Use DATE to mark a string as date value : Date « Data Type « Oracle PL / SQL






  1. Oracle PL / SQL
  2. Data Type
  3. Date

Use DATE to mark a string as date value

     
SQL>
SQL> create table MyTable (
  2        event_name    varchar2(100),
  3        event_date    date);

Table created.

SQL>
SQL> insert into MyTable ( event_name, event_date ) values ( 'Oracle', TO_DATE( '2-DEC-2001', 'DD-MON-YYYY' ) );

1 row created.

SQL>
SQL> insert into MyTable ( event_name, event_date ) values ( 'Sample code', SYSDATE );

1 row created.

SQL>
SQL> column event_name format a40
SQL>
SQL> select * from MyTable;

EVENT_NAME                               EVENT_DATE
---------------------------------------- ------------------
Oracle                                   02-DEC-01
Sample code                              10-JUN-08

SQL>
SQL> insert into MyTable (event_name, event_date) values ('World', TO_DATE( '2-DEC-2001', 'DD-MON-YYYY' ) );

1 row created.

SQL>
SQL> insert into MyTable ( event_name, event_date ) values ( 'code', SYSDATE );

1 row created.

SQL>
SQL> show parameters nls_date_format

NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
nls_date_format                      string
SQL>
SQL> insert into MyTable ( event_name, event_date ) values ( '9i', DATE '2001-10-11' );

1 row created.

SQL>
SQL> select * from MyTable;

EVENT_NAME                               EVENT_DATE
---------------------------------------- ------------------
Oracle                                   02-DEC-01
Sample code                              10-JUN-08
World                                    02-DEC-01
code                                     10-JUN-08
9i                                       11-OCT-01

SQL>
SQL> drop table MyTable;

Table dropped.

SQL>








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19.Use if statement to compare two date type variable
20.Assign system date to date type variable
21.Date math
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23.Date value calculation in to_char function
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26.New ANSI DATE literal.
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