Writing Syntax Case When - oracle-sqldeveloper

Question

I need help from you guys regarding my task.
1.
SELECT * FROM DBMGR.RTREDC00
WHERE EDC_PARM = '9940-RESOE'
AND EDC_LOT = 'H28BRAD'`
2.
SELECT LSPEC.GET_LSPEC_MIN((SELECT RL_PO FROM DBMGR.RTRLOT01 WHERE
RL_FACILITY = 'MKLPROD' AND RL_LOT = 'H28BRAD'),'9940-RES','M') MIN_RAS,
LSPEC.GET_LSPEC_MAX((SELECT RL_PO FROM DBMGR.RTRLOT01 WHERE RL_FACILITY
= 'MKLPROD' AND RL_LOT = 'H28BRAD'),'9940-RES','M') MAX_RAS
FROM DUAL
I need to create syntax using CASE WHEN where edc_value between MIN_RAS and MAX_RAS the output will come out blank and if the edc_value not in between MIN_RAS and MAX_RAS the output will be edc_lot.

Answer 1

I believe this is what you are looking for.
--solution using common table expression and cross join
WITH
B AS ( --B for BOUNDS
SELECT
LSpec.Get_lspec_min(
(
SELECT rl_po
FROM DBMgr.rtrlot01
WHERE rl_facility = 'MKLPROD'
AND rl_lot = 'H28BRAD'
),
'9940-RES',
'M'
) AS min_ras,
LSpec.Get_lspec_max(
(
SELECT rl_po
FROM DBMgr.rtrlot01
WHERE rl_facility = 'MKLPROD'
AND rl_lot = 'H28BRAD'
),
'9940-RES',
'M'
) AS max_ras
FROM dual
)
SELECT
R.edc_facility,
R.edc_parm,
R.edc_lot,
R.edc_unit,
R.edc_waf_id,
R.edc_seq,
R.edc_value,
CASE
WHEN R.edc_value >= B.min_ras AND edc_value <= B.max_ras THEN NULL
ELSE R.edc_lot
END AS logic_requirement -- here is your requirement
FROM DBMgr.RTREDC00 R
CROSS JOIN B
WHERE R.edc_parm = '9940-RESOE'
AND R.edc_lot = 'H28BRAD'
;
--solution using scalar subqueries within CASE statement of SELECT clause
SELECT
R.edc_facility,
R.edc_parm,
R.edc_lot,
R.edc_unit,
R.edc_waf_id,
R.edc_seq,
R.edc_value,
CASE
WHEN edc_value >= (
SELECT
LSpec.Get_lspec_min(
(
SELECT rl_po
FROM DBMgr.rtrlot01
WHERE rl_facility = 'MKLPROD'
AND rl_lot = 'H28BRAD'
),
'9940-RES',
'M'
)
FROM Dual
)
AND edc_value <= (
SELECT
LSpec.Get_lspec_max(
(
SELECT rl_po
FROM DBMgr.rtrlot01
WHERE rl_facility = 'MKLPROD'
AND rl_lot = 'H28BRAD'
),
'9940-RES',
'M'
) AS max_ras
FROM Dual
)
THEN NULL
ELSE edc_lot
END AS logic_requirement
FROM DBMgr.RTREDC00
WHERE edc_parm = '9940-RESOE'
AND edc_lot = 'H28BRAD'
;