select family,count(*)as familyNum from bold group by family order by familyNum desc 结果: Emberizidae 739 Anatidae 735 Tyrannidae 635 Parulidae 507 Scolopacidae 399 Muscicapidae 349 Fringillidae 346 Turdidae 317 Picidae 299 Sylviidae 289 Corvidae 248 Furnariidae 227 Paridae 203 Accipitridae 196 Strigidae 194 Icteridae 190 Columbidae 178 Sturnidae 164 Spheniscidae 162 ...