geopackage-sdk/src/main/java/mil/nga/geopackage/extension/related/UserMappingDao.java
public List<Long> uniqueRelatedIds() {
        return querySingleColumnTypedResults(
                "SELECT DISTINCT " + CoreSQLUtils.quoteWrap(UserMappingTable.COLUMN_RELATED_ID) + " FROM "
                        + CoreSQLUtils.quoteWrap(getTableName()), null);
    }
public List<Long> uniqueRelatedIds() {
        return querySingleColumnTypedResults(
                "SELECT DISTINCT " + CoreSQLUtils.quoteWrap(UserMappingTable.COLUMN_RELATED_ID) + " FROM "
                        + CoreSQLUtils.quoteWrap(getTableName()), null);
    }
Get the unique related ids

@return list of unique related ids
@since 3.2.0