具有多个子查询的SELECT查询计数

时间：2013-03-28 18:20:09

标签： sql-server select count sql-server-2012

我刚刚为报告撰写了此查询。但我最初在每个子查询中都没有使用日期范围过滤器编写它。但那没用。所以我将它添加到每个子查询中。这很有效，但我不是每次都要重复它，是否有语法来做同样的事情更简单？

 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

6 个答案:

答案 0 :(得分：11)

如果没有所有子查询

，这是一种方法 
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'

我还清理了一下查询，删除了组，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）

答案 1 :(得分：2)

以下是使用GROUPING SETS和PIVOT的方法，但这取决于您使用的版本，您忘了告诉我们：

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，您可以使用旧式语法替换GROUPING SETS行：

    GROUP BY [action] WITH ROLLUP

我真的希望人们不再容忍BETWEEN和这个神奇的“日常结束”的东西。如果你想要一整天你的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'

这里有一些重点，主要是23:59:59.997可能会根据基础数据类型对数据进行舍入或遗漏，没有理由将日期时间值转换为字符串来执行查询，以及像m/d/y这样的区域格式由于各种原因而不好（例如，如果您的查询是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：

您还应该注意为列名使用保留字/关键字，例如entity_id和action。

答案 2 :(得分：0)

你可能会做这样的事情

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

答案 3 :(得分：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

答案 4 :(得分：0)

找到一个替代解决方案：

 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 在哪里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                                             ）

答案 5 :(得分：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
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