Generating Rows Based on Column Value

Question

One of my tables in my database contains rows with requisition numbers and other related info. I am trying to create a second table (populated with an INSERT INTO

Answer 1

Non-recursive way:

SELECT *
FROM tab t
CROSS APPLY (SELECT n
             FROM (SELECT ROW_NUMBER() OVER(ORDER BY 1/0) AS n
                   FROM master..spt_values s1) AS sub
             WHERE  sub.n <= t.Quantity) AS s2(Series);

db<>fiddle demo