一张表插入另一张表没有重复记录

Question

我想将数据从表 T1 复制到表 T2，条件如下： 1）数据不应重复。 2)T1-Checkin和T2-checkin列的时间差必须大于5秒。

我现有的程序这个

ALTER PROCEDURE [dbo].[usp_InsertUserAttendanceLog] @userId varchar(400),@CheckInCheckOutDate datetime,@WorkDate datetime,@InOutMode int,@VerifyMode int, @InsertDate datetime
AS
BEGIN
if 
not exists (select 1 from tblAttendance where CheckInCheckOutDate=@CheckInCheckOutDate and WorkDate=@WorkDate and InOutMode=@InOutMode and VerifyMode=@VerifyMode )
begin
if
not exists (select 1 from tblAttendance where empCode=@userId and convert(date,CheckInCheckOutDate)=convert(date,@CheckInCheckOutDate) and DATEDIFF(second,CheckInCheckOutDate,@CheckInCheckOutDate) <= 3)
begin
 INSERT INTO tblAttendance(EmpCode,CheckInCheckOutDate,WorkDate,InoutMode,VerifyMode,InsertDate)
 VALUES(@userId,@CheckInCheckOutDate,@WorkDate,@InOutMode,@VerifyMode,@InsertDate)
 end
 end
end

我尝试了这样的代码，但不起作用。得到重复

INSERT INTO tblAttendance (EmpCode,CheckInCheckOutDate,WorkDate,InOutMode,VerifyMode,InsertDate,[Status])
SELECT T1.EmpCode,T1.CheckInCheckOutDate,T1.WorkDate,T1.InOutMode,T1.VerifyMode,T1.InsertDate,T1.[Status]
  FROM testAttendanceBulk T1
 WHERE NOT EXISTS(select 1 from tblAttendance T2 where T2.CheckInCheckOutDate=T1.CheckInCheckOutDate
 and T2.WorkDate=T1.WorkDate and T2.InOutMode=T1.InOutMode 
 and T2.VerifyMode=T1.VerifyMode and T2.empCode=T1.EmpCode 
 and convert(date,T2.CheckInCheckOutDate)=convert(date,T1.CheckInCheckOutDate) 
 and DATEDIFF(second,T2.CheckInCheckOutDate,T1.CheckInCheckOutDate) <= 5)  

it's my table structure

Answer 1

很确定你可以使用这样的东西。请注意我对 DATEFIFF 谓词的评论，这可能是您面临的问题的一部分。

INSERT INTO tblAttendance 
(
    EmpCode
    , CheckInCheckOutDate
    , WorkDate
    , InOutMode
    , VerifyMode
    , InsertDate
    , [Status]
)
SELECT ab.EmpCode
    , ab.CheckInCheckOutDate
    , ab.WorkDate
    , ab.InOutMode
    , ab.VerifyMode
    , ab.InsertDate
    , ab.[Status]
FROM testAttendanceBulk ab
LEFT JOIN tblAttendance a ON a.CheckInCheckOutDate = ab.CheckInCheckOutDate
    AND a.WorkDate = ab.WorkDate 
    AND a.InOutMode = ab.InOutMode 
    AND isnull(a.VerifyMode, 0) = isnull(ab.VerifyMode, 0) 
    AND a.empCode = ab.EmpCode 
    AND CONVERT(DATE, a.CheckInCheckOutDate) = CONVERT(DATE, ab.CheckInCheckOutDate) 
    AND DATEDIFF(SECOND, a.CheckInCheckOutDate, ab.CheckInCheckOutDate) <= 5 --do you really want 5 here? Your original query had 3.
WHERE a.empCode IS NULL

Answer 2

在您的加入中，您正在检查 CheckinCheckoutDate 是否相等，以及是否存在 >5 秒的差异。尝试摆脱 t1.CheckinCheckoutDate = T2.CheckinCheckoutDate;

 INSERT
      INTO tblAttendance 
           (EmpCode,
            CheckInCheckOutDate,
            WorkDate,
            InOutMode,
            VerifyMode,
            InsertDate,
            [Status])
    SELECT
  DISTINCT T1.EmpCode,
           T1.CheckInCheckOutDate,
           T1.WorkDate,
           T1.InOutMode,
           T1.VerifyMode,
           T1.InsertDate,
           T1.[Status]
      FROM testAttendanceBulk T1
     WHERE NOT EXISTS(SELECT T1.EmpCode,
                             T1.CheckInCheckOutDate,
                             T1.WorkDate,
                             T1.InOutMode,
                             T1.VerifyMode,
                             T1.InsertDate,
                             T1.[Status]
                        FROM tblAttendance T2
                       WHERE 1=1 --T2.CheckInCheckOutDate=T1.CheckInCheckOutDate
                         AND T2.WorkDate=T1.WorkDate 
                         AND T2.InOutMode=T1.InOutMode 
                         AND T2.VerifyMode=T1.VerifyMode
                         AND T2.empCode=T1.EmpCode 
                         AND convert(date,T2.CheckInCheckOutDate)=convert(date,T1.CheckInCheckOutDate) 
                         AND DATEDIFF(second,T2.CheckInCheckOutDate,T1.CheckInCheckOutDate) <= 5)