TOP 1 대체 SQL
데이터베이스/SQL 2018. 11. 11. 23:06
TOP 1 대체 SQL
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 | /* TEST DATA */ WITH TEST AS ( SELECT '201801' AS YM, '1' AS SEQ UNION ALL SELECT '201802' AS YM, '2' AS SEQ UNION ALL SELECT '201803' AS YM, '3' AS SEQ UNION ALL SELECT '201804' AS YM, '4' AS SEQ UNION ALL SELECT '201802' AS YM, '1' AS SEQ UNION ALL SELECT '201803' AS YM, '2' AS SEQ UNION ALL SELECT '201804' AS YM, '3' AS SEQ UNION ALL SELECT '201805' AS YM, '4' AS SEQ UNION ALL SELECT '201801' AS YM, '1' AS SEQ UNION ALL SELECT '201802' AS YM, '2' AS SEQ UNION ALL SELECT '201803' AS YM, '3' AS SEQ UNION ALL SELECT '201804' AS YM, '4' AS SEQ UNION ALL SELECT '201805' AS YM, '1' AS SEQ UNION ALL SELECT '201806' AS YM, '2' AS SEQ ) /* SQL */ SELECT MAX(YM) KEEP (DENSE_RANK FIRST ORDER BY YM DESC) AS MAX_YM , MAX(SEQ) KEEP (DENSE_RANK FIRST ORDER BY SEQ DESC) AS MAX_SEQ FROM TEST; | cs |
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