For NVARCHAR2 and VARCHAR2 maximum size is 4000 bytes, or 32767 bytes if the MAX_STRING_SIZE initialization parameter is set to EXTENDED. This is useful you have to allocate more data to a variable.
PL SQL Query to list the months between two dates
SELECT TO_CHAR(ADD_MONTHS(TRUNC(TO_DATE('01-JAN-22','DD-MON-YY'), 'MM'), LEVEL -1),'MON-YY')
MONTH_YEAR
FROM DUAL
CONNECT BY LEVEL <= MONTHS_BETWEEN(TO_DATE('01-DEC-22','DD-MON-YY'),
TO_DATE('01-JAN -22','DD-MON-YY')) + 1
ORDER BY LEVEL;
Result set
MONTH_YEAR
JAN-22
FEB-22
MAR-22
APR-22
MAY-22
JUN-22
JUL-22
AUG-22
SEP-22
OCT-22
NOV-22
DEC-22
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