topic Re: max(Date) Group By Load Script Error in QlikView

max(Date) Group By Load Script Error

ljackson — Sat, 16 Nov 2024 20:31:50 GMT

I need to load, by customer, the last date a product was ordered. The below script works fine, but obviously the max(Date) and Group By options are commented out.

LatestOrders:
NOCONCATENATE LOAD
CustCode,
//Max(Date) as MaxDate,
Date,
Order,
OrderStatusH,
OrderInvStatusD,
ProductCode,
OrderSentqtyD,
ActCostD,
ActWsvD,
ActRsvD,
TaholaDateOrder
RESIDENT TempLatestOrderDetails;

//GROUP BY CustCode, ProductCode;

STORE LatestOrders INTO \\bi\Data\QVD\LatestOrders.qvd (QVD);

DROP Table TempLatestOrderDetails;

If I change the script to include the max(Date) and Group By I get an INVALID EXPRESSION error:

LatestOrders:
NOCONCATENATE LOAD
CustCode,
Max(Date) as MaxDate,
//Date,
Order,
OrderStatusH,
OrderInvStatusD,
ProductCode,
OrderSentqtyD,
ActCostD,
ActWsvD,
ActRsvD,
TaholaDateOrder
RESIDENT TempLatestOrderDetails

GROUP BY CustCode, ProductCode;

STORE LatestOrders INTO \\bi\Data\QVD\LatestOrders.qvd (QVD);

DROP Table TempLatestOrderDetails;

I'm missing something obvious ....but can't work it out. What am I doing wrong?

Many thanks for your help 😁

Re: max(Date) Group By Load Script Error

lironbaram — Wed, 03 Jul 2019 09:44:03 GMT

when using group by the fields you load

need to be either in the group by part or

loaded inside an aggr functions for example maxstring , only

Re: max(Date) Group By Load Script Error

tresB — Wed, 03 Jul 2019 09:47:08 GMT

All the fields you load along with Max(Date) statement (in the same load statement) need to be there in Group By clause.

Load

F1,

Max(Date) as Max,

F2, F3, .... Fn

from <> Group By F1, F2, F3, ....Fn; // You might want to change the field order here.

Re: max(Date) Group By Load Script Error

ljackson — Wed, 03 Jul 2019 10:08:15 GMT

Ahhhh ...that makes sense now. Many thanks

I've simplified the script, and now it works perfectly:

LatestOrders:
LOAD
CustCode,
Max(Date) as MaxDate,
ProductCode
RESIDENT TempLatestOrderDetails

GROUP BY ProductCode, CustCode;

Thanks again 👍