需要帮助构建一个将行从一个表转移到另一个表的存储过程

Question

好吧，我构建了这个存储过程来从临时表中获取列并将它们复制到我的另一个表中，但是如果这四列是重复的，它不会插入行，工作正常。

但是，我想要做的是，如果只有游览、任务名称和部门日期相同，那么我将更新其余信息。如果所有四列都相同，请不要插入。

INSERT INTO dashboardtasks1
    SELECT [tour], [taskname], [deptdate], [tasktype], [desc], [duedate], [compdate], [comments], [agent], [compby], [graceperiod]
    FROM staggingtasks
    WHERE NOT EXISTS(SELECT * 
                     FROM dashboardtasks1 
                     WHERE (staggingtasks.tour=dashboardtasks1.tour and
                         staggingtasks.taskname=dashboardtasks1.taskname and 
    staggingtasks.deptdate=dashboardtasks1.deptdate and 
   staggingtasks.duedate=dashboardtasks1.duedate 
    )
                     )

我看到了这样的东西

INSERT INTO table (a,b,c) VALUES (1,2,3)
  ON DUPLICATE KEY UPDATE c=c+1;

UPDATE table SET c=c+1 WHERE a=1;

但如果我声明的 3 列相同然后更新，我该怎么做？

或者有没有办法使用 if 语句来执行此操作并使用 2 个不同的查询，但是我的 if 语句将如何工作它会检查我正在上传到的表中是否存在该行然后运行插入语句？

如果我做了类似的事情会怎样

alter PROCEDURE test

AS
BEGIN
    -- SET NOCOUNT ON added to prevent extra result sets from
    -- interfering with SELECT statements.
    SET NOCOUNT ON;

    -- Insert statements for procedure here


update dashboardtasks set
    duedate = s.duedate
from staggingtasks as s
    where s.tour=dashboardtasks.tour and
            s.taskname=dashboardtasks.taskname and 
        s.deptdate=dashboardtasks.deptdate


INSERT INTO dashboardtasks
SELECT [tour], [taskname], [deptdate], [tasktype], [desc], [duedate], [compdate], [comments], [agent], [compby], [graceperiod]
FROM staggingtasks
WHERE NOT EXISTS(SELECT * 
                 FROM dashboardtasks 
                 WHERE (staggingtasks.tour=dashboardtasks.tour and
                       staggingtasks.taskname=dashboardtasks.taskname and 
staggingtasks.deptdate=dashboardtasks.deptdate and 
staggingtasks.duedate=dashboardtasks.duedate 
)
                 )




END
GO

分期

 62 3647    Request Space   3/30/2011   Land    NULL    1/6/2010    NULL    NULL    PEGGYH      NULL    NULL

    81  505 Rel. Space  02/22/2012  Land    NULL    12/24/2011  NULL    NULL    IMANA       NULL    NULL

    82  505 Ticket  02/22/2012  Air NULL    1/8/2012    NULL    NULL    SYLVIAT     NULL    NULL

    83  505 Names to Airlines   02/22/2012  Air NULL    1/8/2012    NULL    NULL    SYLVIAT     NULL    NULL

    90  505 Names to Airlines   02/22/2012  Air NULL    1/1/2012    NULL    NULL    SYLVIAT     NULL    NULL

   92   505 Names to Airlines   02/22/2012  Air NULL    1/1/2012    NULL    NULL    SYLVIAT     NULL    NULL

表格

1   3647    Request Space   3/30/2011   Land    NULL    11/6/2010   NULL    NULL    PEGGYH      NULL    NULL

    2   505 Rel. Space  02/22/2012  Land    NULL    11/24/2011  NULL    NULL    IMANA       NULL    NULL

    3   505 Ticket  02/22/2012  Air NULL    11/8/2012   NULL    NULL    SYLVIAT     NULL    NULL

    4   505 Names to Airlines   02/22/2012  Air NULL    11/8/2012   NULL    NULL    SYLVIAT     NULL    NULL

结果

  1 3647    Request Space   3/30/2011   Land    NULL    1/6/2010    NULL    NULL    PEGGYH      NULL    NULL

    2   505 Rel. Space  02/22/2012  Land    NULL    12/24/2011  NULL    NULL    IMANA       NULL    NULL

    3   505 Ticket  02/22/2012  Air NULL    1/8/2012    NULL    NULL    SYLVIAT     NULL    NULL

    4   505 Names to Airlines   02/22/2012  Air NULL    1/8/2012    NULL    NULL    SYLVIAT     NULL    NULL

   5    505 Names to Airlines   02/22/2012  Air NULL    1/1/2012    NULL    NULL    SYLVIAT     NULL    NULL

   6    505 Names to Airlines   02/22/2012  Air NULL    1/1/2012    NULL    NULL    SYLVIAT     NULL    NULL

Answer 1

这可能对你有用。

update dashboardtasks1 set
  tasktype = s.tasktype,
  [desc] = s.[desc],
  duedate = s.duedate,
  compdate = s.compdate,
  comments = s.comments,
  agent = s.agent,
  compby = s.compby,
  graceperiod    = s.graceperiod
from staggingtasks as s
where
  s.tour=dashboardtasks1.tour and
  s.taskname=dashboardtasks1.taskname and 
  s.deptdate=dashboardtasks1.deptdate and
  not exists (select *
              from dashboardtasks1 as d
              where s.tour=d.tour and
                    s.taskname=d.taskname and 
                    s.deptdate=d.deptdate and
                    s.duedate=d.duedate
             )        


insert into dashboardtasks1 (tour, taskname, deptdate, tasktype, [desc], duedate, compdate, comments, agent, compby, graceperiod)
select tour, taskname, deptdate, tasktype, [desc], duedate, compdate, comments, agent, compby, graceperiod
from staggingtasks as s
where not exists (select *
                  from dashboardtasks1 as d
                  where s.tour=d.tour and
                        s.taskname=d.taskname and 
                        s.deptdate=d.deptdate and
                        s.duedate=d.duedate
                 )

Answer 2

LEFT OUTER JOIN 可以解决问题

INSERT INTO dashboardtasks1 (tour, taskname, deptdate, tasktype, desc, duedate, compdate, comments, agent, compby, graceperiod)
SELECT s.tour, s.taskname, s.deptdate, s.tasktype, s.desc, s.duedate, s.compdate, s.comments, s.agent, s.compby, s.graceperiod
FROM staggingtasks s
LEFT OUTER JOIN  dashboardtasks1 d ON d.tour=s.tour and d.taskname=s.taskname and d.deptdate=s.deptdate
WHERE d.tour IS NULL

您在这里所做的是将两个表连接到您要匹配的值上。

如果dashboardtasks1 中没有您加入的值存在的行（在本例中为tour、taskname 和deptdate），它将插入一行。否则不会。