QUESTION about HANA SQL

Hi Everyone,,i'm a new to SAP HANA.

I have a few question about HANA SQL.

1. Can I use 'goto' structure?

I usually use like this in MS SQL.

----------------sample-----------------------------------------

IF @Parameter = '1'

     BEGIN

          GOTO SP_END

     END

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

SP_END:

select * from [tablename] where 'condition'

--------------------------------------------------------------------

can i change this structure for HANA?

2. Can I use function in procedure ?

sorry but , MS SQL sample

--------------MS sample----------------------------------------

INSERT #TEMP TABLE  (A, B, C)

SELECT   E, F, G

FROM [DBO].[FN_GET_FQTY](@SDATE)

----------------------------------------------------------------------

i try to like this but it doesn't work

--------------sample---------------------------------------------

INSERT INTO #TEMP TABLE  (A, B, C)

SELECT   "E", "F", "G"

FROM     CALL   FN_GET_FQTY   (:SDATE)

----------------------------------------------------------------------

if you know how to slove this problem please let me know, it is very important thing for me.

3.UPDATE TEMPORARY TABLE

if i try this structure in some procedure it doesn't work .        

--------------sample---------------------------------------------------------------------------------------------------

create local temporary table #"temp" (ItemCode NAVARCHAR(20));

update #"temp" set ItemCode='23';

SAP DBTech JDBC: [7] (at 4652): feature not supported: update statement for volatile table

--------------------------------------------------------------------------------------------------------------------------

if i try in hana session  it is ok ,  but not to work in procedure

Best regards and thanks to all of you that have helpfull answears, Thanks.