We are counting on this feature for running post query transformations - https://redash.io/help/queries/using-datasets-as-data-sources.html
We are planning to use URL datasource and lots of features - links,filters etc depend on the column names (like __filter suffix) which we want to modify on redash layer itself (not on the server).
Is this feature planned to be released in the open source version of redash anytime soon ?