SQL

oracle list dates between

-- Oracle: List of last dates
SELECT trunc(sysdate - ROWNUM) AS CAL_DATE
FROM DUAL
CONNECT BY ROWNUM < 30;

oracle list days between two dates

-- All dates between 01/01/2021 and 15/01/2021
SELECT to_date('01/01/2021', 'DD/MM/YYYY') + ROWNUM - 1
FROM ALL_OBJECTS
WHERE ROWNUM <= to_date('15/01/2021', 'DD/MM/YYYY') 
	- to_date('01/01/2021', 'DD/MM/YYYY') + 1;

oracle difference between two dates in days

  v_numvar := dt1-dt2;