Read only certain columns (read permissions) of a PostGIS database in QGIS

Question

In our administration, each employee is given various rights to read and edit data on the PostgreSQL/PostGIS database. To view the geodata, we use QGIS. In this case there should be read permissions on only 3 columns. The rest should not be seen by the user. In PgAdmin I have distributed the permissions as follows:

GRANT SELECT(name) ON test.krankenhaus_test TO r_test;
GRANT SELECT(geom) ON test.krankenhaus_test TO r_test;
GRANT SELECT(krankenhaus_id) ON test.krankenhaus_test TO r_test;

Unfortunately I cannot see this table in QGIS. We use PostgreSQL 13.7 and QGIS 3.22.10. When I assign a grant select to the full table, I get the complete table displayed in QGIS.

GRANT SELECT ON TABLE test.krankenhaus_test TO r_test;

However, as I said, I only want to be able to see the three columns.