正文
oracle 选取出现次数最多的前5条数据
小程序:扫一扫查出行
【扫一扫了解最新限行尾号】
复制小程序
【扫一扫了解最新限行尾号】
复制小程序
SELECT
*
FROM
(
SELECT
PROJECT_LISTING.MATERIAL,
COUNT (*) AS "出现次数"
FROM
PROJECT_LISTING
WHERE
PROJECT_LISTING.MATERIAL IS NOT NULL
GROUP BY
PROJECT_LISTING.MATERIAL
ORDER BY
COUNT (*) DESC
) WHERE ROWNUM <= 5
ORDER BY
COUNT (*) DESC 是关键排序
COUNT (*) AS "出现次数" 这个可以不写,只是为了看的明白