I know I need to think a different approach of what execute blocks does on
Firebird.
What I was trying to was just let them the way they were wrote, because
their results are correct and with more time replace them to a new way.
But, if that way cannot be used, I´ll probably write some hundred of
functions right now and use them, because this way works for sure. And then,
with more time to spend, I´ll replace them one by one.
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