Question

I need to show more than one result from each field in a table. I need to do this with only one SQL sentence, I don´t want to use a Cursor.

This seems silly, but the number of rows may vary for each item. I need this to print afterwards this information as a Crystal Report detail.

Suppose I have this table:

idItem     Cantidad     <more fields>
--------  -----------
    1000         3
    2000         2
    3000         5
    4000         1

I need this result, using one only SQL Sentence:

1000
1000
1000
2000
2000
3000
3000
3000
3000
3000
4000

where each idItem has Cantidad rows.

Any ideas?

Answer 1

It seems like something that should be handled in the UI (or the report). I don’t know Crystal Reports well enough to make a suggestion there. If you really, truly need to do it in SQL, then you can use a Numbers table (or something similar):

SELECT
    idItem
FROM
    Some_Table ST
INNER JOIN Numbers N ON
    N.number > 0 AND
    N.number <= ST.cantidad

You can replace the Numbers table with a subquery or function or whatever other method you want to generate a result set of numbers that is at least large enough to cover your largest cantidad.