[AlexSku]

Примерно так:

Код:

with Query1 do
begin
  Close;
  Params.ParamValues[Par4]:= Edit1.Text;
  Params.ParamValues[Par5]:= Edit2.Text;
  Open;
end;

Текст запроса

Код:

SELECT Col3 
FROM DBase_А
WHERE (Col4 = :Par4) AND (Col5 = :Par5)
ORDER BY Col3