@Override
    public MapperResult listGroupKeyMd5ByPageFetchRows(MapperContext context) {
        
        return new MapperResult(" SELECT t.id,data_id,group_id,tenant_id,app_name,type,md5,gmt_modified "
                + "FROM ( SELECT id FROM config_info ORDER BY id OFFSET " + context.getStartRow() + " ROWS FETCH NEXT "
                + context.getPageSize() + " ROWS ONLY ) g, config_info t WHERE g.id = t.id", Collections.emptyList());
    }
@Test
    void testListGroupKeyMd5ByPageFetchRows() {
        MapperResult mapperResult = configInfoMapperByDerby.listGroupKeyMd5ByPageFetchRows(context);
        assertEquals(mapperResult.getSql(),
                " SELECT t.id,data_id,group_id,tenant_id,app_name,type,md5,gmt_modified FROM ( SELECT id FROM config_info "
                        + "ORDER BY id OFFSET " + startRow + " ROWS FETCH NEXT " + pageSize
                        + " ROWS ONLY ) g, config_info t WHERE g.id = t.id");
        assertArrayEquals(mapperResult.getParamList().toArray(), emptyObjs);
        
    }