In PostgreSQL, Liquibase maps the `blob` type to an `oid` column by
default[1]. That column type is not supported[2] very well when using
the `valueBlobFile` attribute, which expects a `bytea` column instead.
This was confirmed on all PostgreSQL versions starting from 9.6.
The `validCheckSum` attribute does not need to be updated since it was
already for the previous (binary_type, varchar_type) combination in
an unrelated commit (78a99d5860).
Fixes#1213.
[1] https://liquibase.jira.com/browse/CORE-1863
[2] https://github.com/liquibase/liquibase/pull/605
If someone was using MariaDB before #1188, they were probably doing so
by using the MySQL JDBC driver to pass the migration (which had the
proper workarounds in place for some column types).
This commit assumes that the migrations done that way were valid and
produced the same result as running the MariaDB migrations after #1188.
François-Xavier Thomas
Andrew DeMaria