如果列结果为空，则使用子查询过滤行

Question

这是我当前的 WIP 查询：

select 
    iclaim_id,
    (select SUM(AuthAmtLineItems) as AuthAmt
     from
         (select 
              cauth_total as AuthAmtLineItems
          from  
              claim_details_history
          where 
              iclaim_id = cd.iclaim_id
              and iclaim_det_status_id = 2
              and btcovered_flag = 1
          group by 
              irecord_id, sdetail_type, sdetail_desc, cauth_total) AuthAmt 
     having 
         SUM(AuthAmtLineItems) > 750) as AuthAmt
from 
    claim_details_history cd
where 
    iclaim_det_status_id = 2
    and btcovered_flag = 1
group by 
    iclaim_id
having 
    min(dtupdate_last) between '02/05/2015 00:00:00.000' and '02/05/2015 23:59:59.997'

这是结果集：

iclaim_id   AuthAmt
67712   3500.00
71054   NULL
71032   NULL
71096   NULL
68824   NULL
71039   NULL
71071   NULL
67863   NULL
71098   NULL
70437   1500.00
71048   NULL
71037   NULL
71080   NULL
71035   NULL
71049   NULL
71118   NULL
71053   759.14

我正在尝试但未能做到的是删除其中包含 NULL 的行或 having SUM(AuthAmtLineItems) > 750 哪个选项更容易。

Answer 1

而不是 correlated subquery 使用 cross apply

SELECT iclaim_id,
       AuthAmt
FROM   claim_details_history cd
       CROSS apply (SELECT Sum(AuthAmtLineItems) AS AuthAmt
                    FROM   (SELECT cauth_total AS AuthAmtLineItems
                            FROM   claim_details_history
                            WHERE  iclaim_id = cd.iclaim_id
                                   AND iclaim_det_status_id = 2
                                   AND btcovered_flag = 1
                            GROUP  BY irecord_id,
                                      sdetail_type,
                                      sdetail_desc,
                                      cauth_total) AuthAmt
                    HAVING Sum(AuthAmtLineItems) > 750) cs
WHERE  iclaim_det_status_id = 2
       AND btcovered_flag = 1
GROUP  BY iclaim_id
HAVING Min(dtupdate_last) BETWEEN '02/05/2015 00:00:00.000' AND '02/05/2015 23:59:59.997'

如果列结果为空，则使用子查询过滤行

Filtering row with sub queries if column result is null

sql

tsql

sql-server