last_value over range : First Last Value « Analytical Functions « Oracle PL / SQL

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Oracle PL / SQL » Analytical Functions » First Last Value 
last_value over range
 
SQL>
SQL>
SQL> create table employee(
  2           emp_no                 integer         primary key
  3          ,lastname               varchar2(20)    not null
  4          ,firstname              varchar2(15)    not null
  5          ,midinit                varchar2(1)
  6          ,street                 varchar2(30)
  7          ,city                   varchar2(20)
  8          ,state                  varchar2(2)
  9          ,zip                    varchar2(5)
 10          ,zip_4                  varchar2(4)
 11          ,area_code              varchar2(3)
 12          ,phone                  varchar2(8)
 13          ,salary                 number(3)
 14          ,birthdate              date
 15          ,hiredate               date
 16          ,title                  varchar2(20)
 17          ,dept_no                integer
 18          ,mgr                    integer
 19          ,region                 number
 20          ,division               number
 21          ,total_sales            number
 22  );

Table created.

SQL> insert into employee(emp_no, lastname, firstname, midinit, street, city, state, zip,zip_4, area_code, phone, salary, birthdate, hiredate,title, dept_no, mgr, region, division, total_sales)
  2               values (1,'Anderson','Nancy','N','33 Ave','London','NY','11111','1111','212','234-1111',3.75,'21-mar-1927','1-feb-1947','Sales Manager',2,null,100,10,40000);

row created.

SQL> insert into employee(emp_no, lastname, firstname, midinit, street, city, state, zip,zip_4, area_code, phone, salary, birthdate, hiredate,title, dept_no, mgr, region, division, total_sales)
  2               values (2,'Last','First','F','12 Ave','Paris','CA','22222','2222','221','867-2222',7.75,'14-feb-1976','15-mar-1985','Sales Clerk',2,1,100,10,10000);

row created.

SQL> insert into employee(emp_no, lastname, firstname, midinit, street, city, state, zip,zip_4, area_code, phone, salary, birthdate, hiredate,title, dept_no, mgr, region, division, total_sales)
  2               values (3,'Wash','Georgia','G','Street14','Barton','NJ','33333','3333','214','340-3333',11.50,'2-jul-1977','21-apr-2004','Designer',1,2,100,10,40000);

row created.

SQL> insert into employee(emp_no, lastname, firstname, midinit, street, city, state, zip,zip_4, area_code, phone, salary, birthdate, hiredate,title, dept_no, mgr, region, division, total_sales)
  2               values (4,'Bush','Dave','D','56 Street','Island','RI','44444','4444','215','777-4444',21.65,'15-may-1945','2-aug-1975','Designer',1,2,100,10,40000);

row created.

SQL> insert into employee(emp_no, lastname, firstname, midinit, street, city, state, zip,zip_4, area_code, phone, salary, birthdate, hiredate,title, dept_no, mgr, region, division, total_sales)
  2               values (5,'Will','Robin','W','56 Street','Island','MA','55555','5555','216','777-5555',24.65,'10-dec-1980','2-aug-2007','Designer',1,5,100,10,40000);

row created.

SQL> insert into employee(emp_no, lastname, firstname, midinit, street, city, state, zip,zip_4, area_code, phone, salary, birthdate, hiredate,title, dept_no, mgr, region, division, total_sales)
  2               values (6,'Pete','Mona','M','13 Ave','York','MO','66666','6666','217','111-6666',9,'14-feb-1966','15-mar-1985','Sales Clerk',2,5,100,10,40000);

row created.

SQL> insert into employee(emp_no, lastname, firstname, midinit, street, city, state, zip,zip_4, area_code, phone, salary, birthdate, hiredate,title, dept_no, mgr, region, division, total_sales)
  2               values (7,'Roke','John','J','67 Ave','New York','BC','77777','7777','218','122-7777',10.00,'14-jun-1955','15-mar-1975','Accountant',3,2,100,10,40000);

row created.

SQL> insert into employee(emp_no, lastname, firstname, midinit, street, city, state, zip,zip_4, area_code, phone, salary, birthdate, hiredate,title, dept_no, mgr, region, division, total_sales)
  2               values (8,'Horry','Tedi','T','1236 Lane','Newton','NY','88888','8888','219','222-8888',13.00,'10-jun-1955','15-aug-1985','Sales Representative',3,2,100,10,50000);

row created.

SQL> insert into employee(emp_no, lastname, firstname, midinit, street, city, state, zip,zip_4, area_code, phone, salary, birthdate, hiredate,title, dept_no, mgr, region, division, total_sales)
  2                values (9,'Bar','Candi','C','400 East Street','Yorken','NY','99999','9999','220','321-9999',12.00,'10-oct-1933','15-jan-1969','Sales Representative',3,5,100,10,35000);

row created.

SQL>
SQL> select from employee;
    EMP_NO LASTNAME             FIRSTNAME       M STREET                         CITY                 ST ZIP   ZIP_ ARE PHONE        SALARY
---------- -------------------- --------------- - ------------------------------ -------------------- -- ----- ---- --- -------- ----------
BIRTHDATE            HIREDATE             TITLE                   DEPT_NO        MGR     REGION   DIVISION TOTAL_SALES
-------------------- -------------------- -------------------- ---------- ---------- ---------- ---------- -----------
         Anderson             Nancy           N 33 Ave                         London               NY 11111 1111 212 234-1111          4
21-MAR-1927 00:00:00 01-FEB-1947 00:00:00 Sales Manager                 2                   100      10  40000

         Last                 First           F 12 Ave                         Paris                CA 22222 2222 221 867-2222          8
14-FEB-1976 00:00:00 15-MAR-1985 00:00:00 Sales Clerk                   2          1        100      10  10000

         Wash                 Georgia         G Street14                     Barton               NJ 33333 3333 214 340-3333         12
02-JUL-1977 00:00:00 21-APR-2004 00:00:00 Designer                      1          2        100      10  40000

         Bush                 Dave            D 56 Street                      Island               RI 44444 4444 215 777-4444         22
15-MAY-1945 00:00:00 02-AUG-1975 00:00:00 Designer                      1          2        100      10  40000

         Will                 Robin           W 56 Street                      Island               MA 55555 5555 216 777-5555         25
10-DEC-1980 00:00:00 02-AUG-2007 00:00:00 Designer                      1          5        100      10  40000

         Pete                 Mona            M 13 Ave                         York                 MO 66666 6666 217 111-6666          9
14-FEB-1966 00:00:00 15-MAR-1985 00:00:00 Sales Clerk                   2          5        100      10  40000

         Roke                 John            J 67 Ave                         New York             BC 77777 7777 218 122-7777         10
14-JUN-1955 00:00:00 15-MAR-1975 00:00:00 Accountant                    3          2        100      10  40000

         Horry                Tedi            T 1236 Lane                      Newton               NY 88888 8888 219 222-8888         13
10-JUN-1955 00:00:00 15-AUG-1985 00:00:00 Sales Representative          3          2        100      10  50000

         Bar                  Candi           C 400 East Street                Yorken               NY 99999 9999 220 321-9999         12
10-OCT-1933 00:00:00 15-JAN-1969 00:00:00 Sales Representative          3          5        100      10  35000


rows selected.

SQL>
SQL> select lastname , hiredate, salary,
  2   avg(salaryover (order by hiredate
  3                     range interval '6' month preceding avg_sal,
  4   first_value(lastnameover (order by hiredate
  5                     range interval '6' month preceding win_start,
  6   last_value(lastnameover (order by hiredate
  7                     range interval '6' month preceding win_end,
  8   first_value(salaryover (order by hiredate
  9                     range interval '6' month preceding win_start2,
 10   last_value(salaryover (order by hiredate
 11                     range interval '6' month preceding win_end2,
 12   count(*over (order by hiredate
 13                     range interval '6' month preceding win_cnt
 14  from employee
 15  order by hiredate
 16  /
LASTNAME             HIREDATE                 SALARY    AVG_SAL WIN_START            WIN_END           WIN_START2   WIN_END2    WIN_CNT
-------------------- -------------------- ---------- ---------- -------------------- -------------------- ---------- ---------- ----------
Anderson             01-FEB-1947 00:00:00          4          4 Anderson             Anderson              4          4          1
Bar                  15-JAN-1969 00:00:00         12         12 Bar                  Bar                  12         12          1
Roke                 15-MAR-1975 00:00:00         10         10 Roke                 Roke                 10         10          1
Bush                 02-AUG-1975 00:00:00         22         16 Roke                 Bush                 10         22          2
Last                 15-MAR-1985 00:00:00          8        8.5 Last                 Pete                  8          9          2
Pete                 15-MAR-1985 00:00:00          9        8.5 Last                 Pete                  8          9          2
Horry                15-AUG-1985 00:00:00         13         10 Last                 Horry                 8         13          3
Wash                 21-APR-2004 00:00:00         12         12 Wash                 Wash                 12         12          1
Will                 02-AUG-2007 00:00:00         25         25 Will                 Will                 25         25          1

rows selected.

SQL>
SQL>
SQL> drop table employee;

Table dropped.

SQL>
SQL> --

 
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1. FIRST_VALUE and LAST_VALUE: which rows are used in the calculation of the window function for each row
2. first_value over partition
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4. LAST_VALUE(): get the last rows in a window
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6. last_value over range between
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