SQL 除以二 Count()

SQL Divide by Two Count()(SQL 除以二 Count())

问题描述

我有以下查询，它试图找出某个产品占产品总数的百分比.IE:[产品数量]/[产品总数] = 百分比

I have the following query, which is trying to figure out the percentage of a certain product compared to the total number of products. IE: [Product Count] / [Total Products] = Percent

;WITH totalCount AS(
    SELECT 
        CAST(COUNT(id) as Integer)as totalCount
    FROM TABLE_NAME
)
SELECT 
    ((CAST(COUNT(DISTINCT id) as Integer)/(SELECT * FROM totalCount))*100) as 'Percent'
FROM TABLE_NAME

但是，除非只有一条记录，否则百分比列始终返回0".另外，有没有办法将totalCount和Select查询合二为一?

However, the percent column always returns "0" unless there is only one record. In addition, is there a way to add the totalCount and Select query into one?

基本上，如何划分两个 Count() 字段?

Basically, how do you divide two Count() fields?

推荐答案

将您的总数作为除整数之外的数字(DECIMAL?) - 数学四舍五入.

Cast your total count as a number besides integer (DECIMAL?) - the math rounds off.

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