Split string oracle into a single column and insert into a table

Question

I have a table with column data in below format(Row# just to indicate row number).

Row#1 :test.doc#delimiter#1234,test1.doc#delimiter#1235,test2.doc#delimit         


        

Answer 1

WITH data AS (
  SELECT 'test.doc#delimiter#1234,test1.doc#delimiter#1235,test2.doc#delimiter#1236' AS "value" FROM DUAL
  UNION ALL
  SELECT 'fil1.txt#delimiter#1456,fil1.txt#delimiter#1457' AS "value" FROM DUAL
)
SELECT  REGEXP_SUBSTR( data."value", '[^,]+', 1, levels.COLUMN_VALUE )
FROM    data,
        TABLE(
          CAST(
            MULTISET(
              SELECT LEVEL
              FROM   DUAL
              CONNECT BY  LEVEL <= LENGTH( regexp_replace( "value", '[^,]+'))  + 1
            ) AS sys.OdciNumberList
          )
        ) levels;