command level parameters in crystal reports - crystal-reports

Question

I have a report having 2 parameters carton and location.
Suppose if I didn't gave any value among those then it should give all values.
So created 2 command level parameters.Its showing all values whenever I didnt gave any values in parameters.
But even If I gave some value in either carton or location but still its showing all values.
Please suggest what is the problem
SELECT
crt.carton_no, crtd.part_no, SUM(crtd.quantity) AS quantity,
crtd.barcode, crtd.item_description
, crt.put_away_location AS putAway
FROM
carton crt, carton_details crtd
WHERE
crt.carton_id = crtd.carton_id
AND crt.status = 'N' AND
( crt.carton_no like '{?cartonno}' or '{?cartonno}' like '%' ) and (crt.put_away_location LIKE '{?location}' or '{?location}' like '%')
GROUP BY
crt.carton_no, crtd.carton_id, crtd.part_no
ORDER BY
crt.put_away_location, crt.carton_no

Answer 1

I guess your query is always taking true ignoring or condition... try using Case
where
CASE WHEN {?cartonno} Like ""
THEN
'{?cartonno}' like '%'
ELSE
crt.carton_no like '{?cartonno}'
END
Note: I don't know which database you are using above is just an example of SQL... you can change it as required and use similarly for other parameter in where clause