Patent attributes
The subject technology receives a query plan corresponding to a query. The subject technology executes the query based at least in part on the query plan, the executing including: filtering a first set of files that are to be modified by a merge statement, performing a split operation to send information related to a second set of files to a scan set builder operation in a first portion of the query plan and scan back operation in a second portion of the query plan, performing the scan set builder operation to remove the second set of files from the first set of files, performing a table scan operation based on a third set of files, and performing a first union all operation to combine the first set of data with a second set of data as a first set of combined data.
