The query is correct but jdbc modify it !!

Question

my query is
SELECT o.ID_pagamento, SUM (m.valore) FROM operazioni o, movimenti_magazzino m WHERE m.ID_operazioni = o.ID AND m.quantita < 0 GROUP BY o.ID_pagamento
but jdbc automatically executes a second query:
SELECT COUNT(*), O.ID_PAGAMENTO, SUM (M.VALORE) FROM OPERAZIONI O, MOVIMENTI_MAGAZZINO M WHERE M.ID_OPERAZIONI = O.ID AND M.QUANTITA < 0
without the "GROUP BY" the query is wrong
what can I do?
(I use jdk 1.3)

Answer 1

huh?
So the only thing that you are doing is the first query. You are not creating the second one nor are you using a 3rd party library that creates it.
Then it has nothing to do with your first query. And so it doesn't matter whether it is wrong or not.
Now it could be that you are doing something in your java code that causes this. For example trying 'count' the number of rows returned by using 'last'. If so it suggests there is a bug in the driver.
But that doesn't matter. Obviously doing its own query. So you are saving nothing by using the last() method. So you might as well do the query yourself and do it correctly.