UFN_REGISTRANTREGISTRATION_GETAMOUNTINCURRENCY

            CREATE function dbo.UFN_REGISTRANTREGISTRATION_GETAMOUNTINCURRENCY
            (
                @REGISTRANTREGISTRATIONID uniqueidentifier,
                @CURRENCYID uniqueidentifier
            )
            returns money
            as
            begin
                declare @AMOUNT money = 0;

                if (@CURRENCYID is null) or (@CURRENCYID = dbo.UFN_CURRENCY_GETORGANIZATIONCURRENCY())
                begin
                    select
                        @AMOUNT = REGISTRANTREGISTRATION.ORGANIZATIONAMOUNT
                    from
                        dbo.REGISTRANTREGISTRATION
                    where
                        REGISTRANTREGISTRATION.ID = @REGISTRANTREGISTRATIONID;
                end
                else
                begin
                    declare @RECORDBASECURRENCYID uniqueidentifier;
                    declare @RECORDDATE datetime;

                    select
                        @RECORDBASECURRENCYID = EVENT.BASECURRENCYID,
                        @RECORDDATE = REGISTRANTREGISTRATION.DATEADDED
                    from
                        dbo.REGISTRANTREGISTRATION
                    inner join 
                        dbo.REGISTRANT on REGISTRANTREGISTRATION.REGISTRANTID = REGISTRANT.ID
                    inner join 
                        dbo.EVENT on REGISTRANT.EVENTID = EVENT.ID
                    where
                        REGISTRANTREGISTRATION.ID = @REGISTRANTREGISTRATIONID;

                    if @CURRENCYID = @RECORDBASECURRENCYID
                    begin
                        select
                            @AMOUNT = REGISTRANTREGISTRATION.AMOUNT
                        from
                            dbo.REGISTRANTREGISTRATION
                        where
                            REGISTRANTREGISTRATION.ID = @REGISTRANTREGISTRATIONID;
                    end
                    else
                    begin
                        declare @CURRENCYEXCHANGERATEID uniqueidentifier;

                        set @CURRENCYEXCHANGERATEID = dbo.UFN_CURRENCYEXCHANGERATE_GETLATESTINCLUDEEXPIRED(dbo.UFN_CURRENCY_GETORGANIZATIONCURRENCY(), @CURRENCYID, @RECORDDATE, 1, null);
                        if (@CURRENCYEXCHANGERATEID is not null)
                        begin
                            select
                                @AMOUNT = dbo.UFN_CURRENCY_CONVERT(REGISTRANTREGISTRATION.ORGANIZATIONAMOUNT, @CURRENCYEXCHANGERATEID)
                            from
                                dbo.REGISTRANTREGISTRATION
                            where
                                REGISTRANTREGISTRATION.ID = @REGISTRANTREGISTRATIONID;
                        end
                        else
                        begin
                            set @CURRENCYEXCHANGERATEID = dbo.UFN_CURRENCYEXCHANGERATE_GETLATESTINCLUDEEXPIRED(@CURRENCYID, dbo.UFN_CURRENCY_GETORGANIZATIONCURRENCY(), @RECORDDATE, 1, null);

                            select
                                @AMOUNT = dbo.UFN_CURRENCY_CONVERTINVERSE(REGISTRANTREGISTRATION.ORGANIZATIONAMOUNT, @CURRENCYEXCHANGERATEID)
                            from
                                dbo.REGISTRANTREGISTRATION
                            where
                                REGISTRANTREGISTRATION.ID = @REGISTRANTREGISTRATIONID;
                        end
                    end
                end    

                return @AMOUNT;
            end