Access 2007 query that choose all values when no input

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I've write this query in an access 2007 database:

SQL

SELECT Ordini.ID, Ordini.Data, Clienti.Cognome, Clienti.Nome, DettagliOrdine.IDProdotto, Prodotti.Descrizione, Prodotti.Prezzo, DettagliOrdine.Quantità, ([Prezzo]*[Quantità]) AS Totale, Ordini.Note, Produttori.Nome, Ordini.Ordinato, Ordini.Arrivato, Ordini.Ritirato
FROM Produttori INNER JOIN (Prodotti INNER JOIN ((Clienti INNER JOIN Ordini ON Clienti.ID = Ordini.IDCliente) INNER JOIN DettagliOrdine ON Ordini.ID = DettagliOrdine.IDOrdine) ON Prodotti.ID = DettagliOrdine.IDProdotto) ON Produttori.ID = Prodotti.IDFornitore
WHERE (((Clienti.Cognome)=[Cognome: ]) AND ((Clienti.Nome)=[Nome: ]) AND (([Cognome: ]) Is Not Null))ORDER BY Ordini.Data;

This query brings up an input box for the COGNOME and NOME field of research.

I need that if user write nothing (press ENTER) for that field research tag is . (all value of that field).

es. If user write a COGNOME but not a NOME (press ENTER when popup NOME window) research to be done on all the NOME with that "COGNOME".

How can I do this?

Posted 20-Nov-13 6:16am

Domus1919

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Maciej Los · Accepted Answer · 2013-11-20T08:54:00

Solution 1

There are 2 options:
1) building queries "On the Fly" using userform and VBA[^] or
2) using IIF function[^] with declaration of PARAMETERS[^]

SQL

PARAMETERS param1 CHAR, param2 CHAR;
SELECT ...
FROM ...
WHERE Field1 = IIF([param1] IS NULL,'*',[param1]) AND Field2 = IIF([param2] IS NULL, '*', [param2])

Not tested, but should works fine.

Posted 20-Nov-13 8:54am

Maciej Los

Comments

Domus1919 22-Nov-13 3:59am

don't work...don't select inserted field in popup window, or select all always...please help me...

Maciej Los 22-Nov-13 4:19am

So... Use the first option ;)