Left join ger inte nollvärdena i tabellen sql

Det finns några problem som jag har listat som följande

1. Du har använt detta som INNER JOIN enligt följande men ON villkoret består av kolumnen från en tabell:PAY_PAYROLL_ACTIONS vilket kommer att göra villkoret falskt om det inte finns några uppgifter om anställda i PAY_PAYROLL_ACTIONS bord.

   JOIN PAY_TIME_PERIODS PTP ON ( PPA.EARN_TIME_PERIOD_ID = PTP.TIME_PERIOD_ID )

2. Du har använt följande 5 WHERE-villkor.

   • PPA.ACTION_TYPE IS NULL
   • TO_CHAR(NVL(PPA.EFFECTIVE_DATE, '2019-09-01'), 'YYYY-MM-DD') BETWEEN ( '2019-09-01' ) AND ( '2019-12-01' )
   • PPA.CONSOLIDATION_SET_ID = PCS.CONSOLIDATION_SET_ID
   • NVL(PPA.EFFECTIVE_DATE, TRUNC(SYSDATE)) BETWEEN PAYREL.START_DATE AND PAYREL.END_DATE
   • NVL(PPA.EFFECTIVE_DATE, TRUNC(SYSDATE)) BETWEEN PAPD.START_DATE AND PAPD.END_DATE

Dessa villkor påverkar också det slutliga resultatet baserat på förekomsten av data i tabellen PAY_PAYROLL_ACTIONS .Jag försöker ge dig lösningen (se inline-kommentarer för en beskrivning av förändring) enligt min kunskap om dessa tabeller enligt följande:

SELECT DISTINCT
    PAPF.PERSON_NUMBER,
    NAME.FIRST_NAME,
    NAME.LAST_NAME,
    PAAM.ASSIGNMENT_NUMBER,
    PY.PAYROLL_NAME,
    (
        SELECT
            MEANING
        FROM
            FND_LOOKUP_VALUES
        WHERE
            LOOKUP_TYPE = 'ACTION_TYPE'
            AND LOOKUP_CODE = PPA.ACTION_TYPE
            AND LANGUAGE = 'US'
            AND ENABLED_FLAG = 'Y'
    ) ACTION_TYPE,
    TO_CHAR(PPA.EFFECTIVE_DATE, 'DD-MON-YYYY') EFFECTIVE_DATE,
    PPA.PAYROLL_ACTION_ID   ACTION_NUMBER,
    PCS.CONSOLIDATION_SET_NAME,
    TO_CHAR(FINC, 'DD-MON-YYYY') FINC,
    PASV.USER_STATUS
FROM
    PAY_ASSIGNED_PAYROLLS_DN PAPD
    JOIN PAY_PAYROLL_TERMS PT ON ( PAPD.PAYROLL_TERM_ID = PT.PAYROLL_TERM_ID )
    JOIN PAY_PAY_RELATIONSHIPS_DN PR ON ( PT.PAYROLL_RELATIONSHIP_ID = PR.PAYROLL_RELATIONSHIP_ID )
    JOIN PAY_ALL_PAYROLLS_F PY ON ( PAPD.PAYROLL_ID = PY.PAYROLL_ID )
    JOIN PER_ALL_PEOPLE_F PAPF ON ( PR.PERSON_ID = PAPF.PERSON_ID )
    JOIN PAY_CONSOLIDATION_SETS PCS ON ( PCS.CONSOLIDATION_SET_ID = PY.CONSOLIDATION_SET_ID )
    JOIN PER_PERSON_NAMES_F NAME ON ( PAPF.PERSON_ID = NAME.PERSON_ID )
    JOIN PAY_REL_GROUPS_DN PAYREL ON ( PAYREL.PARENT_REL_GROUP_ID = PAPD.PAYROLL_TERM_ID )
    JOIN PER_ALL_ASSIGNMENTS_M PAAM ON ( PAYREL.ASSIGNMENT_ID = PAAM.ASSIGNMENT_ID )
    JOIN PAY_PAYROLL_REL_ACTIONS PPRA ON ( PPRA.PAYROLL_RELATIONSHIP_ID = PR.PAYROLL_RELATIONSHIP_ID )
    JOIN PER_ASSIGNMENT_STATUS_TYPES_VL PASV ON ( PASV.ASSIGNMENT_STATUS_TYPE_ID = PAAM.ASSIGNMENT_STATUS_TYPE_ID )
    JOIN PER_LEGISLATIVE_DATA_GROUPS_VL LDG ON ( LDG.LEGISLATION_CODE = PAAM.LEGISLATION_CODE )
    LEFT JOIN PAY_PAYROLL_ACTIONS PPA ON ( PPA.PAYROLL_ID = PY.PAYROLL_ID
                                           AND PPA.PAYROLL_ACTION_ID = PPRA.PAYROLL_ACTION_ID 
                                           -- TEJASH : SUGGESTION-1 : ADDED FOLLOWING CONDITIONS IN JOIN CONDITIONS INSTEAD OF WHERE CLAUSE
                                           AND PPA.ACTION_TYPE IS NULL
                                           -- CHANGED FOLLOWING CONDITION TO USE DATES RATHER THAN CHAR
                                           AND NVL(PPA.EFFECTIVE_DATE, DATE '2019-09-01') BETWEEN DATE '2019-09-01' AND DATE '2019-12-01'
                                           AND PPA.CONSOLIDATION_SET_ID = PCS.CONSOLIDATION_SET_ID
                                           AND NVL(PPA.EFFECTIVE_DATE, TRUNC(SYSDATE)) BETWEEN PAYREL.START_DATE AND PAYREL.END_DATE
                                           AND NVL(PPA.EFFECTIVE_DATE, TRUNC(SYSDATE)) BETWEEN PAPD.START_DATE AND PAPD.END_DATE )
    -- TEJASH : SUGGESTION-2 : USE LEFT JOIN HERE
    LEFT JOIN PAY_TIME_PERIODS PTP ON ( PPA.EARN_TIME_PERIOD_ID = PTP.TIME_PERIOD_ID )
WHERE
    1 = 1
    AND PTP.PAYROLL_ID = PY.PAYROLL_ID
    AND PAAM.ASSIGNMENT_TYPE = 'E' 
       --ADDED condition---    
    AND PASV.USER_STATUS LIKE '%Payroll Eligible'
    AND ( FINC > PTP.START_DATE
          OR FINC IS NULL )
-- COMMENTED BY TEJASH
--    AND ( PPA.ACTION_TYPE IS NULL 
--              OR ppa.action_type IN ( 'Q', 'R' )
--     ) 
       --  AND ldg.name = Nvl(:P_LEGISLATIVE_GROUP, ldg.name)  
       --AND pasv.user_status = Nvl(:P_ASSIGNMENT_STATUS,  
       --                     pasv.user_status)  
    -- COMMENTED BY TEJASH
    --AND TO_CHAR(NVL(PPA.EFFECTIVE_DATE, '2019-09-01'), 'YYYY-MM-DD') BETWEEN ( '2019-09-01' ) AND ( '2019-12-01' ) 
       -------    
    --AND PPA.CONSOLIDATION_SET_ID = PCS.CONSOLIDATION_SET_ID
    AND PAYREL.GROUP_TYPE = 'A'
    AND NAME.NAME_TYPE = 'GLOBAL'
    --AND NVL(PPA.EFFECTIVE_DATE, TRUNC(SYSDATE)) BETWEEN PAYREL.START_DATE AND PAYREL.END_DATE
    --AND NVL(PPA.EFFECTIVE_DATE, TRUNC(SYSDATE)) BETWEEN PAPD.START_DATE AND PAPD.END_DATE
    AND TRUNC(SYSDATE) BETWEEN PAPF.EFFECTIVE_START_DATE AND PAPF.EFFECTIVE_END_DATE
    AND TRUNC(SYSDATE) BETWEEN PY.EFFECTIVE_START_DATE AND PY.EFFECTIVE_END_DATE
    AND TRUNC(SYSDATE) BETWEEN PAAM.EFFECTIVE_START_DATE AND PAAM.EFFECTIVE_END_DATE
    AND TRUNC(SYSDATE) BETWEEN NAME.EFFECTIVE_START_DATE AND NAME.EFFECTIVE_END_DATE

Skål!!