SAP HANA SQL Query with Dynamic Placeholder

问题

I have a query that is passing the current year as a placeholder parameter that right now is hard coded. How can I have this just pass the current year? I've seen a few different potential solutions but most of them are in HANA Studio or involve dynamic SQL generation.

I'm putting the SQL into Tableau so those are both off the table.

...sum("StockInQualityInspection") as in_quality,
         sum("StockInTransit") as its
  from "_SYS_BIC"."stream.models.marketing.poly/InventoryQuery" ('PLACEHOLDER' = ('$$IPCurrentYear$$', '2018'))
  where "StockValuatedUnrestrictedUse" <> 0 or "StockInQualityInspection" <> 0 or "StockInTransit" <> 0
  group by case when "ReceivingPlant" is null then "Plant" else "ReceivingPlant" end, 
           case.... 

回答1:

• Remove the parameters input of your CV
• Add this expression: year(now())

If you don't have access to manipulate the CV, into your query use:

• ('PLACEHOLDER' = ('$$IPCurrentYear$$', select year(now()) from DUMMY))

Regards

来源：https://stackoverflow.com/questions/49615710/sap-hana-sql-query-with-dynamic-placeholder