Convert Update statement into Insert statement in UNIX using awk, sed....

Hi folks,

I have a scenario to convert the update statements into insert statements using shell script (awk, sed...) or in database using regex.

I have a bunch of update statements with all columns in a file which I need to convert into insert statements.

UPDATE TABLE_A SET COL1=1 WHERE COL2 is NULL AND COL2=3;

OUTPUT Should be:

INSERT INTO TABLE_A (COL1,COL2,COL3) VALUES (1,NULL,3);

Many Thanks.