![]() 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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