Oracle query running indefinitely - sql

Question

I have a query that is somewhat running indefinitely, I might be going in circles here but it doesn't give me an error, just continuously runs.
Query
WITH calendar AS (
SELECT dt
FROM (
SELECT TRUNC(LAST_DAY(TO_DATE(&month || '/01/' || &year, 'MM/DD/YYYY')) - ROWNUM + 1) AS dt
FROM DUAL CONNECT BY ROWNUM <= 31
)
WHERE dt >= TRUNC(TO_DATE(&month || '/01/' || &year, 'MM/DD/YYYY'), 'MM')
ORDER BY dt ASC
)
SELECT
cal.dt,
(
SELECT NVL(SUM(rd.rate_value), 0.00)
FROM cage_dates cd
LEFT JOIN cages c ON c.id = cd.cage_id
LEFT JOIN rent_item ri ON ri.id = c.rent_item_id
LEFT JOIN rate_dates rd ON rd.rent_item_id = c.rent_item_id
WHERE c.group_id = 123
AND c.room_id = 456
AND (
LOWER(c.cage_use) NOT IN ('created in error', 'prod setup')
OR c.cage_use IS NULL
)
AND ri.display_name NOT LIKE '% BR'
AND TRUNC(cd.added) <= cal.dt
AND (
CASE
WHEN cd.removed IS NOT NULL AND TRUNC(cd.removed) >= cal.dt THEN 1
WHEN cd.removed IS NULL THEN 1
ELSE 0
END = 1
)
AND TRUNC(rd.effective_on) <= cal.dt
AND (
CASE
WHEN rd.effective_until IS NOT NULL AND TRUNC(rd.effective_until) >= cal.dt THEN 1
WHEN rd.effective_until IS NULL THEN 1
ELSE 0
END = 1
)
) AS per_diem
FROM calendar cal
ORDER BY cal.dt ASC
When I change cal.dt to TO_DATE('10/25/2017', 'MM/DD/YYYY') it gives me the correct SUM of the all the rates for that day but attaches it to all the days like so:
dt per_diem
--------------------
10/01/2017 1.19
10/02/2017 1.19
...
10/31/2017 1.19
Whereas I want something like:
dt per_diem
--------------------
10/01/2017 0
10/02/2017 1.19
10/03/2017 2.52
...
10/31/2017 0.67
Anyone have any idea?

Answer 1

I would move the subquery into a join, like this:
WITH calendar AS (
SELECT dt
FROM (
SELECT TRUNC(LAST_DAY(TO_DATE(&month || '/01/' || &year, 'MM/DD/YYYY')) - ROWNUM + 1) AS dt
FROM DUAL CONNECT BY ROWNUM <= 31
)
WHERE dt >= TRUNC(TO_DATE(&month || '/01/' || &year, 'MM/DD/YYYY'), 'MM')
)
SELECT cal.dt, NVL(SUM(rd.rate_value), 0.00)
FROM Calendar cal
LEFT JOIN cage_dates cd ON TRUNC(cd.added) = cal.dt
LEFT JOIN cages c ON c.id = cd.cage_id
LEFT JOIN rent_item ri ON ri.id = c.rent_item_id
LEFT JOIN rate_dates rd ON rd.rent_item_id = c.rent_item_id
WHERE c.group_id = 123
AND c.room_id = 456
AND (
LOWER(c.cage_use) NOT IN ('created in error', 'prod setup')
OR c.cage_use IS NULL
)
AND ri.display_name NOT LIKE '% BR'
AND (
CASE
WHEN cd.removed IS NOT NULL AND TRUNC(cd.removed) >= cal.dt THEN 1
WHEN cd.removed IS NULL THEN 1
ELSE 0
END = 1
)
AND TRUNC(rd.effective_on) <= cal.dt
AND (
CASE
WHEN rd.effective_until IS NOT NULL AND TRUNC(rd.effective_until) >= cal.dt THEN 1
WHEN rd.effective_until IS NULL THEN 1
ELSE 0
END = 1
GROUP BY cal.dt
But I am not sure what you are actually attempting with the TRUNC(cd.added) <= cal.dt at first thought is was a running sum, but perhaps you are trying to make a value appear on every day?