I have a procedure like the following in SQL:
select Code, Name,U_LineID, U_empID, U_Status,CASEWHENFromDate < @StartDate THEN @StartDate ELSE FromDate ENDASFromDate,
CASEWHEN ToDate ISNULLTHEN @EndDate
WHEN ToDate > @EndDate THEN @EndDate
ELSE ToDate ENDAS ToDate, U_Position, U_Project,U_Sponsorship
from
(
select Code, Name,U_LineID, U_empID, U_Status, U_Date ASFromDate,
DATEADD(DAY,-1,(selecttop 1 history.U_Date AS ToDatefrom [@EMP_HISTORY] history
where history.U_Date > [@EMP_HISTORY].U_Date
and history.U_empID = [@EMP_HISTORY].U_empIDorderby history.U_Date))AS ToDate,
U_Position, U_Project, U_Sponsorship
from [@EMP_HISTORY]
where U_empID = @EmpID
) InnerQuery
WHERE (FromDate between @StartDate and @EndDate OR ToDatebetween @StartDate and @EndDate)
ORDERBY FromDate
When I try to convert it to normal view or calculation view in HANA, I face the issue that TOP keyword in the following nested query is not supported in HANA: (feature not supported to have TOP in the nested query) - I used LIMIT also but it does not solve the issue
,(selecttop 1 history.U_Date AS ToDate from [@EMP_HISTORY] history
where history.U_Date > [@EMP_HISTORY].U_Date
and history.U_empID = [@EMP_HISTORY].U_empIDorderby history.U_Date)
So I take the nested query and convert it to calculation view with two parameters:U_Date and EmpID like the following:
First Calculation View: (ABS_CA_EMPLOYMENT_HISTORY)
/********* Begin Procedure Script ************/
BEGIN
var_out = SELECT ADD_DAYS((select TOP 1 history."U_Date"AS"ToDate"
from"@EMP_HISTORY" history
where history."U_Date"> :U_Date
and history."U_empID" = :EmpID orderbyhistory."U_Date"),-1) AS"ToDate"FROM DUMMY
;
END/********* End Procedure Script ************/
Then I create another calculation view that make use of the above calculation view like the following:
Second Calculation View: (ABS_CA_EMPLOYMENT_HISTORY_DETAILS)
/********* Begin Procedure Script ************/
BEGIN
var_out = SELECT"Code", "Name","U_LineID","U_empID", "U_Status", "U_Date",
(SELECT"ToDate"FROM"_SYS_BIC"."Payroll/ABS_CA_EMPLOYMENT_HISTORY"
(PLACEHOLDER."$$empid$$" => :EmpID,
PLACEHOLDER."$$u_date$$" => "U_Date")) AS"ToDate",
"U_Position", "U_Project", "U_Sponsorship", "U_Remarks"
FROM"@EMP_HISTORY";
END/********* End Procedure Script ************/
I face another issue: feature not supported to have alias or table field ("U_Date") as input parameter to the calculation view.
is there a solution for that or workaround?
Your urgent reply is highly appreciated.
Thanks
