RANK FUNCTION IN ORACLE 8I

Question

제품 : PL/SQL
작성날짜 : 2001-09-11
RANK FUNCTION IN ORACLE 8I
==========================
EXPLANATION
oracle 8i(8.1.6) 부터 가능한 rank function 입니다.
8.1.5 에서는 ora-923 error 가 납니다.
plsql 내에서는 oracle 9i 부터 가능합니다.
8.1.6에서는 ora-900 error가 납니다.
EXAMPLE
<RANK() OVER ( query_partition_clause ORDER_BY clause) >
- 중복 rank 값만큼 다음 순위는 생략
SQL>SELECT deptno, ename, sal, comm,
RANK() OVER (PARTITION BY deptno ORDER BY sal DESC, comm) as rk
FROM emp;
DEPTNO ENAME SAL RK
10 KING 5000 1
10 CLARK 2450 2
10 MILLER 1300 3
20 3500 1
20 SCOTT 3000 2
20 FORD 3000 2
20 JONES 2975 4
20 ADAMS 1100 5
20 SMITH 800 6
30 BLAKE 2850 1
30 ALLEN 1600 2
30 TURNER 1500 3
30 WARD 1250 4
30 MARTIN 1250 5
40 JAMES 777 1
9 1
<DENSE_RANK( ) OVER ( query_partition_clause ORDER_BY clause ) >
- 중복 rank 의 수와 무관하게 numbering
SQL>SELECT dname, ename, sal, DENSE_RANK()
OVER (PARTITION BY dname ORDER BY sal) as drank
FROM emp, dept
WHERE emp.deptno = dept.deptno
AND dname IN ('SALES', 'RESEARCH');
DNAME ENAME SAL DRANK
RESEARCH SMITH 800 1
RESEARCH ADAMS 1100 2
RESEARCH JONES 2975 3
RESEARCH SCOTT 3000 4
RESEARCH FORD 3000 4
RESEARCH 3500 5
SALES WARD 1250 1
SALES MARTIN 1250 1
SALES TURNER 1500 2
SALES ALLEN 1600 3
SALES BLAKE 2850 4
plsql 내에서 사용 가능 :oracle 9i 부터
SQL> create table
rank_emp(deptno number(2), ename varchar2(20), sal number(5), rk number(2));
테이블이 생성되었습니다.
SQL> create or replace procedure window_plsql AS
query_str VArchar2(1000);
begin
query_str := 'insert into rank_emp
SELECT deptno, ename, sal,
RANK() OVER (PARTITION BY deptno ORDER BY sal DESC, comm) as rk
FROM emp' ;
Execute Immediate query_str;
end;
2 /
프로시저가 생성되었습니다.
SQL> exec window_plsql
PL/SQL 처리가 정상적으로 완료되었습니다.
SQL> select * from rank_emp;
DEPTNO ENAME SAL RK
10 KING 5000 1
10 CLARK 2450 2
10 MILLER 1300 3
20 SCOTT 3000 1
20 FORD 3000 1
20 JONES 2975 3
20 ADAMS 1100 4
20 SMITH 800 5
30 BLAKE 2850 1
30 ALLEN 1600 2
30 TURNER 1500 3
DEPTNO ENAME SAL RK
30 WARD 1250 4
30 MARTIN 1250 5
30 JAMES 950 6
14 개의 행이 선택되었습니다.

Answer 1

That's correct
The differences between Standard and Enterprise Edition are listed here:
http://www.oracle.com/technology/products/oracle8i/pdf/8i_fam.pdf