Question

我有一个名为'LoginSession'的表，其中包含以下字段

    id 
    CreatedDate
    UserAgent [which stores browser name as a string ]

我想编写一个查询来获取特定时间段内每个浏览器的计数。

我使用了以下查询

        WITH BrowserShortCode_CTE AS(
        SELECT  UserAgent,
                case            
                    when Replace(UserAgent, ' ', '') like '%MSIE10.0%' then 'Internet Explorer 10'
                    when Replace(UserAgent, ' ', '') like '%MSIE9.0%' then 'Internet Explorer 9'
                    when Replace(UserAgent, ' ', '') like '%MSIE8.0%' then 'Internet Explorer 8'
                    when Replace(UserAgent, ' ', '') like '%MSIE7.0%' then 'Internet Explorer 7'
                else 'Others'
                end as BrowserName        
                FROM LoginSession 
                WHERE 
                CreatedDate >  '2017-01-01' 
                AND CreatedDate <  '2017-01-10' 
        )
        SELECT Count(0) as TotalCount, [BrowserName] FROM BrowserShortCode_CTE
        GROUP BY BrowserName
        ORDER BY TotalCount DESC

将结果返回为

    Internet Explorer 10    100 
    Others                   95
    Internet Explorer 9       5
    Internet Explorer 8       2         
    Internet Explorer 7       1

如何将一个字段CreatedDate添加到分组中，并输出

    Date        BrowserName            Totalcount

，即每天浏览器明智使用情况的总和。

Answer 1

    WITH BrowserShortCode_CTE AS(
    SELECT  UserAgent,
            case            
                when Replace(UserAgent, ' ', '') like '%MSIE10.0%' then 'Internet Explorer 10'
                when Replace(UserAgent, ' ', '') like '%MSIE9.0%' then 'Internet Explorer 9'
                when Replace(UserAgent, ' ', '') like '%MSIE8.0%' then 'Internet Explorer 8'
                when Replace(UserAgent, ' ', '') like '%MSIE7.0%' then 'Internet Explorer 7'
            else 'Others'
            end as BrowserName,
            CAST(CreatedDate as DATE) as CreatedDate        
            FROM LoginSession 
            WHERE 
            CreatedDate >  '2017-01-01' 
            AND CreatedDate <  '2017-01-10' 
    )
    SELECT Count(0) as TotalCount, [BrowserName], CreatedDate FROM BrowserShortCode_CTE
    GROUP BY BrowserName, CreatedDate
    ORDER BY CreatedDate, TotalCount DESC

在查询上按日期分组以及案例选择

1 个答案: