(4)合并结果: selectename,deptno,sal, rank() over(partition by deptno order by sal desc)"RANK", dense_rank() over(partition by deptno order by sal desc)"dense_rank", row_number() over(partition by deptno order by sa
primarykey(deptno); 先看一下row_number() /rank()/dense_rank()三个函数之间的区别 selectemp.deptno,emp.sal,emp.empno,row_number()over(partitionbydeptnoorderbysaldesc) row_number,--1,2,3 rank()over(partitionbydeptnoorderbysaldesc) rank,--1,1,3 dense_rank()over(partitionbydeptnoorderbysa...
Example 把scott.emp表按照“deptno”分区,分区内再按“sal”排位。 先看看RANK的情况。 代码语言:javascript 代码运行次数:0 运行 AI代码解释 SQL> conn scott/triger; 接続されました。 SQL> col ENAME for a30 SQL> set lin 120 pages 999 SQL> SELECT deptno, ename, sal, RANK() OVER (PARTITION BY...
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SELECT salesman_id, year, sales, ROUND(PERCENT_RANK() OVER ( PARTITION BY year ORDER BY sales DESC ) * 100,2) || '%' percent_rank FROM salesman_performance WHERE year in (2016,2017); Code language: SQL (Structured Query Language) (sql) The output is: In this example: The PARTITION...
rank() over(partition by dbid, instance_number, sample_time order by c desc) r from (select /*+ parallel 8 */ t.*, count(*) over(partition by dbid, instance_number, sample_time, event) c, row_number() over(partition by dbid, instance_number, sample_time, event order by 1) r1...
初学PL/SQL。 在oracle中,使用RANK,DENSE_RANK和ROW_NUMBER这3个分析函数都可以进行对记录的编号,在处理记录排名方面可以考虑使用以上三种方法之一。 RANK:通过对order by 后的条件,对每一行进行编号,当比较字段相等时,两行拥有相同的编号,接下来的下一条记录进行跳号。
listagg(city,',') within GROUP (order by city) over (partition by nation) rank from temp 运行结果 Oracle Database SQL Language Reference上有关listagg()函数的描述如下: Purpose For a specified measure, LISTAGG orders data within each group specified in the ORDER BY clause and then concatenates...
list_price,DENSE_RANK()OVER(ORDERBYlist_price ) my_rankFROMproducts )SELECT*FROMcte_productsWHEREmy_rank <=10;Code language:SQL (Structured Query Language)(sql) Here is the output: Oracle DENSE_RANK() function with PARTITION BY clause example# ...
OVER,RANK,LEAD, orLOG. MIN,MAX. UNION,MINUS,INTERSECT. HAVING. TriggerSSMA creates triggers based on the following rules: BEFOREtriggers are converted toINSTEAD OFtriggers. AFTERtriggers are converted toAFTERtriggers. INSTEAD OFtriggers are converted toINSTEAD OFtriggers. MultipleINSTEAD OFtrigger...