangref25-psql-forselect - FOR EXECUTE STATEMENT: https://www.firebirdsql.org/file/documentation/reference_manuals/fblangref25-en/html/fblangref25-psql-coding.html#fblangref25-psql-forexec Mark
