Solved

How to insert records to database

Posted on 2001-08-29
5
218 Views
Last Modified: 2010-04-06
Hi, all Experts

I am using ADO to connect to MS Access database. I created the following codes to insert a record:

procedure TForm1.Button1Click(Sender: TObject);
begin
    with dm.ADOQuery1 do
    begin
        Active := false;
        SQL.Clear;
        SQL.Add('insert into category (description) values (''category1'')');
        Active := true;
    end;
end;

But when I run the program and click on button1, it shows some errors:
1. The operation requested by the application is not supported by the provider;
2. CommandText does not return a result set.

Please help me to fix it.

Thanks
0
Comment
Question by:jl2001
5 Comments
 
LVL 14

Expert Comment

by:DragonSlayer
ID: 6439149
it's interesting to note that you need to enclose strings in a single quote ' instead of a double quote " when using TADOQuery components with Access databases (dunno, never tried ADO with other databases, I usually use native access for other databases)

so let's say you want to insert something that the user has typed in an edit box, try this:

with ADOQuery1 do
begin
  Close;
  SQL.Text := Format('INSERT INTO category (description) VALUES (%s)', [QuotedStr(Edit1.Text)]);
  Open;
end;

using SQL.Text eliminates the need to call Clear and Add.



Hope that helped!
DragonSlayer.
0
 
LVL 27

Expert Comment

by:kretzschmar
ID: 6439382
do not open, do execute your query
0
 
LVL 44

Accepted Solution

by:
CrazyOne earned 50 total points
ID: 6439398
Here is what kretzschmar is referring to, change the Active := True to ExecSQL

procedure TForm1.Button1Click(Sender: TObject);
begin
   with dm.ADOQuery1 do
   begin
       Active := false;
       SQL.Clear;
       SQL.Add('insert into category (description) values (''category1'')');
       ExecSQL;
   end;
end;
0
 
LVL 6

Expert Comment

by:Jaymol
ID: 6439486
Actually, DragonSlayers comment will fix the first error message and Kretzschmar's comment will fix the second error.

John.
0
 

Author Comment

by:jl2001
ID: 6442695
Thanks all. ExecSQL is the best way to fix my problem.
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
TVirtualStringTree  search using TEdit 7 106
Wininet read php file from internet issue 6 81
FMX enumerated colours 2 84
Convert a string into a TDateTime 5 50
Introduction I have seen many questions in this Delphi topic area where queries in threads are needed or suggested. I know bumped into a similar need. This article will address some of the concepts when dealing with a multithreaded delphi database…
Introduction Raise your hands if you were as upset with FireMonkey as I was when I discovered that there was no TListview.  I use TListView in almost all of my applications I've written, and I was not going to compromise by resorting to TStringGrid…
Internet Business Fax to Email Made Easy - With eFax Corporate (http://www.enterprise.efax.com), you'll receive a dedicated online fax number, which is used the same way as a typical analog fax number. You'll receive secure faxes in your email, fr…
Sending a Secure fax is easy with eFax Corporate (http://www.enterprise.efax.com). First, just open a new email message. In the To field, type your recipient's fax number @efaxsend.com. You can even send a secure international fax — just include t…

910 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

20 Experts available now in Live!

Get 1:1 Help Now