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

A simple method uses recursive CTEs:

with cte as (
      select requsition, quantity, 1 as series
      from t
      union all
      select requsition, quantity, 1 + series
      from t
      where lev < quantity
    )
select requsition, quantity, series
from cte;

With default setting, this works up to a quantity of 100. For larger quantities, you can add option (maxrecursion 0) to the query.