What is the sql statement for doing this?

Question

Hi,
I am currently doing a simple search engine that allows a user to key in a filename and display all the files' name close to keyed filename(the first two letters are the same).What is the proper sql statement to select from Document according to DocumentType and the first two letters of the filename? Am i doing it the right way? I am currently use Access 2002, dunno if it will affects me.Thanks in advance
[What i did]
String filename="doc,txt"
SELECT DocumentType from Rule where UserType='1' and Action='Search';
DocumentType=1,5,9,13,17,21,25,29,33,37,41,45 // This is all the document Type the user can see.
Next i used StringTokenizer break the DocumentType.
DocumentType[0]=1;
DocumentType[0]=5;
SELECT * from Document where DocumentType and Name <<< I want to select from Document according to DocumentType and the first two letters of the filename

Answer 1

One more try - from what I can follow?
If I assume you have a table named for example "UserRules"
which has fields UserID,UserType,UserAction
and has records like this that controls the document types
a user is allowed to see
UserID UserType Action
TOM 1 Search
BILL 7 Search
ROY 2 Search
And if I assume you have a table named for example "AllowedUserDocumentTypes"
which has fields UserType,DocumentTypes
and has records like this that controls the document types
a user is allowed to see
UserType DocumentTypes
1 1,3,4,5,6,19
2 7,9,12,18
3 1,19,33,27
And you have the document table which has
fields are DocNo,Name,Title,Date,Filename,DocumentType
and it has records like this
DocNo Name Title Date Filename DocumentType
12345 BILL Cars CarTypes 18
12346 ROY Trucks TruckTypes 2
12347 TOM Toys ToyTypes 17
12345 JACK Car Colors CarColors 19
12345 TOM Car Shapes CarShapes 7
Then the select statement
Select DocumentTypes from AllowedUserDocumentTypes
join UserRules where UserRules.UserType = AllowedUserDocumentTypes.UserType
and UserRules.UserID = 'ROY' and UserRules.Action = 'Search';
will return 7,9,12,18
If the DocumentType field is numeric and the user entered "CarCrap" the
select statement would have to look like this
SELECT * from Document
where left(Filename,2) = 'Ca' and DocumentType in (7,9,12,18);
If the DocumentType field is say varchar
select statement would have to look like this
SELECT * from Document
where left(Filename,2) = 'Ca' and DocumentType in ('7','9','12','18');
You will have to build these select statements related to the user.
Note you should also allow for upper and lower case differences. I
would suggest you convert the user entry into uppercase and do a select
like below
SELECT * from Document
where Ucase(left(Filename,2)) = 'CA' and DocumentType in (7,9,12,18);
This is all written from memory, not tested and I have not done this
in several years.
I was showing approximately how to build the statements before.
rykk