Question

I’m working with Microsoft SQL

I have a table CR_INVLINES that shows something like below

STOCKCODE     QTY   BARCODE  
GUITAR101     3     456812313
DESK          1     568123122
LAMP          2     845646962

What I need my view to return is the lines at the multiples of the qty like below:

STOCKCODE       BARCODE
GUITAR101       456812313
GUITAR101       456812313
GUITAR101       456812313
DESK            568123122
LAMP            845646962
LAMP            845646962

Answer 1

You can use a recursive CTE to get the result:

;WITH CTE AS
(
    SELECT *
    FROM CR_INVLINES
    UNION ALL 
    SELECT stockcode, qty-1, BARCODE
    FROM CTE
    WHERE qty-1 >= 1
)
SELECT STOCKCODE, Barcode
FROM CTE
order by stockcode
OPTION(MAXRECURSION 0);

See SQL Fiddle with Demo

This gives the result:

| STOCKCODE |   BARCODE |
-------------------------
|      DESK | 568123122 |
| GUITAR101 | 456812313 |
| GUITAR101 | 456812313 |
| GUITAR101 | 456812313 |
|      LAMP | 845646962 |
|      LAMP | 845646962 |