Define and use Date data type : Date « Data Type « Oracle PL / SQL






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

Define and use Date data type

    


SQL> set echo on;
SQL> DECLARE
  2     x         NUMBER;
  3     v_message VARCHAR2(20);
  4     v_today   DATE;
  5  BEGIN
  6     x := 10;
  7     DBMS_OUTPUT.PUT_LINE(x);
  8
  9     x := 2E5;
 10     DBMS_OUTPUT.PUT_LINE(x);
 11
 12     v_message :='www.java2s.com';
 13     DBMS_OUTPUT.PUT_LINE('v_message');
 14
 15     v_today :='01-JAN-00'; -- default date format DD-MON-YY
 16     DBMS_OUTPUT.PUT_LINE(v_today);
 17
 18     v_today := SYSDATE;     -- SQL function
 19     DBMS_OUTPUT.PUT_LINE(v_today);
 20  END;
 21  /
10
200000
v_message
01-JAN-00
09-SEP-06

PL/SQL procedure successfully completed.

SQL>








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7.check date value range
8.Insert statement converts text value to date type value
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10.Use comparison operator with date type value
11.Compare date value after to_char() and trim()
12.Compare date value with sysdate or null value
13.Use to_char to format date
14.use to_char more than once to create long date format
15.Declare date type variable and set the value at the same time
16.Differences Between Dates
17.Extract year, month, day from a date
18.Insert sysdate value to date type column
19.Use if statement to compare two date type variable
20.Assign system date to date type variable
21.Date math
22.Date type column
23.Date value calculation in to_char function
24.Date variable
25.Date/Time literals
26.New ANSI DATE literal.
27.Store hour:minute information to date type variable
28.Assign date value as string to date type variable
29.Convert the character string back to date format