private void DoAppendParameter(int parameterIndex, int textIndex, int textLength)
{
m_writer.Write(Preparer.m_commandText, m_lastIndex, textIndex - m_lastIndex);
var parameter = Preparer.GetInputParameter(parameterIndex);
parameter.AppendSqlString(m_writer, Preparer.Options);
m_lastIndex = textIndex + textLength;
}