Formating output

Hello Team i have a file with following data (as columns).
I need implement a syntax like below for altering table

ALTER TABLE1 TABLENAME
ADD COLUMN COL1 CHAR(5) NOT NULL WITH DEFAULT
ADD COLUMN COL2 CHAR(5)
..
..

ADD COLUMN COLn CHAR(5) NOT NULL WITH DEFAULT

The columns in a file are as below.where eve

COLUMNS DATATYPE NULL

COL1 CHAR(5) YES
COL2 CHAR(5) NO
.. CHAR(5)
. . CHAR(5)
COL N CHAR(5) YES

Any suggessions how to implement above mentioend syntax using the columns information from the file?
Regards

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