分组排序SQL

SELECT * FROM (SELECT columns,ROWNUM AS RN FROM (SELECT DISTINCT columns FROM table WHERE 1=1)) T WHERE RN = ‘1‘

SELECT * from (SELECT columns,(ROW_NUMBER() OVER (ORDER BY column DESC)) RN
FROM (SELECT DISTINCT columns FROM table) t1) t2
WHERE t2.RN>1 AND t2.RN<5

分组排序SQL

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