Question

我要求在结果集中显示百分比值和其他列值。

SQl的

select Name, days from table

O / P结果集

Name  days
Sam   20
ram   30

我需要的是

Name  days Percentage
 Sam   20  40
 ram   30  60

所以我修改了我的查询，如下所示

select Name, days, (days / sum(days)) as Percentage
from (select Name, days from table) as temp

但能够获得所需的o / p。提前致谢

Answer 1

您可以使用CROSS JOIN

select Name, days, days * 100 / t.sum_days as Percentage
from table
cross join (
   select sum(days) sum_days from table
) t

如果days为int，那么您应首先将其投射以获得更准确的结果：cast(days as decimal(10,2))

Answer 2

declare @tab table (name varchar(30),[days] int)
insert into @tab
select 'Sam',   20
union all
select 'ram',   30

declare @sum int
set @sum = (select sum(days) from @tab)

select name,days ,days*100/@sum   as per
from @tab

输出

name    days    per
Sam     20      40
ram     30      60

Answer 3

另一种选择是使用窗口函数

select 
    Name, days
    , Percentage = 100.0 * days / sum(days) over ()
from table

Answer 4

有一个不相关的子查询来返回总天数：

<http:listener-config name="HTTP_Listener_Configuration" host="0.0.0.0" port="8081" doc:name="HTTP Listener Configuration"/>
<http:request-config name="HTTP_Request_Configuration" host="webservicehostadd" port="443" doc:name="HTTP Request Configuration">
        <http:basic-authentication username="username" password="pass"/>
    </http:request-config>
    <ws:consumer-config name="Web_Service_Consumer" wsdlLocation="https://xxxx/1.0?wsdl" service="xxx" port="xxxx" serviceAddress="https://xxxxx/1.0" connectorConfig="HTTP_Request_Configuration" doc:name="Web Service Consumer"/>
    <flow name="mycustomflow">
        <http:listener config-ref="HTTP_Listener_Configuration" path="/TEST" doc:name="HTTP"/>
        <set-property propertyName="APIKey" value="xxx-xxx-xxx-xxx-xxx" doc:name="Property"/>
        <dw:transform-message doc:name="Transform Message" metadata:id="xxx-xxx-xxx-xxx-xxxxxxxx">
            <dw:input-payload mimeType="application/xml"/>
            <dw:set-payload><![CDATA[%dw 1.0
%output application/xml
%namespace ns0 http://localhost/getDetails:getDetailsWSD
---
{
    ns0#getDetails: {
        getDetailsOrder: {
            ID: payload.ns0#getDetails.getDetailsOrder.ID,
            AllData: payload.ns0#getDetails.getDetailsOrder.AllData
        }
    }
}]]></dw:set-payload>
        </dw:transform-message>
        <ws:consumer config-ref="Web_Service_Consumer" operation="employeeDetails" doc:name="Web Service Consumer"/>
    </flow>

It showed the below error:

Exception while executing: 
[row,col]: [1,1]
Unexpected character '{' (code 123) in prolog; expected '<'
 at [row,col {unknown-source}]: [1,1].

从SubQuery ResultSet获取百分比

4 个答案: