"Declare"

Hello Experts,

i am new to SAP HANA, i am quite familiar in SQL microsoft sql studio and this query works there perfectly.

We are in the process of transition to HANA and i am having difficulty updating/changing this Query to work in HANA.

Can anyone offer any suggestions?

declare @WMSDB varchar(30)
select @WMSDB = 'AISWM'+DB_NAME()
declare @xAISWMEventLog varchar(250)
select  @xAISWMEventLog = 'CREATE SYNONYM xAISWMEventLog FOR '+ @WMSDB+'.dbo.xAISWMEventLog'
exec(@xAISWMEventLog)

select [DateTime],
CASE when YEAR(datetime) = YEAR(GETDATE()) then 1 else 0 end as YTD,
CASE when YEAR(datetime) = YEAR(GETDATE()) and Month(datetime) = month(GETDATE()) then 1 else 0 end as MTD,
CASE when YEAR(datetime) = YEAR(GETDATE()) and Month(datetime) = month(GETDATE()) and day(datetime) = day(GETDATE()) then 1 else 0 end as TODAY,
UserID,SOID,DocEntry, InvtID, WhseLoc,LineRef,SiteID, SlpCode, a.Quantity, LineTotal
FROM xAISWMEventLog a
left outer join RDR1 on rdr1.DocEntry = a.soid and rdr1.LineNum = a.LineRef
  where
     a.EventTyp = 'SHIP' and a.LnAction = 'Finish'

drop SYNONYM xAISWMEventLog