Ms Access query from Java

Question

I'm trying to finish a program but there are some bugs in accessing the database, the connection opened well and i can retreive any data from the data base but when i wrote this sql statement:
rs = stmt.executeQuery("Select number,Type, sum(charge) from invoice where date between '" + d1 +"' and '"+ d2 + "' Group By number, Type;");
an error was appeared with:
"data type mismatch in criteria expression"
the d1 and d2 are variables with date datatype
in invoice table "date" is an attribute with date/time datatype..
anyone to help me??
thanks all

Answer 1

the real problem here that in java d1 and d2 areNo the real problem is your refusal to use Prepared Statements.
converted from from string to date data type
so it consists of: dayname, day , month, hour, and
year
and in MS Access the date attribute is consist of
day, month and year only.. If you used Prepared Statements then this would not matter.
so when i compare these d1and d2 in java with date in
ms access it cause miss match data type error..
how to make d1,d2 in the format "dd/mm/yyyy" and
still date data type???
USE PREPARED STATEMENTS.
java.sql.PreparedStatement
Look that up. Annie gave you an example in her post.