3

我刚刚为报告编写了此查询。但是我最初在每个子查询上都没有使用日期范围过滤器来编写它。但这没有用。所以我将它添加到每个子查询中。这很有效，但我真的不喜欢每次都重复它，是否有语法可以更简单地做同样的事情？

 SELECT Count(r.id)                       AS cnt_total,
   (SELECT Count(r1.entity_id)
    FROM   auto_reminders_members r1
    WHERE  r1.reminder_id = r.reminder_id
           AND r1.date_last_reminder BETWEEN CONVERT(DATETIME, '03/28/2013',
                                             101)
                                             AND
               CONVERT(DATETIME,
               '03/28/2013' + ' 23:59:59.997 ', 101)
           AND r1.action = 'notnow') AS cnt_notnow,
   (SELECT Count(r1.entity_id)
    FROM   auto_reminders_members r1
    WHERE  r1.reminder_id = r.reminder_id
           AND r1.date_last_reminder BETWEEN CONVERT(DATETIME, '03/28/2013',
                                             101)
                                             AND
               CONVERT(DATETIME,
               '03/28/2013' + ' 23:59:59.997 ', 101)
           AND r1.action = 'insert') AS cnt_insert,
   (SELECT Count(r1.entity_id)
    FROM   auto_reminders_members r1
    WHERE  r1.reminder_id = r.reminder_id
           AND r1.date_last_reminder BETWEEN CONVERT(DATETIME, '03/28/2013',
                                             101)
                                             AND
               CONVERT(DATETIME,
               '03/28/2013' + ' 23:59:59.997 ', 101)
           AND r1.action = 'update') AS cnt_update,
   (SELECT Count(r1.entity_id)
    FROM   auto_reminders_members r1
    WHERE  r1.reminder_id = r.reminder_id
           AND r1.date_last_reminder BETWEEN CONVERT(DATETIME, '03/28/2013',
                                             101)
                                             AND
               CONVERT(DATETIME,
               '03/28/2013' + ' 23:59:59.997 ', 101)
           AND r1.action = 'verify') AS cnt_verify
FROM   auto_reminders_members r
WHERE  r.reminder_id = 1
       AND r.date_last_reminder BETWEEN CONVERT(DATETIME, '03/28/2013', 101) AND
                                            CONVERT(DATETIME,
                                            '03/28/2013' + ' 23:59:59.997 ', 101
                                            )
GROUP  BY r.reminder_id
4

6 回答 6

11

这是一种无需所有子查询的方法

SELECT  Count(r.id) AS cnt_total,
        sum(case when r.action = 'notnow' then 1 else 0 end) as 'cnt_notnow',
        sum(case when r.action = 'insert' then 1 else 0 end) as 'cnt_insert',
        sum(case when r.action = 'update' then 1 else 0 end) as 'cnt_update',
        sum(case when r.action = 'verify' then 1 else 0 end) as 'cnt_verify'        
FROM    auto_reminders_members r

WHERE  r.reminder_id = 1
       AND CONVERT(DATE, r.date_last_reminder) = '20130328'

我还稍微清理了查询，删除了 group by，因为这将始终为 1，并更改日期比较以避免使用逻辑之间的混乱（感谢 Aaron 的评论）

于 2013-03-28T18:29:21.043 回答
2

这是一种使用GROUPING SETSand的方法PIVOT，但这取决于您使用的版本，您忘记告诉我们了：

DECLARE @reminder_id INT, @date DATE;

SELECT @reminder_id = 1, @date = '20130328';

;WITH x AS 
(
  SELECT [action] = COALESCE([action],'Total'), c2 = COUNT(*)
    FROM dbo.auto_reminders_members
    WHERE reminder_id = @reminder_id
    AND CONVERT(DATE, date_last_reminder) = @date
    GROUP BY GROUPING SETS(([action]), ())
)
SELECT reminder_id = @reminder_id, * FROM x 
PIVOT 
(
  MAX([c2]) FOR [action] IN ([Total],[notnow],[insert],[update],[verify])
) AS p;

如果是 2005，您可以GROUPING SETS使用旧式语法替换该行：

    GROUP BY [action] WITH ROLLUP

我真的希望人们停止宽恕BETWEEN和这种神奇的“一天结束”的东西。如果您想要一整天，您的 WHERE 子句应该是：

WHERE CONVERT(DATE, r.date_last_reminder) = '20130328'

或者，如果您在 2005 年：

WHERE r.date_last_reminder >= '20130328'
  AND r.date_last_reminder <  '20130329'

这里有一些重要的点，主要是23:59:59.997可能会根据基础数据类型四舍五入或遗漏数据，没有理由将日期时间值转换为字符串来执行查询，并且像这样m/d/y的区域格式对各种原因（例如，如果您的查询是针对03/08/2013我不知道您是在 3 月 8 日之后还是 8 月 3 日之后）。

请阅读这些文章：

您还应该小心使用保留字/关键字作为列名，例如entity_id和action。

于 2013-03-28T18:36:32.280 回答
0

你也许可以做这样的事情

SELECT Count(r.id) AS cnt_total,
  SUM(CASE WHEN r1.action = 'notnow') THEN 1 ELSE 0 END) AS cnt_notnow,
  SUM(CASE WHEN r1.action = 'insert') THEN 1 ELSE 0 END) AS cnt_insert,
  SUM(CASE WHEN r1.action = 'update') THEN 1 ELSE 0 END) AS cnt_update,
  SUM(CASE WHEN r1.action = 'verify') THEN 1 ELSE 0 END) AS cnt_verify,

FROM   auto_reminders_members r
WHERE  r.reminder_id = 1
       AND r.date_last_reminder BETWEEN CONVERT(DATETIME, '03/28/2013', 101) AND
                                            CONVERT(DATETIME,
                                            '03/28/2013' + ' 23:59:59.997 ', 101
                                            )
GROUP  BY r.reminder_id
于 2013-03-28T18:29:33.250 回答
0

试试这个：

select 
    reminder_id,
    count(1) as Total,
    sum(case when  r1.action = 'notnow' then 1 else 0 end) as cnt_notnow,
    sum(case when  r1.action = 'insert' then 1 else 0 end) as cnt_insert,
    sum(case when  r1.action = 'update' then 1 else 0 end) as cnt_update,
    sum(case when  r1.action = 'verify' then 1 else 0 end) as cnt_verify
from auto_reminders_members r
WHERE  r.reminder_id = 1
   AND r.date_last_reminder BETWEEN CONVERT(DATETIME, '03/28/2013', 101) AND
                                        CONVERT(DATETIME,
                                        '03/28/2013' + ' 23:59:59.997 ', 101
                                        )
GROUP  BY r.reminder_id
于 2013-03-28T18:30:37.930 回答
0

找到了一种替代解决方案：

 SELECT Sum(1)   AS cnt_total,
   Sum(CASE
         WHEN r.action = 'notnow' THEN 1
         ELSE 0
       END) AS cnt_notnow,
   Sum(CASE
         WHEN r.action = 'insert' THEN 1
         ELSE 0
       END) AS cnt_insert,
   Sum(CASE
         WHEN r.action = 'update' THEN 1
         ELSE 0
       END) AS cnt_update,
   Sum(CASE
         WHEN r.action = 'verify' THEN 1
         ELSE 0
       END) AS cnt_verify

FROM auto_reminders_members r WHERE r.reminder_id = 1 和 r.date_last_reminder 在 CONVERT(DATETIME, '03/28/2013', 101) AND CONVERT(DATETIME, '03/28/2013' + '23:59:59.997', 101 之间)

于 2013-03-28T18:31:24.187 回答
0 
select convert(nvarchar(10),warnt.created_dt,120) 'Date',loc.loc_name 'Location',--   
loctype.LocationTypeDesc,
 (select SUM(stk.sel_price) from tbl_mst_stock as stk 
inner join tbl_gen_warranty as wrn on stk.Stock_ID=wrn.Stock_Id
inner join tbl_mst_model as mdl on mdl.Model_ID=wrn.model_id
where wrn.mobile_type like 'SL')'Selleing Price',
(Select COUNT(stk.stk_code) from tbl_mst_stock as stk 
inner join tbl_gen_warranty as warn on stk.Stock_ID=warn.Stock_Id
inner join tbl_mst_model mdl on mdl.Model_ID=warn.model_id
    where warn.mobile_type like 'SL') 'Stock count'
From tbl_mst_location as loc 
inner join tbl_mst_location_types loctype on loc.LocationTypeID=loctype.LocationTypeID
inner join tbl_gen_warranty as warnt on loc.Location_ID=warnt.Location_id
Where  loctype.LocationTypeID=1 and loctype.group_id=1 
and (CONVERT(nvarchar(10),warnt.created_dt,120) 
Between CONVERT(nvarchar(10),'2013-01-01',120) and convert(nvarchar(10),'2013-07-09'))
Group by loc.loc_name,loctype.LocationTypeDesc,warnt.created_dt,loctype.LocationTypeID
于 2013-07-14T08:27:10.627 回答