Extract year, month, day from a date : Date « Data Type « Oracle PL / SQL

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Oracle PL / SQL » Data Type » Date 




Extract year, month, day from a date
    

SQL> create table emp
  2  empno      NUMBER(4)    constraint E_PK primary key
  3  , ename      VARCHAR2(8)
  4  , init       VARCHAR2(5)
  5  , job        VARCHAR2(8)
  6  , mgr        NUMBER(4)
  7  , bdate      DATE
  8  , sal       NUMBER(6,2)
  9  , comm       NUMBER(6,2)
 10  , deptno     NUMBER(2)    default 10
 11  ;

Table created.

SQL> insert into emp values(1,'Tom','N',   'Coder', 13,date '1965-12-17',  800 , NULL,  20);

row created.

SQL> insert into emp values(2,'Jack','JAM', 'Tester',6,date '1961-02-20',  1600300,   30);

row created.

SQL> insert into emp values(3,'Wil','TF' ,  'Tester',6,date '1962-02-22',  1250500,   30);

row created.

SQL> insert into emp values(4,'Jane','JM',  'Designer', 9,date '1967-04-02',  2975, NULL,  20);

row created.

SQL> insert into emp values(5,'Mary','P',  'Tester',6,date '1956-09-28',  12501400,  30);

row created.

SQL> insert into emp values(6,'Black','R',   'Designer', 9,date '1963-11-01',  2850, NULL,  30);

row created.

SQL> insert into emp values(7,'Chris','AB',  'Designer', 9,date '1965-06-09',  2450, NULL,  10);

row created.

SQL> insert into emp values(8,'Smart','SCJ', 'Coder', 4,date '1959-11-26',  3000, NULL,  20);

row created.

SQL> insert into emp values(9,'Peter','CC',   'Designer',NULL,date '1952-11-17',  5000, NULL,  10);

row created.

SQL> insert into emp values(10,'Take','JJ', 'Tester',6,date '1968-09-28',  15000,     30);

row created.

SQL> insert into emp values(11,'Ana','AA',  'Coder', 8,date '1966-12-30',  1100, NULL,  20);

row created.

SQL> insert into emp values(12,'Jane','R',   'Manager',   6,date '1969-12-03',  800 , NULL,  30);

row created.

SQL> insert into emp values(13,'Fake','MG',   'Coder', 4,date '1959-02-13',  3000, NULL,  20);

row created.

SQL> insert into emp values(14,'Mike','TJA','Manager',   7,date '1962-01-23',  1300, NULL,  10);

row created.

SQL>
SQL>
SQL> select bdate
  2  ,      extract(year  from bdateas year_of_birth
  3  ,      extract(month from bdateas month_of_birth
  4  ,      extract(day   from bdateas day_of_birth
  5  from   emp
  6  where  ename = 'Peter';

BDATE      YEAR_OF_BIRTH MONTH_OF_BIRTH DAY_OF_BIRTH
---------- ------------- -------------- ------------
17-11-1952          1952             11           17

SQL>
SQL>
SQL> drop table emp;

Table dropped.

   
    
    
    
  














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4.Use DATE to mark a string as date value
5.Use SYSDATE in insert statement
6.Initialize value with date functions
7.Set date value to SYSDATE
8.check date value range
9.Insert statement converts text value to date type value
10.Are two dates equal
11.Use comparison operator with date type value
12.Compare date value after to_char() and trim()
13.Compare date value with sysdate or null value
14.Use to_char to format date
15.use to_char more than once to create long date format
16.Declare date type variable and set the value at the same time
17.Differences Between Dates
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
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