/// <summary>Определение поля</summary>
public static Expr Field(string fieldName, From from)
{
Expr oper = new Expr();
oper.Expression = OmExpression.Field(fieldName, from != null ? from.Term : null);
return(oper);
}
/// <summary>Определение поля</summary>
public static Expr Field(string fieldName)
{
Expr oper = new Expr();
oper.Expression = OmExpression.Field(fieldName);
return(oper);
}