/usr/share/doc/ is in postgresql-comparator 2.2.6-3.
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/usr/share/doc/postgresql-comparator/
/usr/share/doc/postgresql-comparator/README.Debian
/usr/share/doc/postgresql-comparator/README.pgc_casts
/usr/share/doc/postgresql-comparator/README.pgc_checksum
/usr/share/doc/postgresql-comparator/README.xor_aggregate
/usr/share/doc/postgresql-comparator/changelog.Debian.gz
/usr/share/doc/postgresql-comparator/copyright
/usr/share/doc/postgresql-doc-9.6/
/usr/share/doc/postgresql-doc-9.6/contrib/
/usr/share/doc/postgresql-doc-9.6/contrib/README.pg_comparator
/usr/share/doc/postgresql-doc-9.6/contrib/README.pgc_casts
/usr/share/doc/postgresql-doc-9.6/contrib/README.pgc_checksum
/usr/share/doc/postgresql-doc-9.6/contrib/README.xor_aggregate