我正在汇总数据而我无法对某些列求和,所以我想从该列中最频繁地观察或中值。示例如下,先谢谢。
ID网站
1 3
1 3
1 2
1 3
2 4
2 5
2 5
2 5
我希望它看起来像
ID网站
1 3
2 5
答案 0 :(得分:0)
WITH temp AS(
SELECT ID, Site, COUNT(*) As counts
FROM id_table
GROUP BY ID, Site
)
SELECT temp.ID, temp.Site
FROM temp
JOIN (SELECT ID, MAX(counts) max_counts
FROM temp
GROUP BY ID
)b
ON temp.ID = b.ID
AND temp.counts = b.max_counts
ORDER BY ID ASC