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var
Str: string;
temStream: TMemoryStream;
begin
temStream := TMemoryStream.Create;
RichEdit1.Lines.SaveToStream(temStream);
str := 'select * from Table1';
AdoQuery1.Close;
AdoQuery1.SQL.Clear;
AdoQuery1.SQL.Add(str);
AdoQuery1.Open;
AdoQuery1.Append;
AdoQuery1.FieldByName('ID').AsInteger:= 3;
TBlobField(AdoQuery1.FieldByName('RichEditText')).LoadFromStream(temStream);
AdoQuery1.Post;
temStream.Free;
var
Str: string;
temStream: TMemoryStream;
begin
temStream := TMemoryStream.Create;
str := 'select * from Table1 ';
AdoQuery1.Close;
AdoQuery1.SQL.Clear;
AdoQuery1.SQL.Add(str);
AdoQuery1.Open;
TBlobField(AdoQuery1.FieldByName('RichEditText')).SaveToStream(temStream);
temStream.Seek(0,0);
RichEdit1.Lines.LoadFromStream(temStream);
temStream.Free;