RANK: a list of results could use the RANK function and show values of 1, 2, 2, 4, and 5. The number 3 is skipped because the rank of 2 is tied. DENSE_RANK: a list of results could use the DENSE_RANK function and show values of 1, 2, 2, 3, and 4. The number 3 is sti...
importorg.apache.spark.sql.SparkSessionvalspark=SparkSession.builder().appName("RankWindowFunctionExample").getOrCreate()valsalesData=spark.read.format("csv").option("header","true").option("inferSchema","true").load("sales_data.csv") 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 接下来...
For example, if the three top salespeople have the same SalesYTD value, they are all ranked one. The salesperson with the next highest SalesYTD is ranked number four, because there are three rows that are ranked higher. Therefore, the RANK function does not always return consecutive integers....
Rank排名(不分组) 计算薪资范围在[39200,39220]的薪资排名(数据量比较小,且包含重复值) 普通排名,不考虑值重复 使用一个@rank变量来递增排名值 1 2 3 4 5 select s.salary, @rank:=@rank+1 as rk from salaries s,(select @rank:=0) r where s.salary between 39200 and 39220 order by s.salary ...
The following example returns the top ten employees ranked by their salary. Because a PARTITION BY clause was not specified, the RANK function was applied to all rows in the result set.SQL نسخ USE AdventureWorks2022 SELECT TOP(10) BusinessEntityID, Rate, RANK() OVER (ORDER BY ...
The following example shows the four ranking functions used in the same query. For function-specific examples, see each ranking function. SQLCopy USEAdventureWorks2022; GOSELECTp.FirstName, p.LastName ,ROW_NUMBER()OVER(ORDERBYa.PostalCode)AS"Row Number",RANK()OVER(ORDERBYa.PostalCode)ASRank,DE...
For example, if the two top salespeople have the same SalesYTD value, they are both ranked one. The salesperson with the next highest SalesYTD is ranked number three, because there are two rows that are ranked higher. Therefore, the RANK function does not always return consecutive integers. ...
RANK()The RANK function instead of assigning a sequential number to each row as in the case of the ROW_NUMBER function, it assigns rank to each record starting with 1. If it encounters two or more records to have the same ORDER BY <columns> values, it is said to be a tie and all...
each tied rows receives the same rank. For example, if the two top salespeople have the sameSalesYTDvalue, they are both ranked one. The salesperson with the next highestSalesYTDis ranked number three, because there are two rows that are ranked higher. Therefore, the RANK function does not...
_RANK function does not count the duplicate rows. For example, both the RANK and DENSE_RANK functions assign a rank of 1 to the first two rows, but the RANK function assigns a rank of 3 to the third row - as it is the third row - while the DENSE_RANK function assigns a r...