Currently, @cockroachdb/sql-observability are working towards adding the ability to compare historical query plans for a given statement.

We want to be able to quickly tell if the plan for a given statement has changed in a specified interval. Ideally, we should be able to do this without comparing the entire plan structure.

Since we already anonymized statements by removing constants in the statement, two plans with the same structure but different scan contraint values should produce the same hash.

Epic: CRDB-8631