group by time oracle sql
/* DANIEL MOMBEYNI */ SELECT M.YYYYMMDD, M.HH24, M.HALF_PART, FROM (SELECT TO_CHAR(T.TIME_FIELD, 'yyyy/mm/dd') AS "YYYYMMDD", TO_CHAR(T.TIMESTAMP, 'HH24') AS "HH24", CASE WHEN TO_CHAR(T.TIME_FIELD, 'MI') BETWEEN 0 AND 30 THEN '0-30 min' WHEN TO_CHAR(T.TIME_FIELD, 'MI') BETWEEN 31 AND 59 THEN '31-59 min' END AS "HALF_PART" FROM TBL_NAME T) M GROUP BY M.YYYYMMDD, M.HH24, M.HALF_PART ORDER BY 1
