Subject Re: [firebird-support] Re: SELECT for get the number of contexts
Author Walter R. Ojeda Valiente
Thank you very much Dmitry for your answer, it is more clear now, however I still have some doubts.

According to Vlad Khorsun, each INSERT, UPDATE or DELETE has 2 contexts, cause of the variables NEW and OLD of the triggers. Is that not true?

The only way to know how many contexts a stored procedure has is looking at the source code and counting handly them?



On Sun, Sep 27, 2015 at 12:16 PM, Dmitry Yemanov dimitr@... [firebird-support] <> wrote:

26.09.2015 05:59, 'Walter R. Ojeda Valiente' wrote:
> Is there some SELECT that can give me the number of context a stored
> procedure has?

No, it's impossible.

> Other question:
> Which are the comands that count as context?
> I know: INSERT, UPDATE, DELETE, SELECT, UNION. Is there some more, JOIN
> or FETCH maybe?

It's not about commands, context is a table reference. A trivial INSERT
statement has one context, join of three tables has three contexts, etc.
Additionally, every UNION and GROUP BY produce one more context.

> And the last question:
> That number of 255, will be incremented in Firebird 3?