![]() ![]() SELECT TO_CHAR( TRUNC(SYSDATE, 'MM'), 'DD-MON-YYYY HH:MI:SS') SELECT TO_CHAR(SYSDATE, 'DD-MON-YYYY HH:MI:SS') TRUNC(left IN DATE, right IN VARCHAR2) RETURN DATE Special thanks to Dave Hayes for reminding me of this. Selectively remove part of the date information SELECT TO_CHAR(datecol, 'DD-MON-YYYY HH:MI:SS') INSERT INTO t (datecol) VALUES ( TRUNC(SYSDATE, ' MI')) INSERT INTO t (datecol) VALUES ( TRUNC(SYSDATE, ' HH')) INSERT INTO t (datecol) VALUES ( TRUNC(SYSDATE)) INSERT INTO t (datecol) VALUES (SYSDATE) SELECT TO_CHAR(SYSDATE, 'MONTH DAY RR HH:MI:SS') FROM dual SELECT TO_CHAR(CURRENT_DATE, 'DD-MON-YYYY HH:MI:SS') FROM dual SELECT ROUND(TO_DATE('2'),'YEAR') NEW_YEAR If you omit the format, the date is rounded to the nearest day Returns date rounded to the unit specified by the format model. If no format, the date is rounded to the nearest day Returns date rounded to the unit specified by the format. Resolves at datatime expression to a TIMESTAMP WITH TIME ZONE value or a VARRAY with TIMESTAMP WITH TIME ZONE values Takes a datetime expression and returns 1 if the datetime value is affected by or will result in a "nonexisting time" or "duplicate time" error with the new time zone data: Otherwise 0Īllows specification of error handling for a specified datetime expression SELECT NEXT_DAY(SYSDATE, 'FRI') FROM dual options are SUN, MON, TUE, WED, THU, FRI, and SAT NEXT_DAY(left IN DATE, right IN VARCHAR2) RETURN DATE 'MM-DD-YYYY HH24:MI:SS'), 'AST', 'PST') "New Date and Time"ĪLTER SESSION SET NLS_DATE_FORMAT = 'DD-MON-YYYY HH24:MI:SS' ĭate of next specified date following a date NEW_TIME(right IN DATE, middle IN VARCHAR2, left IN VARCHAR2) RETURN DATE Returns the date and time in time zone zone2 when date and time in time zone zone1 are date.īefore using this function, you must set the NLS_DATE_FORMAT parameter to display 24-hour time. SELECT MONTHS_BETWEEN(SYSDATE-365, SYSDATE+365) FROM dual SELECT MONTHS_BETWEEN(SYSDATE+365, SYSDATE-365) FROM dual MONTHS_BETWEEN(left IN DATE, right IN DATE) RETURN NUMBER SELECT LENGTH4(last_ddl_time) FROM user_objects SELECT LENGTH2(last_ddl_time) FROM user_objects SELECT LENGTHC(last_ddl_time) FROM user_objects SELECT LENGTHB(last_ddl_time) FROM user_objects SELECT LENGTH(last_ddl_time) FROM user_objects SELECT LEAST(datecol1, datecol2, datecol3) FROM t SELECT TO_CHAR(SYSDATE - INTERVAL '10' MINUTE, 'HH:MI:SS') SELECT TO_CHAR(SYSDATE + INTERVAL '10' MINUTE, 'HH:MI:SS') SELECT GREATEST(datecol1, datecol2, datecol3) INSERT INTO t VALUES (SYSDATE-7, SYSDATE-18, SYSDATE-9) INSERT INTO t VALUES (SYSDATE-15, SYSDATE, SYSDATE+15) INSERT INTO t VALUES (SYSDATE+23, SYSDATE-10, SYSDATE-24) SELECT EXTRACT(YEAR FROM DATE '') FROM dual Ĭonn EXTRACT( hour FROM order_date) "Hour" SELECT DUMP(SYSDATE, 16) DROWS FROM dual Įxtracts and returns the value of a specified datetime field from a datetime or interval value expression Single characters with the character set name Hexadecimal notation with the character set name Octal notation with the character set nameĭecimal notation with the character set name ![]() Sp IN PLS_INTEGER := NULL, - starting position Returns a VARCHAR2 value containing the datatype code, length in bytes, and internal representation of a valueĭf IN PLS_INTEGER := NULL, - return format SET NLS_DATE_FORMAT = 'DD-MON-YYYY HH24:MI:SS' ĪLTER SESSION SET NLS_DATE_FORMAT = 'DD-MON-YYYY' Returns the current date in the session time zone, in a value in the Gregorian calendar of datatype DATE ORA-00932: inconsistent datatypes: expected NUMBER got DATE SELECT default_tablespace, APPROX_MEDIAN(created DETERMINISTIC) MOD SQL> SELECT default_tablespace, APPROX_MEDIAN(created DETERMINISTIC) ORAFAIL This is documented to help those that wonder what's wrong after reading the docs.ĪPPROX_MEDIAN( ) RETURN DATE It takes a numeric or datetime value and returns an approximate middle value or an approximate interpolated value." Take a look at my demo: I say they are incorrect. Returns absolutely nothing because the Oracle Docs are incorrect. SELECT add_months(TO_DATE('0'), 1) FROM dual SELECT add_months(TO_DATE('3'), 1) FROM dual SELECT add_months(TO_DATE('2'), 1) FROM dual ADD_MONTHS(left IN DATE, right IN NUMBER) RETURN DATE
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