Delphi ADO sql statement for inserting a CLOB into Oracle 8/9

Posted on 2004-10-22
Last Modified: 2012-06-22
I have an application that needs to insert a record into a table which includes a CLOB field.  I've seen comments about dbms_log and about empty_clob(), but would really appreciate someone who's done this to put together a couple of sql statements that I can execute to get the job done.

I have a TMemo control on screen (not data bound) and I need to pass the text over and get it inserted into the table.  What I've tried so far is

ADOCmd.SQL := 'Insert into Memos (Recno, Notes) values (1234, ' + moDescrip.Text + ')';

For someone who's done this before, this should be quick and easy points.  :-)
Question by:bjones8888

    Author Comment

    Oops.  Forgot to mention.  It seems to work ok with small amounts of text (< 254 characters).  As soon as I go to larger amounts of text, I get an access violation.  It's wrapped pretty deeply so I'm not sure what the actual error message is that it generates.
    LVL 14

    Accepted Solution

    Would it help if you use parameters instead?

    with ADOCmd do
      CommandText := 'INSERT INTO Memos (RecNo, Notes) VALUES (:RecNo, :Notes)';
      Parameters.ParamValues['RecNo'] := 1234;
      Parameters.ParamValues['Notes'] := moDescript.Text;
    LVL 1

    Expert Comment

    When dealing with large data I have had success using a parameterized query and streams.

    ADOCmd.SQL := 'Insert into Memos (Recno, Notes) values (1234, :pNotes)';

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