The migration resulted in a query being run which was broken. The query
was broken because it was dynamically generated by Java code. This Java
code resulted in a valid migration when until very recently when the
query was refactored to deal with a new DB structure. Now the query is
no longer suitable to be run against a DB_VERSION 49 database.
To resolve this, the migration now hard codes the query to a string
which is executable when the DB_VERSION is 49.
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