PostgreSQL 查询某个属性相同内容出现的次数

查询某个数据库表属性 name 相同内容出现出现的次数，并按次数从大到小排序

SELECT name, COUNT(*) AS count
FROM your_table
GROUP BY name
ORDER BY count DESC;

示例

select project_id, COUNT(*) AS count
from app_ads_positions
group by project_id
order by count DESC;

运行结果：