decode column data to output more meaningful information : DECODE « Conversion Functions « Oracle PL / SQL

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Oracle PL / SQL » Conversion Functions » DECODE 
decode column data to output more meaningful information
    

SQL> create table gift(
  2           gift_id                integer         primary key
  3          ,emp_id                integer
  4          ,register_date              date not null
  5          ,total_price        number(7,2)
  6          ,deliver_date           date
  7          ,deliver_time           varchar2(7)
  8          ,payment        varchar2(2)
  9          ,emp_no                 number(3,0)
 10          ,deliver_name           varchar2(35)
 11          ,message        varchar2(100)
 12  );

Table created.

SQL>
SQL> insert into gift(gift_id,emp_id,register_date,total_price,deliver_date,deliver_time,payment,emp_no,deliver_name,message)values
  2                 (1,1,'14-Feb-1999', 123.12'14-Feb-1999', '12 noon', 'CA',1, null, 'Happy Birthday to you');

row created.

SQL> insert into gift(gift_id  ,emp_id ,register_date ,total_price ,deliver_date ,deliver_time ,payment ,emp_no,deliver_name ,message)values
  2                 (2,1,'14-Feb-1999', 50.98'14-feb-1999', '1 pm', 'CA',7'name1', 'Happy Birthday');

row created.

SQL> insert into gift(gift_id  ,emp_id ,register_date ,total_price ,deliver_date ,deliver_time,payment ,emp_no,deliver_name ,message )values
  2                 (32,'14-Feb-1999', 35.99'14-feb-1999', '1 pm', 'VS',2'Tom', 'Happy Birthday');

row created.

SQL> insert into gift(gift_id  ,emp_id ,register_date ,total_price ,deliver_date ,deliver_time,payment ,emp_no,deliver_name ,message )values
  2                 (42,'14-Feb-1999', 19.95'14-feb-1999', '5 pm', 'CA',2'Mary', 'Happy Birthday');

row created.

SQL> insert into gift(gift_id  ,emp_id ,register_date ,total_price ,deliver_date ,deliver_time,payment ,emp_no,deliver_name ,message)values
  2                 (56,'4-mar-1999', 10.95'5-mar-1999', '4:30 pm', 'VS', 2'Jack', 'Happy Birthday');

row created.

SQL>
SQL>
SQL>
SQL> select gift_id, decode(payment,
  2  'VS', 'VISA Card Standard',
  3  'VG', 'VISA Gold Card',
  4  'AX', 'American Express',
  5  'MC', 'Master Card',
  6  'DI', 'Discover Card',
  7  'CA', 'Cash',
  8  'CK', 'Check',
  9  'Unknown')
 10    from gift ;

   GIFT_ID DECODE(PAYMENT,'VS
---------- ------------------
         Cash
         Cash
         VISA Card Standard
         Cash
         VISA Card Standard

rows selected.

SQL>
SQL>
SQL> drop table gift;

Table dropped.

   
    
    
    
  
Related examples in the same category
1. Syntax: DECODE
2. Decode char value to number
3. Decode statement could be easily rewritten using the CASE statement
4. Decode for more than one key value pair
5. Use Decode as if statement to logic like 'if then else'
6. DECODE and GROUPING
7. Create a report that shows number of customers per state.
8. Use DECODE and SIGN functions on the ORD table
9. Extract any procedure, function or package
10. Decode the result from row_number over, partition by, order by
11. Decode a column with substr and instr
12. DECODE and substr function
13. Format nullable heading
14. DECODE in the GROUP BY clause
15. Demo range comparison with DECODE
16. Use decode as if statement and output 'high' or 'low'
17. Use decode create dynamic select statement
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