private string PrepareWhereSql()
{
SqlText.Append(" where ");
Separator = null;
foreach (var i in SqlColumns)
{
if (!i.IsInPrimaryKey)
{
continue;
}
AddSeparator(" AND ");
SqlText.Append(Encode(i.ColumnName) + "=@p" + ParameterValues.Count);
ParameterValues.Add(i.ValueReader.ReadPropertyValue(Entity));
}
var whereSql = SqlText.ToString();
SqlText.Clear();
return(whereSql);
}