Getting the Last 100 Records

Dear all.
I have a Table with 4 million reocords,
Is there any way to view only the last 400 commands. Is there a command in oracle that gets the first 400 or last 400 records
Kindly Suggest

OK. Something like this will give you the last 400 from the most recent date(s).
select *
from
   select col1
         ,col2
         ,col3
         ,row_number() over (order by date_loaded desc) rn
   from   your_table
where rn <= 400;

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    Tussen_ticketid NUMBER;
    Ticketid_Place2 NUMBER;
    Ticketid_Place3 NUMBER;
    Ticketid_Place4 NUMBER;
    Ticketid_Place5 NUMBER;
    Ticketid_Place1 NUMBER;
    TestVeld VARCHAR2(2000);
    Query_to_use VARCHAR2(4000) := ' SELECT ticketid, applicatiecd, '||
    ' categorieid, titel, klantprioriteitid, interneprioriteitid, gebruikerid, statusid,'||
    ' versieid FROM ticket WHERE ticketid =';
    Start_Rec_ticketid NUMBER;
    TestVeldFoundThatIsCorrect NUMBER; is NULL; BOOLEAN := FALSE;
    BEGIN
    -- TestVeldFoundThatIsCorrect := FALSE;
         SELECT Max(Ticketid) INTO Mrecent_ticket FROM Ticket ;
         Tussen_ticketid := Mrecent_ticket;
         -- of dit echt nodig is weet ik zo niet
         -- kan eventueel opgevangen worden in de hoofd loop
         -- TestVeldFoundThatIsCorrect := FALSE;
         -- mischien checken op datum die ingevuld is, die moet ingevuld zijn wil het ok zijn
         LOOP From top to bottom  Till TEstVeldFOUNDTHATISCORRECT is TRUE
         WHILE TestVeldFoundThatIsCorrect != 9999999 LOOP
                   SELECT titel INTO TestVeld FROM ticket WHERE ticketid =
                   Tussen_ticketid;
              IF TestVeld is NULL THEN
                   Tussen_ticketid := Tussen_ticketid - 1;
                   TestVeld := NULL;
              ELSE
                   TestVeldFoundThatIsCorrect := 9999999;
                   Start_rec_ticketid := Tussen_ticketid;
                   --Stop loop
              END IF;
         END LOOP;
         IF TestVeldFoundThatIsCorrect = 9999999 THEN
              Tussen_ticketid := Start_rec_ticketid;
              -- standaard is het onderstaande, bovenstaande gebeurt alleen als de bovenstaande loop
              -- gebruikt is
         ELSE
              Tussen_ticketid := Mrecent_ticket;
         END IF;
         -- mischien moet er nog een count gebeuren die kijkt hoeveel tickets er zijn in een bepaalde --
         -- periode en afhankelijk daarvan, tussen wanneer en wanneer een andere flag zetten
         --LOOP TELLER BETWEEN 1 AND  6
         While teller <= 5 LOOP
              SELECT titel INTO TestVeld FROM ticket WHERE ticketid = Tussen_ticketid;
              --Veld_dat_ingevuld_moet_zijn INTO  TestVeld FROM ticket WHERE ticketid = Tussen_ticketid;
              -- dit zou het datumveld moeten zijn
              IF TestVeld is NOT NULL THEN
                   -- dan is dat record ok voor gebruik
                   -- wel nog nakijken welke veld dat moet zijn, moet altijd ingevuld zijn
                   -- waarde doet er niet toe
                   --Query_to_use := Query_to_use || ' UNION SELECT ticketid, applicatiecd, '||
                   --' categorieid, titel, klantprioriteitid, interneprioriteitid, gebruikerid, statusid,'||
                   --' versieid FROM ticket WHERE ticketid = ';
                   IF Teller = 1 THEN
    Ticketid_place1 := Tussen_ticketid;
    Query_to_use := Query_to_use || 'Ticketid_place1';
                   ELSIF Teller = 2 THEN
    Ticketid_place2 := Tussen_ticketid;
    Query_to_use := 'UNION'||Query_to_use || 'Ticketid_place2';
                   ELSIF Teller = 3 THEN
    Ticketid_place3 := Tussen_ticketid;
    Query_to_use := 'UNION'||Query_to_use || 'Ticketid_place3';
                   ELSIF Teller = 4 THEN
    Ticketid_place4 := Tussen_ticketid;
    Query_to_use :='UNION'|| Query_to_use || 'Ticketid_place4';
                   ELSIF Teller = 5 THEN
    Ticketid_place5 := Tussen_ticketid;
    Query_to_use :='UNION'|| Query_to_use || 'Ticketid_place5';
                   ELSIF Teller = 6 THEN
                        Teller := Teller + 1;
                   END IF;
                   Teller := Teller + 1;
                   Tussen_ticketid := Tussen_ticketid - 1;
              ELSIF
                   Tussen_ticketid := Tussen_ticketid - 1;
              END IF;
         END LOOP;
         -- dbms_output.Put_line(Query_to_use);
         RETURN Query_to_use;
    END;

    DECLARE
    Mrecent_ticket NUMBER;
    Tussen_ticketid NUMBER;
    Ticketid_Place2 NUMBER;
    Ticketid_Place3 NUMBER;
    Ticketid_Place4 NUMBER;
    Ticketid_Place5 NUMBER;
    Ticketid_Place1 NUMBER;
    TestVeld VARCHAR2(2000);
    Query_to_use VARCHAR2(4000) := ' SELECT ticketid,
    applicatiecd, '||
    ' categorieid, titel, klantprioriteitid,
    interneprioriteitid, gebruikerid, statusid,'||
    ' versieid FROM ticket WHERE ticketid =';
    Start_Rec_ticketid NUMBER;
    TestVeldFoundThatIsCorrect NUMBER; --is NULL;
    --BOOLEAN := FALSE;
    EGIN
    -- TestVeldFoundThatIsCorrect := FALSE;
    Max(Ticketid) INTO Mrecent_ticket FROM Ticket ;
    ussen_ticketid := Mrecent_ticket;
         -- of dit echt nodig is weet ik zo niet
         -- kan eventueel opgevangen worden in de hoofd loop
         -- TestVeldFoundThatIsCorrect := FALSE;
    -- mischien checken op datum die ingevuld is, die
    e moet ingevuld zijn wil het ok zijn
    LOOP From top to bottom  Till
    l TEstVeldFOUNDTHATISCORRECT is TRUE
         WHILE TestVeldFoundThatIsCorrect != 9999999 LOOP
    SELECT titel INTO TestVeld FROM ticket WHERE
    ERE ticketid =
                   Tussen_ticketid;
              IF TestVeld is NULL THEN
                   Tussen_ticketid := Tussen_ticketid - 1;
                   TestVeld := NULL;
              ELSE
                   TestVeldFoundThatIsCorrect := 9999999;
                   Start_rec_ticketid := Tussen_ticketid;
                   --Stop loop
              END IF;
         END LOOP;
         IF TestVeldFoundThatIsCorrect = 9999999 THEN
              Tussen_ticketid := Start_rec_ticketid;
    -- standaard is het onderstaande, bovenstaande
    de gebeurt alleen als de bovenstaande loop
              -- gebruikt is
         ELSE
              Tussen_ticketid := Mrecent_ticket;
         END IF;
    -- mischien moet er nog een count gebeuren die kijkt
    t hoeveel tickets er zijn in een bepaalde --
    -- periode en afhankelijk daarvan, tussen wanneer en
    n wanneer een andere flag zetten
         --LOOP TELLER BETWEEN 1 AND  6
         While teller <= 5 LOOP
    SELECT titel INTO TestVeld FROM ticket WHERE
    RE ticketid = Tussen_ticketid;
    --Veld_dat_ingevuld_moet_zijn INTO  TestVeld FROM
    OM ticket WHERE ticketid = Tussen_ticketid;
              -- dit zou het datumveld moeten zijn
              IF TestVeld is NOT NULL THEN
                   -- dan is dat record ok voor gebruik
    -- wel nog nakijken welke veld dat moet zijn, moet
    oet altijd ingevuld zijn
                   -- waarde doet er niet toe
    --Query_to_use := Query_to_use || ' UNION SELECT
    ECT ticketid, applicatiecd, '||
    --' categorieid, titel, klantprioriteitid,
    id, interneprioriteitid, gebruikerid, statusid,'||
                   --' versieid FROM ticket WHERE ticketid = ';
                   IF Teller = 1 THEN
    Ticketid_place1 :=
    Tussen_ticketid;
    Query_to_use :=
    Query_to_use || 'Ticketid_place1';
                   ELSIF Teller = 2 THEN
    Ticketid_place2 :=
    Tussen_ticketid;
    Query_to_use :=
    'UNION'||Query_to_use || 'Ticketid_place2';
                   ELSIF Teller = 3 THEN
    Ticketid_place3 :=
    Tussen_ticketid;
    Query_to_use :=
    'UNION'||Query_to_use || 'Ticketid_place3';
                   ELSIF Teller = 4 THEN
    Ticketid_place4 :=
    Tussen_ticketid;
    Query_to_use :='UNION'||
    Query_to_use || 'Ticketid_place4';
                   ELSIF Teller = 5 THEN
    Ticketid_place5 :=
    Tussen_ticketid;
    Query_to_use :='UNION'||
    Query_to_use || 'Ticketid_place5';
                   ELSIF Teller = 6 THEN
                        Teller := Teller + 1;
                   END IF;
                   Teller := Teller + 1;
                   Tussen_ticketid := Tussen_ticketid - 1;
              ELSIF
                   Tussen_ticketid := Tussen_ticketid - 1;
              END IF;
         END LOOP;
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         RETURN Query_to_use;
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