Left outer join invalid identifier - sql

Question

I can't seem to get these left outer joins right using derived tables. I need to do it this way as I need to use a subquery in the qualification.
The error I am receiving is ORA-00904: "E"."ENCNTR_ID": invalid identifier
I've tried moving the position of the join around and reversing the columns around the =. There's plenty of posts out there related to this but none of them have provided me the answer. Many are in regards to having multiple tables comma delimited in the FROM clause but my query doesn't have that.
SELECT
E.ENCNTR_ID
,E.REASON_FOR_VISIT
-- ,D.DIAGNOSIS_DISPLAY AS DISCHARGE_DX
-- ,D.DIAG_FTDESC AS WORKING_DX
,cclsql_cnvtdatetimeutc(E.REG_DT_TM, 2, 126) as reg_dt_tm
,cclsql_cnvtdatetimeutc(E.DISCH_DT_TM, 2, 126) as disch_dt_tm
,FACILITY.DISPLAY AS FACILITY
,P.PERSON_ID
,P.NAME_FULL_FORMATTED
,cclsql_cnvtdatetimeutc(P.BIRTH_DT_TM, 2, P.BIRTH_TZ) as birth_dt_tm
,MRN.ALIAS AS MRN
,FIN.ALIAS AS FIN
,ENC_TYPE.DISPLAY AS ENCOUNTER_TYPE
,NURSE_UNIT.DISPLAY AS NURSE_UNIT
,ROOM.DISPLAY AS ROOM
,BED.DISPLAY AS BED
,ADMITDOC_NAME.NAME_FULL_FORMATTED AS ADMITDOC_NAME
,DCDOC_NAME.NAME_FULL_FORMATTED AS DCDOC_NAME
,ADMIT_SRC.DISPLAY AS ADMIT_SOURCE
,ADMIT_TYPE.DISPLAY AS ADMIT_TYPE
,ESDP.RESULT_VAL AS ESDP
,DISCH_DISPOSITION.DISPLAY AS DISCH_DISPOSITION
FROM ENCOUNTER E
-- JOIN DISCHARGE D ON (D.ENCNTR_ID = E.ENCNTR_ID)
-- AND D.ACTIVE_IND = 1
-- AND D.END_EFFECTIVE_DT_TM > SYSDATE
JOIN PERSON P ON (P.PERSON_ID = E.PERSON_ID)
JOIN CODE_VALUE ENC_TYPE ON (ENC_TYPE.CODE_VALUE = E.ENCNTR_TYPE_CLASS_CD)
JOIN ENCNTR_ALIAS FIN ON (FIN.ENCNTR_ID = E.ENCNTR_ID)
AND FIN.ENCNTR_ALIAS_TYPE_CD = 1077 -- FIN CODE
AND FIN.ACTIVE_IND = 1
AND FIN.ACTIVE_STATUS_CD = 188
JOIN ENCNTR_ALIAS MRN ON (MRN.ENCNTR_ID = E.ENCNTR_ID)
AND MRN.ENCNTR_ALIAS_TYPE_CD = 1079 -- MRN CODE
AND MRN.ACTIVE_IND = 1
AND MRN.ACTIVE_STATUS_CD = 188
JOIN CODE_VALUE FACILITY on (FACILITY.CODE_VALUE = E.LOC_FACILITY_CD)
JOIN CODE_VALUE NURSE_UNIT on (NURSE_UNIT.CODE_VALUE = E.LOC_NURSE_UNIT_CD)
JOIN CODE_VALUE ROOM on (ROOM.CODE_VALUE = E.LOC_ROOM_CD)
JOIN CODE_VALUE BED on (BED.CODE_VALUE = E.LOC_BED_CD)
JOIN CODE_VALUE DISCH_DISPOSITION on (DISCH_DISPOSITION.CODE_VALUE = E.DISCH_DISPOSITION_CD)
JOIN PRSNL ADMITDOC_NAME ON (ADMITDOC_NAME.PERSON_ID = OA.ORDER_PROVIDER_ID)
LEFT JOIN CLINICAL_EVENT HOSP_SUM ON (HOSP_SUM.ENCNTR_ID = E.ENCNTR_ID)
AND HOSP_SUM.EVENT_CD = :p17
AND HOSP_SUM.RESULT_STATUS_CD IN (:p19, :p20, :p21)
AND HOSP_SUM.RECORD_STATUS_CD = 188 -- ACTIVE
AND HOSP_SUM.VALID_UNTIL_DT_TM > cclsql_cnvtdatetimeutc(SYSDATE, 1, 126)
LEFT JOIN PRSNL DCDOC_NAME ON (DCDOC_NAME.PERSON_ID = HOSP_SUM.VERIFIED_PRSNL_ID)
JOIN CODE_VALUE ADMIT_SRC ON (ADMIT_SRC.CODE_VALUE = E.ADMIT_SRC_CD)
JOIN CODE_VALUE ADMIT_TYPE ON (ADMIT_TYPE.CODE_VALUE = E.ADMIT_TYPE_CD)
LEFT JOIN CLINICAL_EVENT ESDP ON (ESDP.ENCNTR_ID = E.ENCNTR_ID)
AND ESDP.EVENT_CD = :p18
AND ESDP.RESULT_STATUS_CD IN (:p19, :p20, :p21)
AND ESDP.RECORD_STATUS_CD = 188 -- ACTIVE
AND ESDP.VALID_UNTIL_DT_TM > cclsql_cnvtdatetimeutc(SYSDATE, 1, 126)
LEFT JOIN (
SELECT O.* FROM ORDERS O WHERE O.ORDER_ID = (
SELECT MAX(O2.ORDER_ID) FROM ORDERS O2 WHERE O2.ENCNTR_ID = E.ENCNTR_ID AND O2.CATALOG_CD = :p22 AND O2.ACTIVE_IND = 1
)) O ON
O.ENCNTR_ID = E.ENCNTR_ID
-- LEFT OUTER JOIN (
-- SELECT * FROM ORDER_ACTION WHERE ORDER_ID = O.ORDER_ID AND ACTION_TYPE_CD IN (:p23, :p24) AND ACTION_SEQUENCE = (
-- SELECT MAX(OA2.ACTION_SEQUENCE)
-- FROM ORDER_ACTION OA2
-- WHERE OA2.ORDER_ID = O.ORDER_ID AND OA2.ACTION_TYPE_CD IN (:p23, :p24)
-- )) OA ON
-- O.ORDER_ID = OA.ORDER_ID
WHERE E.ENCNTR_ID IN (:p0, :p1, :p2, :p3, :p4, :p5, :p6, :p7, :p8, :p9, :p10, :p11, :p12, :p13, :p14, :p15, :p16)
ORDER BY PERSON_ID ASC, REG_DT_TM DESC;

Answer 1

E.ENCNTR_ID on the third line below will not be found, because this subquery is outside the scope of the parent query, so you'll need to join your E table in this subquery. However, since you need the ENCTR_ID specificity in this subquery, you should consider using a CTE (WITH Clause) to prefetch this table.
LEFT JOIN (
SELECT O.* FROM ORDERS O WHERE O.ORDER_ID = (
SELECT MAX(O2.ORDER_ID) FROM ORDERS O2 WHERE O2.ENCNTR_ID = E.ENCNTR_ID AND
O2.CATALOG_CD = :p22 AND O2.ACTIVE_IND = 1
)) O ON
O.ENCNTR_ID = E.ENCNTR_ID

Answer 2

It seems the main thing I was lacking was using a GROUP BY in my subquery. I didn't need to use a derived table at all. Just use a subquery with GROUP BY and duplicate the qualifications in the main join query and the subquery.
SELECT
E.ENCNTR_ID
,E.REASON_FOR_VISIT
-- ,D.DIAGNOSIS_DISPLAY AS DISCHARGE_DX
-- ,D.DIAG_FTDESC AS WORKING_DX
,cclsql_cnvtdatetimeutc(E.REG_DT_TM, 2, 126) as reg_dt_tm
,cclsql_cnvtdatetimeutc(E.DISCH_DT_TM, 2, 126) as disch_dt_tm
,FACILITY.DISPLAY AS FACILITY
,P.PERSON_ID
,P.NAME_FULL_FORMATTED
,cclsql_cnvtdatetimeutc(P.BIRTH_DT_TM, 2, P.BIRTH_TZ) as birth_dt_tm
,MRN.ALIAS AS MRN
,FIN.ALIAS AS FIN
,ENC_TYPE.DISPLAY AS ENCOUNTER_TYPE
,NURSE_UNIT.DISPLAY AS NURSE_UNIT
,ROOM.DISPLAY AS ROOM
,BED.DISPLAY AS BED
-- ,ADMITDOC_NAME.NAME_FULL_FORMATTED AS ADMITDOC_NAME
,DCDOC_NAME.NAME_FULL_FORMATTED AS DCDOC_NAME
,ADMIT_SRC.DISPLAY AS ADMIT_SOURCE
,ADMIT_TYPE.DISPLAY AS ADMIT_TYPE
,ESDP.RESULT_VAL AS ESDP
,DISCH_DISPOSITION.DISPLAY AS DISCH_DISPOSITION
FROM ENCOUNTER E
-- JOIN DISCHARGE D ON (D.ENCNTR_ID = E.ENCNTR_ID)
-- AND D.ACTIVE_IND = 1
-- AND D.END_EFFECTIVE_DT_TM > SYSDATE
JOIN PERSON P ON (P.PERSON_ID = E.PERSON_ID)
JOIN CODE_VALUE ENC_TYPE ON (ENC_TYPE.CODE_VALUE = E.ENCNTR_TYPE_CLASS_CD)
JOIN ENCNTR_ALIAS FIN ON (FIN.ENCNTR_ID = E.ENCNTR_ID)
AND FIN.ENCNTR_ALIAS_TYPE_CD = 1077 -- FIN CODE
AND FIN.ACTIVE_IND = 1
AND FIN.ACTIVE_STATUS_CD = 188
JOIN ENCNTR_ALIAS MRN ON (MRN.ENCNTR_ID = E.ENCNTR_ID)
AND MRN.ENCNTR_ALIAS_TYPE_CD = 1079 -- MRN CODE
AND MRN.ACTIVE_IND = 1
AND MRN.ACTIVE_STATUS_CD = 188
JOIN CODE_VALUE FACILITY on (FACILITY.CODE_VALUE = E.LOC_FACILITY_CD)
JOIN CODE_VALUE NURSE_UNIT on (NURSE_UNIT.CODE_VALUE = E.LOC_NURSE_UNIT_CD)
JOIN CODE_VALUE ROOM on (ROOM.CODE_VALUE = E.LOC_ROOM_CD)
JOIN CODE_VALUE BED on (BED.CODE_VALUE = E.LOC_BED_CD)
JOIN CODE_VALUE DISCH_DISPOSITION on (DISCH_DISPOSITION.CODE_VALUE = E.DISCH_DISPOSITION_CD)
LEFT JOIN ORDERS O ON
O.ENCNTR_ID = E.ENCNTR_ID AND O.CATALOG_CD = :p22 AND O.ACTIVE_IND = 1 AND O.ORDER_ID IN (
SELECT MAX(O2.ORDER_ID) FROM ORDERS O2 WHERE O2.ENCNTR_ID = E.ENCNTR_ID AND O2.CATALOG_CD = :p22 AND O2.ACTIVE_IND = 1 GROUP BY O2.ENCNTR_ID
)
LEFT JOIN ORDER_ACTION OA ON
OA.ORDER_ID = O.ORDER_ID AND OA.ACTION_TYPE_CD IN (:p23, :p24) AND OA.ACTION_SEQUENCE IN (
SELECT MAX(OA2.ACTION_SEQUENCE) FROM ORDER_ACTION OA2 WHERE OA2.ORDER_ID = O.ORDER_ID AND OA2.ACTION_TYPE_CD IN (:p23, :p24) GROUP BY OA2.ORDER_ID
)
LEFT JOIN PRSNL ADMITDOC_NAME ON (ADMITDOC_NAME.PERSON_ID = OA.ORDER_PROVIDER_ID)
LEFT JOIN CLINICAL_EVENT HOSP_SUM ON (HOSP_SUM.ENCNTR_ID = E.ENCNTR_ID)
AND HOSP_SUM.EVENT_CD = :p17
AND HOSP_SUM.RESULT_STATUS_CD IN (:p19, :p20, :p21)
AND HOSP_SUM.RECORD_STATUS_CD = 188 -- ACTIVE
AND HOSP_SUM.VALID_UNTIL_DT_TM > cclsql_cnvtdatetimeutc(SYSDATE, 1, 126)
LEFT JOIN PRSNL DCDOC_NAME ON (DCDOC_NAME.PERSON_ID = HOSP_SUM.VERIFIED_PRSNL_ID)
JOIN CODE_VALUE ADMIT_SRC ON (ADMIT_SRC.CODE_VALUE = E.ADMIT_SRC_CD)
JOIN CODE_VALUE ADMIT_TYPE ON (ADMIT_TYPE.CODE_VALUE = E.ADMIT_TYPE_CD)
LEFT JOIN CLINICAL_EVENT ESDP ON (ESDP.ENCNTR_ID = E.ENCNTR_ID)
AND ESDP.EVENT_CD = :p18
AND ESDP.RESULT_STATUS_CD IN (:p19, :p20, :p21)
AND ESDP.RECORD_STATUS_CD = 188 -- ACTIVE
AND ESDP.VALID_UNTIL_DT_TM > cclsql_cnvtdatetimeutc(SYSDATE, 1, 126)
WHERE E.ENCNTR_ID IN (:p0, :p1, :p2, :p3, :p4, :p5, :p6, :p7, :p8, :p9, :p10, :p11, :p12, :p13, :p14, :p15, :p16)
ORDER BY PERSON_ID ASC, REG_DT_TM DESC