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DBMemo and SQL server text

Posted on 1998-04-06
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Last Modified: 2008-02-01
DBMemo and SQL server text
The SQL database contains a table with text.
The text will be dbmemo in VCL.
UpdateSQL insert by "insert xtable('the_text')
values :thetext,the error told us
Field the_text is of an unsupport type.
Do we have any method to solve the problem? How?
Thank you.
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Question by:mathematics
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ronit051397 earned 100 total points
ID: 1361308
This is from Borland forum:

Subject:      Re: Blobs via SQL
                  From:         koterski@SPICEDHAM2borland.com (Steve Koterski)
                  Date:         1998/03/20
                  Message-ID:   <3514c411.13371795@forums.borland.com>
                  Newsgroups:   borland.public.delphi.database.sqlservers
                  [More Headers]


                  On Fri, 20 Mar 1998 14:56:51 +1300, Alistair Clethero <tarac@voyager.co.nz>
                  wrote:

                  >I am using a tquery to duplicate a record in a table 'n' times (it
                  >assigns a unique key via a parameter on each insert). The duplication
                  >works ok except when i try to duplicate one of the fields which is a
                  >text blob - the sql just refuses to like it. Can anyone tell me how i
                  >can insert a blob field using a tquery component, or at least point me
                  >to some SQL info on blobs. Most of the books show how you can use Delphi
                  >components with blobs, but not straight sql.

                  To insert BLOB or memo data through SQL, the BLOB or memo data must be
                  passed as a parameter. On the Delphi side, the parameter must be of type
                  ftBlob or ftMemo, whichever is appropriate for the column type. The data to
                  be inserted must be in the form of a PChar buffer (or equivalent). Prior to
                  executing the query with the UPDATE or INSERT statement, fill the parameter
                  by assigning the PChar buffer to the parameter.

                    procedure TForm1.Button1Click(Sender: TObject);
                    var
                      P: PChar;
                      s: Integer;
                    begin
                      with Query1 do begin
                        ParamByName('StrParm').AsString := 'ABC';
                        s := Memo1.GetTextLen + 1;
                        P := AllocMem(s);
                        try
                          FillChar(P^, s, #0);
                          Memo1.GetTextBuf(P, s);
                          ParamByName('MemoParm').AsMemo := P;
                        finally
                          FreeMem(P, s);
                        end;
                        ExecSQL;
                      end;
                    end;

                  **************************************************************************
                  Steve Koterski
                  Borland International, Inc.
                  http://www.borland.com/delphi
                  (Remove the "SPICEDHAM2" from the address. Death to spam-bots!)


This is from me (Ronit):
The SQL statement should look like this:

SQL.Text:='insert into MyTable values("aaa","bbb"',:P)';
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