Fix previous version detection in the presence of inferred DDL migrations #197
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Update the definition of the
previous_version
function to use a recursive CTE to find the first non-'inferred' parent of the current version.This requires adding a new column to the
pgroll.migrations
table to record whether a migration is a pgroll migration or an inferred DDL change made outside of pgroll.Together, this means that the previous version schema is removed correctly when there have been inferred DDL changes between the current and previous pgroll migration.
Fixes #196