Using REGEXP_REPLACE in oracle 10g for repetition of the source string

Question

Hello all,
I kept trying but unsuccessful, Here is what i would like.
I have a source string and i would like that to be repeated in the way i would like.
Let say, i have about 50 tables to write update statements for each with the same table from another database.
So, I would like to take the columns i need for each table, use a regular expression and create a set clause.
FOR EXAMPLE
say, a table has 3 columns
Source string is 'TABLE_COLUMN_1_ID,TABLE_COLUMN_2_VALUE,TABLE_COLUMN_3_DESC'
I would like to use regular expressions in 10g and get this
desired o/p
'TABLE_COLUMN_1_ID = TABLE_COLUMN_1_ID,TABLE_COLUMN_2_VALUE = TABLE_COLUMN_2_VALUE,TABLE_COLUMN_3_DESC = TABLE_COLUMN_3_DESC'
I thought s its easy with my knowledge of expressions but still struggling.
Any help is greatly appreciated.
Thanks.

Answer 1

Something like this ?
SELECT REGEXP_REPLACE('TABLE_COLUMN_1_ID,TABLE_COLUMN_2_VALUE,TABLE_COLUMN_3_DESC',
                      '([^,]+)', ' \1 = \1') x
FROM DUAL;
X
TABLE_COLUMN_1_ID = TABLE_COLUMN_1_ID, TABLE_COLUMN_2_VALUE = TABLE_COLUMN_2_VALUE, TABLE_COLUMN_3_DESC = TABLE_COLUMN_3_DESC