Function in oracle

Question

If i pass the parameter like "select *from split('672','asdfg')"
when i execute the function in sqlserver..
it will give the following o/p:
RowID value
1     asdfg
I want the same o/p in oracle using function....
below i gave the sample function in sql server:
alter FUNCTION [dbo].[Split]
( @Delimiter varchar(5),
@List varchar(8000)
RETURNS @TableOfValues table
( RowID smallint IDENTITY(1,1),
[Value] varchar(50)
AS
BEGIN
DECLARE @LenString int
WHILE len( @List ) > 0
BEGIN
SELECT @LenString =
(CASE charindex( @Delimiter, @List )
WHEN 0 THEN len( @List )
ELSE ( charindex( @Delimiter, @List ) -1 )
END
INSERT INTO @TableOfValues
SELECT substring( @List, 1, @LenString )
SELECT @List =
(CASE ( len( @List ) - @LenString )
WHEN 0 THEN ''
ELSE right( @List, len( @List ) - @LenString - 1 )
END
END
RETURN
END
execute: select *from split('672','asdfg')
----------------------------------------------

Answer 1

user613197 wrote:
If i pass the parameter like "select *from split('672','asdfg')"
when i execute the function in sqlserver..
it will give the following o/p:
RowID value
1     asdfgI'm not quite sure why you have "672" as a delimiter in a split function as that seems a very poor example, or maybe I'm just not understanding what your SQL Server split function is supposed to be doing.
On Oracle, a simple split function that takes a string of delimited values and splits them up to generate seperate rows of data would be something like...
SQL> CREATE OR REPLACE TYPE split_tbl IS TABLE OF VARCHAR2(32767);
  2  /
Type created.
SQL> CREATE OR REPLACE FUNCTION split (p_list VARCHAR2, p_delim VARCHAR2:=' ') RETURN SPLIT_TBL PIPELINED IS
  2      l_idx    PLS_INTEGER;
  3      l_list   VARCHAR2(32767) := p_list;
  4      l_value  VARCHAR2(32767);
  5    BEGIN
  6      LOOP
  7        l_idx := INSTR(l_list, p_delim);
  8        IF l_idx > 0 THEN
  9          PIPE ROW(SUBSTR(l_list, 1, l_idx-1));
10          l_list := SUBSTR(l_list, l_idx+LENGTH(p_delim));
11        ELSE
12          PIPE ROW(l_list);
13          EXIT;
14        END IF;
15      END LOOP;
16      RETURN;
17    END SPLIT;
18  /
Function created.
SQL> SELECT column_value
  2  FROM TABLE(split('FRED,JIM,BOB,TED,MARK',','));
COLUMN_VALUE
FRED
JIM
BOB
TED
MARKor, simply in SQL alone you could do...
SQL> ed
Wrote file afiedt.buf
  1  with t as (select 'aaaa;;bbbb;cccc;dddd;eeee;ffff' as txt from dual)
  2  -- end of sample data
  3  select REGEXP_SUBSTR (txt, '[^;]+', 1, level)
  4  from t
  5* connect by level <= length(regexp_replace(txt,'[^;]*'))+1
SQL> /
REGEXP_SUBSTR(TXT,'[^;]+',1,LE
aaaa
bbbb
cccc
dddd
eeee
ffff
7 rows selected.
SQL>