@Test
public void testGetColumn_Unknown() {

    DbColumnMetadata c1 = new DbColumnMetadata("c1", Types.INTEGER, false, false);
    DbTableMetadata md = new DbTableMetadata(TableFQName.forName("x"), new DbColumnMetadata[]{c1});
    assertThrows(IllegalArgumentException.class, () -> md.getColumn("no_such_column"));
}