Time Date formatting

From: Peter Hazelton <peterhazelton_at_hotmail.com>
Date: Thu, 10 Aug 2000 17:42:34 GMT
Message-Id: <10585.114282@fatcity.com>

What I am trying to do is just take a date formatted out to the hour and minute and subtract it from another date formatted out to the hour and minute. Most of the dates I deal with are less than one day and I need to know the difference in times between them. Here is my output:

SQL> ed
Wrote file afiedt.buf
  1 create table date_table
  2 (date1 date,
  3* date2 date)
SQL> / Table created.

SQL> ed
Wrote file afiedt.buf
  1 insert into date_table
  2 (date1)
  3* values (sysdate)
SQL> / 1 row created.

SQL> select to_char(date1,'DD-MON-YYYY HH24:MI:SS') 2 from date_table;

TO_CHAR(DATE1,'DD-MON-YYYYHH24:MI:SS')

06-AUG-2000 12:44:52 SQL> ed
Wrote file afiedt.buf
  1 insert into date_table
  2 (date2)
  3* values (sysdate)
SQL> / 1 row created.

SQL> commit;

Commit complete.

SQL> ed
Wrote file afiedt.buf
1 select to_char(date2,'DD-MON-YYYY
HH24:MI:SS')-to_char(date1,'DD-MON-YYYY HH24:MI:SS') 2* from date_table
SQL> /
ERROR:
ORA-01722: invalid number

no rows selected

SQL> ed
Wrote file afiedt.buf
1 select to_date(date2,'DD-MON-YYYY
HH24:MI:SS')-to_date(date1,'DD-MON-YYYY HH24:MI:SS') 2* from date_table
SQL> /
ERROR:
ORA-01840: input value not long enough for date format

no rows selected

SQL> select to_char(date1,'DD-MON-YYYY HH24:MI:SS') 2 from date_table;

TO_CHAR(DATE1,'DD-MON-YYYYHH24:MI:SS')

06-AUG-2000 12:44:52 SQL> ed
Wrote file afiedt.buf
1 select to_char(date2,'DD-MON-YYYY HH24:MI:SS') 2* from date_table
SQL> / TO_CHAR(DATE2,'DD-MON-YYYYHH24:MI:SS')

06-AUG-2000 12:46:13 SQL> ed
Wrote file afiedt.buf
1 select to_date(date2,'DD-MON-YYYY HH24:MI:SS') 2* from date_table
SQL> /
ERROR:
ORA-01840: input value not long enough for date format

no rows selected

SQL> ed
Wrote file afiedt.buf
1 select to_char(to_date(date2,'DD-MON-YYYY HH24:MI:SS'))-to_char(to_date(date1,'DD-MON-YYYY HH24 2* from date_table
SQL> /
ERROR:
ORA-01840: input value not long enough for date format

no rows selected

SQL> ed
Wrote file afiedt.buf
  1 select to_date(to_char(date2,'DD-MON-YYYY HH24:MI:SS'),'DD-MON-YYYY HH24:MI:SS'))-to_date(to_ch
  2* from date_table
SQL> /
select to_date(to_char(date2,'DD-MON-YYYY HH24:MI:SS'),'DD-MON-YYYY HH24:MI:SS'))-to_date(to_char(da

*
ERROR at line 1:
ORA-00923: FROM keyword not found where expected

SQL> ed
Wrote file afiedt.buf
1 select to_date(to_char(date2,'DD-MON-YYYY HH24:MI:SS'),'DD-MON-YYYY HH24:MI:SS')-to_date(to_cha
2* from date_table
SQL> / TO_DATE(TO_CHAR(DATE2,'DD-MON-YYYYHH24:MI:SS'),'DD-MON-YYYYHH24:MI:SS')-TO_DATE(TO_CHAR(DATE1,'DD-MO

SQL> ed
Wrote file afiedt.buf
  1 insert into date_table
  2 (date1)
  3* values (to_date(sysdate )
SQL> /
values (to_date(sysdate )

ERROR at line 3:
ORA-00917: missing comma

SQL> ed
Wrote file afiedt.buf
  1 insert into date_table
  2 (date1)
  3* values (to_date(sysdate,'DD-MON-YYYY HH24:MI:SS')) SQL> /
insert into date_table
*
ERROR at line 1:
ORA-01840: input value not long enough for date format

SQL> ed
Wrote file afiedt.buf
  1 insert into date_table
  2 (date1)
  3* values (to_char(sysdate,'DD-MON-YYYY HH24:MI:SS')) SQL> /
values (to_char(sysdate,'DD-MON-YYYY HH24:MI:SS'))

*
ERROR at line 3:
ORA-01830: date format picture ends before converting entire input string

SQL> ed
Wrote file afiedt.buf
  1 insert into date_table
  2 (date1)
  3 values (
  4* (sysdate,'DD-MON-YYYY HH24:MI:SS'))

SQL>
SQL>
SQL>
SQL> ed

Wrote file afiedt.buf
1 select to_char(date1,'DD-MON-YYYY
HH24:MI:SS'),to_char(date2,'DD-MON-YYYY HH24:MI:SS') 2* from date_table
SQL> /

TO_CHAR(DATE1,'DD-MON-YYYYHH24:MI:SS')


---------------------------------------------------------------------------

TO_CHAR(DATE2,'DD-MON-YYYYHH24:MI:SS')


---------------------------------------------------------------------------

06-AUG-2000 12:44:52

06-AUG-2000 12:46:13 SQL> ed
Wrote file afiedt.buf
  1 select to_date(to_char(date2,'DD-MON-YYYY HH24:MI:SS'),'DD-MON-YYYY HH24:MI:SS')-
  2 to_date(to_char(date1,'DD-MON-YYYY HH24:MI:SS'),'DD-MON-YYYY HH24:MI:SS')
  3* from date_table
SQL> / TO_DATE(TO_CHAR(DATE2,'DD-MON-YYYYHH24:MI:SS'),'DD-MON-YYYYHH24:MI:SS')-TO_DATE(TO_CHAR(DATE1,'DD-MO

SQL> ed
Wrote file afiedt.buf
  1 select to_date(to_char(date2,'DD-MON-YYYY HH24:MI:SS'),'DD-MON-YYYY HH24:MI:SS')-
  2 to_date(to_char(date1,'DD-MON-YYYY HH24:MI:SS'),'DD-MON-YYYY HH24:MI:SS')
  3* from date_table
SQL>
SQL> / TO_DATE(TO_CHAR(DATE2,'DD-MON-YYYYHH24:MI:SS'),'DD-MON-YYYYHH24:MI:SS')-TO_DATE(TO_CHAR(DATE1,'DD-MO

SQL> select to_date(sysdate,'DD-MON-YYYYHH24:MI:SS') 2 from dual;
ERROR:
ORA-01840: input value not long enough for date format

no rows selected

SQL> ed
Wrote file afiedt.buf
1 select to_char(sysdate,'DD-MON-YYYYHH24:MI:SS') 2* from dual
SQL> / TO_CHAR(SYSDATE,'DD-MON-YYYYHH24:MI:SS')

06-AUG-200013:05:23 SQL> ed
Wrote file afiedt.buf
1 select
to_date(to_char(sysdate,'DD-MON-YYYYHH24:MI:SS'),'DD-MON-YYYYHH24:MI:SS') 2* from dual
SQL> / TO_DATE(T

06-AUG-00 SQL>
SQL> ed
Wrote file afiedt.buf
1 select
to_date(to_char(sysdate,'DD-MON-YYYYHH24:MI:SS'),'DD-MON-YYYYHH24:MI:SS') 2* from dual
SQL>
SQL> / TO_DATE(T

Received on Thu Aug 10 2000 - 12:42:34 CDT