PERCENTILE_CONT和PERCENTILE_DISC都是为了计算百分位的数值,比如计算在某个百分位时某个栏位的数值是多少。他们的区别就是前者是连续型,后者是离散型。CONT代表continuous,DISC代表discrete。PERCENTILE_CONT是连续型意味它考虑的是区间,所以值是绝对的中间值。而PERCENTILE_DISC是离散型,所以它更多考虑向上或者向下取舍,...
CONT是continuous连续的意思,就是经过连续分布后的百分位数。 SELECT [class] ,[student] ,[subject_name] ,[score] ,PERCENTILE_CONT(0.5) WITHIN GROUP (ORDER BY [score]) OVER (PARTITION BY [student]) AS MedianCont ,PERCENTILE_DISC(0.5) WITHIN GROUP (ORDER BY [score]) OVER (PARTITION BY [...
下列範例會使用PERCENTILE_CONT和PERCENTILE_DISC來尋找每個部門的員工工資中位數。 這些函式可能不會傳回相同的值。PERCENTILE_CONT插入可能或可能不存在於數據集中的適當值,同時PERCENTILE_DISC一律會從集合傳回實際值。 SQL SELECTDISTINCTDepartmentName,PERCENTILE_CONT(0.5)WITHINGROUP(ORDERBYBaseRate)OVER(PAR...
这是因为,PERCENTILE_CONT 内插适当的值,而无论它在数据集中是否存在,而 PERCENTILE_DISC 始终从数据集中返回实际值。复制 USE AdventureWorks2012; SELECT DISTINCT Name AS DepartmentName ,PERCENTILE_CONT(0.5) WITHIN GROUP (ORDER BY ph.Rate) OVER (PARTITION BY Name) AS MedianCont ,PERCENTILE_DISC(0.5...
PERCENTILE_DISC and PERCENTILE_CONT Both functions calculate a percentile based on the discrete and the continuous distribution correspondingly. The main difference between the two functions is thatPERCENTILE_DISCwill return a value from the data set whilePERCENTILE_CONTwill interpolate values. ...
DepartmentName MedianCont MedianDisc Document Control 16.8269 16.8269 Engineering 34.375 32.6923 Executive 54.32695 48.5577 Human Resources 17.427850 16.5865 示例:Azure Synapse Analytics 和 Analytics Platform System (PDW) 基本语法示例 下面的示例使用 PERCENTILE_CONT 和 PERCENTILE_DISC 函数查找每个部门的员工薪金...
PERCENTILE_CONT是一种SQL函数,用于从给定的数值列中计算指定百分位数的值。它可以用于检索中位数或其他百分位数。 在使用PERCENTILE_CONT函数时,需要指定两个参数:百分位数和排序的数值列。百分位数是一个0到1之间的小数,表示要计算的位置。排序的数值列是一个包含数值的列,用于计算百分位数。 PERCENTILE_CONT函数...
percentile_approx 聚合函数 percentile_cont 聚合函数 percentile_disc 聚合函数 %(百分号)运算符 pi 函数 ||(双管道符号)运算符 |(管道符号)运算符 +(加号)运算符 +(加号)一元运算符 pmod 函数 posexplode 表值生成器函数 posexplode_outer 表值生成器函数 position 函数 positive 函数 pow 函数 power 函数 prin...
percentile_cont, and percentile_disc. percentile_conf is supprted by major RDBMS as belows. Oracle 9i IBM Db2 11.1 MS SQL Server 2012 PostgreSQL 9.4 MariaDB 10.3.3 Firebird and MySQL are not supported that function.How to repeat:N/ASuggested fix:Support percentile_cont, percentile_disc in ...
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