百度移动下拉词排名

• count distinct优化

• count(*)优化

• select count(*) 优化

• count group by 优化

• order by count(*)优化

• count distinct partition by

• countdistinct函数

• hive中count(distinct)优化

• count(distinct) group by

• count(distinct)优化

搜狗移动下拉词排名

神马移动下拉词排名