private string ResolveOrder()
{
var buffer = new StringBuilder();
foreach (var item in _orderExpressions)
{
if (item == _orderExpressions.First())
{
buffer.Append($" ORDER BY ");
}
var result = new OrderExpressionResovle(item.Expression, item.Asc).Resovle();
buffer.Append(result);
buffer.Append(",");
}
return(buffer.ToString().Trim(','));
}
protected string BuildOrderExpression()
{
var buffer = new StringBuilder();
var expressions = _expressions.GetOrderExpressions();
var first = true;
foreach (var item in expressions)
{
if (first)
{
first = false;
buffer.Append($" ORDER BY ");
}
var result = new OrderExpressionResovle(_isSingleTable, item.Expression, item.Asc).Resovle();
buffer.Append(result);
buffer.Append(',');
}
return(buffer.ToString().Trim(','));
}