public override string ToString()
{
StringBuilder sb = new StringBuilder();
if (_leftTable == null)
{
sb.Append("(NONE)");
}
else
{
sb.Append(_leftTable.Name);
sb.Append(": ");
sb.Append(_leftTable.TableBinding.Name);
}
sb.Append(" ----> ");
sb.Append(_rightTable.Name);
sb.Append(": ");
sb.Append(_rightTable.TableBinding.Name);
sb.Append(Environment.NewLine);
sb.Append("{");
sb.Append(_leftExpression.ToString());
sb.Append("}");
sb.Append(" ");
sb.Append(_op.ToString());
sb.Append(" ");
sb.Append("{");
sb.Append(_rightExpression.ToString());
sb.Append("}");
sb.Append(Environment.NewLine);
return(sb.ToString());
}