How to split the columns? - sql

Question

Name Nameid
P,q,r,s,t One
A,b,c Two
D,e Three
This is my source table, but i want my target table like this
Name Nameid
P One
Q One
R One
S One
T One
A Two
B Two
C Two
D three

Answer 1

In a case like this, I think it would be more elegant to store the data in a different way.
If you are inserting your rows from a program, try splitting your string there, and insert a few more rows instead.
Let me give you a pseudo code example.
number = "One"
many_letters = "P,Q,R,S,T".split(",")
for(letter in many_letters) {
insert_values(letter, number)
}

Answer 2

Here's one way, lifted from here:
SQL> CREATE TABLE t (name VARCHAR2(20), nameid VARCHAR2(10));
Table created.
SQL> INSERT INTO t VALUES ('P,q,r,s,t','One');
1 row created.
SQL> INSERT INTO t VALUES ('A,b,c' ,'Two');
1 row created.
SQL> INSERT INTO t VALUES ('D,e' ,'Three');
1 row created.
SQL> SELECT nameid
2 , REGEXP_SUBSTR (name, '[^,]+', 1, LEVEL) AS token
3 FROM t
4 CONNECT BY PRIOR nameid = nameid
5 AND REGEXP_INSTR (name, '[^,]+', 1, LEVEL) > 0
6 AND PRIOR DBMS_RANDOM.STRING ('p', 10) IS NOT NULL
7 ;
NAMEID TOKEN
---------- --------------------
One P
One q
One r
One s
One t
Three D
Three e
Two A
Two b
Two c
10 rows selected.
SQL>

Answer 3

Sorry I didn't understand the question it was posted. It's been reformatted since.
Oracle does not have a built in Split function, which is what you need here. The following link shows how to create a custom Split function:
http://srinisreeramoju.blogspot.com/2010/03/oracle-custom-split-function.html
Once you've created the types and the function you would simply call it as:
SELECT
Split(Name, ',') AS Name,
NameID
FROM
YourTable