Лявото присъединяване не дава нулевите стойности в таблицата sql

Има няколко проблема, които съм посочил по-долу

1. Използвали сте това като INNER JOIN както следва, но ON условие се състои от колона от таблица:PAY_PAYROLL_ACTIONS което ще направи условието невярно, ако няма данни за служител в PAY_PAYROLL_ACTIONS таблица.

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

2. Използвали сте следните 5 условия WHERE.

   • 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

Тези условия също влияят върху крайния резултат въз основа на наличието на данните в таблицата PAY_PAYROLL_ACTIONS .Опитвам се да ви дам решението (вижте вградените коментари за описание на промяната) според познанията ми за тези таблици, както следва:

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

Наздраве!!