How to compute flex table keys on subset of very large table

Hi, sorry for the delay - does the flex table define partitions? If so, a possible solution is to swap a partition to a temporary table with identical DDL (CREATE TABLE LIKE) and perform the compute keys / build view there, then extract data from the temp table. However, it seems like this would leave you with views for each temp table that you'll need to consolidate into a persistent table to cover all partitions. You might open a support case for this to see if engineering can find a better way to update flex tables by partition or range.