Question

我有两张完全相同的列。

两者都有名为id的主要身份密钥，自动递增。

我的程序将数据添加到不稳定的表中，然后通过此过程过滤添加到任务表的内容。

妈咪的问题是我有这个更新语句后跟一个插入，由于某种原因，我的更新语句不起作用，当它在程序中时它自己。

我的插入语句在程序中单独使用，但在此更新语句下面时则不起作用。

我想要更新语句

在我的dashboardtasks表中更新我的duedate，如果这3个字段在行中匹配游览 deptdate TASKNAME

如果要添加的行在这3个字段中不匹配，则使用下面的insert语句将行插入新行。

 update dashboardtasks set
         deptdate = s.deptdate,
         tour = s.tour,
          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=dashboardtasks.tour and
          s.taskname=dashboardtasks.taskname and 
          s.deptdate=dashboardtasks.deptdate 


        insert into dashboardtasks (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 dashboardtasks as d
                          where s.tour=d.tour and
                                s.taskname=d.taskname and 
                                s.deptdate=d.deptdate and
                                s.duedate=d.duedate
                         )


id int Unchecked
tour varchar(50) Checked
taskname varchar(50) Checked
deptdate varchar(50) Checked
tasktype varchar(50) Checked
[desc] varchar(MAX) Checked
duedate varchar(50) Checked
compdate varchar(50) Checked
comments varchar(MAX) Checked
agent varchar(50) Checked
compby varchar(50) Checked
graceperiod varchar(50) Checked

这些是我的字段，但compby，comments，compdate和desc为null

Answer 1

以下是您的疑问。

设置测试数据

create table dashboardtasks1(id int identity, tour int, taskname nvarchar(50), deptdate datetime, tasktype nvarchar(50), [desc] nvarchar(50), duedate datetime, compdate datetime, comments nvarchar(50), agent nvarchar(50), compby int, graceperiod int)
create table staggingtasks(id int, tour int, taskname nvarchar(50), deptdate datetime, tasktype nvarchar(50), [desc] nvarchar(50), duedate datetime, compdate datetime, comments nvarchar(50), agent nvarchar(50), compby int, graceperiod int)

insert into staggingtasks(id, tour, taskname, deptdate, tasktype, [desc], duedate, compdate, comments, agent, compby, graceperiod)
    values (62, 3647, 'Request Space', '2011-03-30', 'Land', NULL, '2010-01-06', NULL, NULL, 'PEGGYH', NULL, NULL)
insert into staggingtasks(id, tour, taskname, deptdate, tasktype, [desc], duedate, compdate, comments, agent, compby, graceperiod)
    values (81, 505, 'Rel. Space', '2012-02-22', 'Land', NULL, '2011-12-24', NULL, NULL, 'IMANA', NULL, NULL)
insert into staggingtasks(id, tour, taskname, deptdate, tasktype, [desc], duedate, compdate, comments, agent, compby, graceperiod)
    values (82, 505, 'Ticket', '2012-02-22', 'Air', NULL, '2012-01-08', NULL, NULL, 'SYLVIAT', NULL, NULL)
insert into staggingtasks(id, tour, taskname, deptdate, tasktype, [desc], duedate, compdate, comments, agent, compby, graceperiod)
    values (83, 505, 'Names to Airlines', '2012-02-22', 'Air', NULL, '2012-01-08', NULL, NULL, 'SYLVIAT', NULL, NULL)
insert into staggingtasks(id, tour, taskname, deptdate, tasktype, [desc], duedate, compdate, comments, agent, compby, graceperiod)
    values (90, 505, 'Names to Airlines', '2012-02-22', 'Air', NULL, '2012-01-01', NULL, NULL, 'SYLVIAT', NULL, NULL)
insert into staggingtasks(id, tour, taskname, deptdate, tasktype, [desc], duedate, compdate, comments, agent, compby, graceperiod)
    values (92, 505, 'Names to Airlines', '2012-02-22', 'Air', NULL, '2012-01-01', NULL, NULL, 'SYLVIAT', NULL, NULL)

insert into dashboardtasks1(tour, taskname, deptdate, tasktype, [desc], duedate, compdate, comments, agent, compby, graceperiod)
    values (3647, 'Request Space', '2011-03-30', 'Land', NULL, '2010-11-06', NULL, NULL, 'PEGGYH', NULL, NULL)
insert into dashboardtasks1(tour, taskname, deptdate, tasktype, [desc], duedate, compdate, comments, agent, compby, graceperiod)
    values (505, 'Rel. Space', '2012-02-22', 'Land', NULL, '2011-11-24', NULL, NULL, 'IMANA', NULL, NULL)
insert into dashboardtasks1(tour, taskname, deptdate, tasktype, [desc], duedate, compdate, comments, agent, compby, graceperiod)
    values (505, 'Ticket', '2012-02-22', 'Air', NULL, '2012-11-08', NULL, NULL, 'SYLVIAT', NULL, NULL)
insert into dashboardtasks1(tour, taskname, deptdate, tasktype, [desc], duedate, compdate, comments, agent, compby, graceperiod)
    values (505, 'Names to Airlines', '2012-02-22', 'Air', NULL, '2012-11-08', NULL, NULL, 'SYLVIAT', NULL, NULL)

运行更新语句

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

四行受影响。从dashboardtasks1中选择为您提供此结果

id  tour    taskname    deptdate    tasktype    desc    duedate compdate    comments    agent   compby  graceperiod
1   3647    Request Space   2011-03-30 00:00:00.000 Land    NULL    2010-01-06 00:00:00.000 NULL    NULL    PEGGYH  NULL    NULL
2   505 Rel. Space  2012-02-22 00:00:00.000 Land    NULL    2011-12-24 00:00:00.000 NULL    NULL    IMANA   NULL    NULL
3   505 Ticket  2012-02-22 00:00:00.000 Air NULL    2012-01-08 00:00:00.000 NULL    NULL    SYLVIAT NULL    NULL
4   505 Names to Airlines   2012-02-22 00:00:00.000 Air NULL    2012-01-08 00:00:00.000 NULL    NULL    SYLVIAT NULL    NULL

运行insert语句

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
                 )

两行受到影响。对dashboardtasks1的查询会为您提供此结果。

id  tour    taskname    deptdate    tasktype    desc    duedate compdate    comments    agent   compby  graceperiod
1   3647    Request Space   2011-03-30 00:00:00.000 Land    NULL    2010-01-06 00:00:00.000 NULL    NULL    PEGGYH  NULL    NULL
2   505 Rel. Space  2012-02-22 00:00:00.000 Land    NULL    2011-12-24 00:00:00.000 NULL    NULL    IMANA   NULL    NULL
3   505 Ticket  2012-02-22 00:00:00.000 Air NULL    2012-01-08 00:00:00.000 NULL    NULL    SYLVIAT NULL    NULL
4   505 Names to Airlines   2012-02-22 00:00:00.000 Air NULL    2012-01-08 00:00:00.000 NULL    NULL    SYLVIAT NULL    NULL
5   505 Names to Airlines   2012-02-22 00:00:00.000 Air NULL    2012-01-01 00:00:00.000 NULL    NULL    SYLVIAT NULL    NULL
6   505 Names to Airlines   2012-02-22 00:00:00.000 Air NULL    2012-01-01 00:00:00.000 NULL    NULL    SYLVIAT NULL    NULL

这是预期的行为/结果吗？

Answer 2

将它扔出去，但你是否尝试用内连接替换where子句？像这样：

update dashboardtasks set
     deptdate = s.deptdate,
     tour = s.tour,
      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
    inner join dashboardtasks on
      s.tour=dashboardtasks.tour and
      s.taskname=dashboardtasks.taskname and 
      s.deptdate=dashboardtasks.deptdate

Answer 3

您是否尝试在UPDATE和INSERT语句之间插入SELECT语句？它可能会为您提供一些线索，说明为什么程序无法按预期运行。

此外，where子句的s.duedate=d.duedate部分可能是多余的。

处理插入和更新的存储过程是不可能的？

3 个答案: