Oracle SELECT statement with GROUP BY and multiple WHERE clauses - sql

Question

I'm having trouble with a select query. See sample data below. I want to select the Sku records where there is no stock quantity for warehouse id 1, but there is stock quantity for warehouse id 2 & 3. Not sure what I'm doing wrong?
SAMPLE TABLE DATA
Sku WhseId Qty
============================
ABC-123 1 6
ABC-123 2 3
ABC-123 3 2
XYZ-789 1 0
XYZ-789 2 1
XYZ-789 3 3
DEF-456 1 0
DEF-456 2 0
DEF-456 3 3
QUERY
SELECT Sku, WhseId, Qty
FROM PRODUCTS
WHERE (WhseId = 1 AND Qty < 1)
AND (WhseId = 2 AND Qty > 0
AND (WhseId = 3 AND Qty > 0)
GROUP BY Sku, WhseId, Qty
DESIRED RESULT
Sku WhseId Qty
============================
XYZ-789 1 0
XYZ-789 2 1
XYZ-789 3 3

Answer 1

I think you actually want to use EXISTS for this:
SELECT Sku, WhseId, Qty
FROM PRODUCTS p
WHERE EXISTS
(SELECT 1
FROM PRODUCTS p2
WHERE p.sku = p2.sku
AND p2.whseid = 1
AND p2.qty = 0)
AND EXISTS
(SELECT 1
FROM PRODUCTS p3
WHERE p.sku = p3.sku
AND p3.whseid = 2
AND p3.qty > 0)
AND EXISTS
(SELECT 1
FROM PRODUCTS p4
WHERE p.sku = p4.sku
AND p4.whseid = 3
AND p4.qty > 0)

Answer 2

Use aggregation and a having clause:
SELECT Sku
FROM PRODUCTS
GROUP BY Sku
HAVING SUM(CASE WHEN WhseId = 1 AND Qty < 1 THEN 1 ELSE 0 END) > 0 AND
SUM(CASE WHEN WhseId = 2 AND Qty > 0 THEN 1 ELSE 0 END) > 0 AND
SUM(CASE WHEN WhseId = 3 AND Qty > 0 THEN 1 ELSE 0 END) > 0;

Answer 3

SELECT
Sku,
WhseId,
Qty
FROM
(
SELECT
PRODUCTS.*,
SUM(CASE WHEN WhseId = 1 THEN Qty END) OVER (PARTITION BY Sku) AS whse1_qty,
SUM(CASE WHEN WhseId = 2 THEN Qty END) OVER (PARTITION BY Sku) AS whse2_qty,
SUM(CASE WHEN WhseId = 3 THEN Qty END) OVER (PARTITION BY Sku) AS whse3_qty
FROM
PRODUCTS
)
pivotted
WHERE
whse1_qty < 1
AND whse2_qty > 0
AND whse3_qty > 0

Answer 4

A simple solution:
select sku, whseid, qty
from etst
where sku = 'XYZ-789' and ((whseid = 1 and qty < 1)
or (whseid = 2 and qty > 0)
or (whseid = 3 and qty > 0))
group by sku, whseid, qty;

Answer 5

CREATE VIEW get_skus_2 AS
SELECT Sku
FROM PRODUCTS
WHERE Qty>0 AND WhseId=2;
CREATE VIEW get_skus_3 AS
SELECT Sku
FROM PRODUCTS
WHERE Qty>0 AND WhseId=3;
SELECT Sku s, WhseId, Qty
FROM get_skus_2 g2 JOIN get_skus_3 g3 ON g2.Sku = g3.Sku
WHERE s IN (
SELECT Sku
FROM PRODUCTS
WHERE Qty=0 AND WhseId=1);

Answer 6

How about combining IN with a GROUP BY on Sku?
SELECT Sku, WhseId, Qty
FROM PRODUCTS
WHERE Sku IN (
SELECT Sku
FROM PRODUCTS
WHERE WhseId IN (1, 2, 3)
GROUP BY Sku
HAVING MAX(CASE WHEN WhseId = 1 THEN Qty END) = 0
AND MAX(CASE WHEN WhseId = 2 THEN Qty END) > 0
AND MAX(CASE WHEN WhseId = 3 THEN Qty END) > 0
)
ORDER BY Sku, WhseId;
Result:
Sku WhseId Qty
------- ------ ---
XYZ-789 1 0
XYZ-789 2 1
XYZ-789 3 3
SQL Fiddle