How to split up name

Question

Dear All,
I have a column calles as customer name which contains data like:
akshay singh
vishal kumar jain
shruti jain
Now I need to write a sql query such that my query returns:
akshay
singh
vishal
kumar
jain
shruti
jain
i.e. 1st output-first name,second output-last name
thanks in advance
Message was edited by:
Ballu

Answer 1

may be this? you will have to play arround as per your requirement.
SQL> WITH T AS
  2       (SELECT 'Rob Billy Dev' c
  3          FROM DUAL
  4        UNION ALL
  5        SELECT 'Ballu Mallu Kallu'
  6          FROM DUAL),
  7       t2 AS
  8       (SELECT ' ' || c || ' ' c
  9          FROM T)
10  SELECT DISTINCT SUBSTR (c,
11                          INSTR (c, ' ', 1, LEVEL) + 1,
12                          INSTR (c, ' ', 1, LEVEL + 1) - INSTR (c, ' ', 1, LEVEL) - 1) "String"
13             FROM t2
14       CONNECT BY LEVEL < LENGTH (c) - LENGTH (REPLACE (c, ' ') );
String
Ballu
Billy
Dev
Kallu
Mallu
Rob
6 rows selected.
Elapsed: 00:00:00.00
SQL> WITH T AS
  2    (SELECT 'ROCK ' str FROM dual
  3    UNION ALL
  4    SELECT 'DOCK Dd' FROM dual
  5    UNION ALL
  6    SELECT 'DOCK D Md' FROM dual
  7    UNION ALL
  8    SELECT 'DOCK D M Cdd' FROM dual
  9    )
10  SELECT ( CASE WHEN INSTR(str,' ',1) >0 THEN
11             SUBSTR(str,1,INSTR(str,' ',1))
12         END )first_name,
13          (CASE WHEN    INSTR(str,' ',1,1) >0 THEN
14               SUBSTR(str,INSTR(str,' ',1,1),
15               DECODE(INSTR(str,' ',1,2),0,INSTR(str,' ',1,1),(INSTR(str,' ',1,2)-INSTR(str,' ',1,1)) ))
16          END) middle_name ,
17          (CASE WHEN    INSTR(str,' ',1,2) >0 THEN
18               SUBSTR(str,INSTR(str,' ',1,2),
19                        DECODE(INSTR(str,' ',1,3),0,INSTR(str,' ',1,2),(INSTR(str,' ',1,3)-INSTR(str,' ',1,2)) ))
20           END) Last_name,  
21          (CASE WHEN    INSTR(str,' ',1,3) >0 THEN
22               SUBSTR(str,INSTR(str,' ',1,3),
23                        DECODE(INSTR(str,' ',1,4),0,INSTR(str,' ',1,3),(INSTR(str,' ',1,4)-INSTR(str,' ',1,3)) ))
24           END) Suffix
25    FROM T
26 
SQL> /
FIRST_NAME   MIDDLE_NAME  LAST_NAME    SUFFIX
ROCK
DOCK          Dd
DOCK          D            Md
DOCK          D            M            Cdd
Elapsed: 00:00:00.00
SQL>