Hi maurizio,
I think your query will be a bit more complex.
It will have to look something like:
Select StudentID from STUDENTS where
StudentID IN
(Select StudentID from STUDENT-LANGUAGE where LanguageID = "C")
AND
StudentID IN
(Select StudentID from STUDENT-LANGUAGE where LanguageID = "ADA")
Just add each new criteria as you iterate through the listbox.
Ray
ma****************@gmail.com wrote:
a student know one ore more programming language
in a mask i select from a list_box one or more language and i send ad
parameter to a query that extract the student that know all this
language.
i use something like
table: Student,Language,Student- Language
query:
...
[Student- Language].Id_Lang
LikeNz([Forms]![Student-Query-param]![Lang_l_box],"*")
but if i select "ADA and C" the query report student that know :C or
ADA or C and ADA.
how i can do for got only the student that know "C *and* ADA"?.
grazie.
