SQL Server - 删除抵消(money)行

时间:2014-07-12 22:53:49

标签: sql sql-server tsql

我有一些数据 - 按照LineNum分组 - 我需要做的是 - 删除所有相互设置的行,使用负和正的totalOrg值 - 所以在任何情况下,一行有2个正数和一个否定 - 删除正面和负面(totalOrg)行(其中claimDetailID之外的所有其他值相等)并保留剩余的正数...

DROP TABLE #table
CREATE TABLE #table (linenum int,   HCPCSOrg varchar(10),   reimbOrg money, unitsOrg           int, totalorg money, claimdetailID int,  comments varchar(500))
INSERT INTO #table
SELECT 1,   '84443',    22.93,  1,  -82.00  ,1072766,   'Status: N - No Other Lab Codes         In Claim - Reimb ClinLab'
UNION ALL
SELECT 1,   '84443',    22.93,  1,  82.00,  1072767,    'Status: N - No Other Lab Codes In Claim - Reimb ClinLab'
UNION ALL
SELECT 1,   '84443',    22.93,  1,  82.00,  1072768,    'Status: N - No Other Lab Codes     In Claim - Reimb ClinLab'
UNION ALL
SELECT 2,   '36415',    3.00,   1,  -15.00, 1072769,    'Status: N - No Other Lab Codes In Claim - Reimb ClinLab'
UNION ALL
SELECT 2,   '36415',    3.00,   1,  15.00,  1072770,    'Status: N - No Other Lab Codes In Claim - Reimb ClinLab'
UNION ALL
SELECT 2,   '36415',    3.00,   1,  15.00,  1072771,    'Status: N - No Other Lab Codes In Claim - Reimb ClinLab'
UNION ALL
SELECT 3,   '87621',    47.87,  1,  227.00, 1072772,    'Status: N - No Other Lab Codes In Claim - Reimb ClinLab'
UNION ALL
SELECT 3,   '85025',    10.61,  1,  40.00,  1072773,    'Status: N - No Other Lab Codes In Claim - Reimb ClinLab'
UNION ALL
SELECT 3,   '85025',    10.61,  1,  -40.00, 1072774,    'Status: N - No Other Lab Codes In     Claim - Reimb ClinLab'
UNION ALL
SELECT 4,   'G0123',    27.64,  1,  -74.00, 1072775,    'Status: A - Found in ClinLab'
UNION ALL
SELECT 4,   'G0123',    27.64,  1,  74.00,  1072776,    'Status: A - Found in ClinLab'
UNION ALL
SELECT 4,   '85025',    10.61,  1,  40.00,  1072777,    'Status: N - No Other Lab Codes     In Claim - Reimb ClinLab'
UNION ALL
SELECT 5,   'G0123',    27.64,  1,  74.00,  1072778,    'Status: A - Found in ClinLab'


SELECT * FROM #table

1 个答案:

答案 0 :(得分:2)

试试这个:

delete from [table]
from
(
  select p.claimdetailid p
  , n.claimdetailid n 
  from (
    select claimdetailid
    , linenum
    , hcpcsorg
    , reimborg
    , unitsorg
    , 0-totalorg totalorg
    , row_number() over (partition by linenum, hcpcsorg, reimborg, unitsorg, totalorg order by claimdetailid) r
    from [table]
    where totalorg >= 0
  ) p
  inner join (
    select claimdetailid
    , linenum
    , hcpcsorg
    , reimborg
    , unitsorg
    , totalorg
    , row_number() over (partition by linenum, hcpcsorg, reimborg, unitsorg, totalorg order by claimdetailid) r
    from [table]
    where totalorg <= 0
  ) n
  on n.linenum = p.linenum
  and n.hcpcsorg = p.hcpcsorg
  and n.reimborg = p.reimborg
  and n.unitsorg = p.unitsorg
  and n.totalorg = p.totalorg
  and n.r = p.r
) x
where [table].claimdetailid in (x.p, x.n);

SQL小提琴:http://sqlfiddle.com/#!6/d8910/4

<强>解释

  • p和n子查询列出正值和负值(我在两者中都包含零,因为我猜这些与自己协调)。

  • row_number() over (partition by ....确保匹配比例超过1:1时,只删除匹配对(例如,如果我有2个负值和4个正值,其他所有值相等,则删除后2正值将保持不变。

  • 开头的双from是删除语句(How to Delete using INNER JOIN with SQL Server?)的作弊内部联接,它允许我轻松地将claimdetail与正值和负值进行比较,并且最有效可用选项(例如,与执行exists语句或必须重复x子查询相比较,一次返回正数,一次返回负数。

  • 0-totalorg将负值转换为正值,因此可以将其与内部联接中的对帐(抵消)正值进行比较。

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