Sql 使用特定值从多个表中删除记录

今天,， 我想从SQLServer中的几个表中删除所有测试记录。 以下是我想要实现的目标

Select ID from sourceTable where acctType='S' and acctroot<>0

现在这些是我需要清理的桌子

delete from tmpA where ID=1
delete from tmpB where acctID=1
delete from tmpC where userID = 1
delete from tmpD where sID=1
.
.
.
delete from tmpA where ID=2
delete from tmpB where acctID=2
delete from tmpC where userID =2
delete from tmpD where sID=2

我可以循环源表并提取ID，然后从表中删除吗？我知道我可以使用连接，但我想使用While循环来实现这一点。

你不需要While循环，你可以像下面那样使用WHERE EXISTS

您还需要对其他表执行相同的操作。

您不需要WHILE循环，您可以使用WHERE EXISTS执行以下操作

您还需要对其他表执行相同的操作。

就这么简单

... WHERE ID IN (Select ID from sourceTable where acctType='S' and acctroot<>0)

像这样：

delete from tmpA where ID IN (Select ID from sourceTable where acctType='S' and acctroot<>0)
delete from tmpB where acctID IN (Select ID from sourceTable where acctType='S' and acctroot<>0)
delete from tmpC where userID IN (Select ID from sourceTable where acctType='S' and acctroot<>0)
delete from tmpD where sID IN (Select ID from sourceTable where acctType='S' and acctroot<>0)

就这么简单

... WHERE ID IN (Select ID from sourceTable where acctType='S' and acctroot<>0)

像这样：

delete from tmpA where ID IN (Select ID from sourceTable where acctType='S' and acctroot<>0)
delete from tmpB where acctID IN (Select ID from sourceTable where acctType='S' and acctroot<>0)
delete from tmpC where userID IN (Select ID from sourceTable where acctType='S' and acctroot<>0)
delete from tmpD where sID IN (Select ID from sourceTable where acctType='S' and acctroot<>0)

---

你不需要while循环

    delete from tmpA where ID IN (Select ID from sourceTable where acctType='S' and acctroot<>0)

---

你不需要while循环

    delete from tmpA where ID IN (Select ID from sourceTable where acctType='S' and acctroot<>0)

---

确保您的ID存在于sourcetable上的另一种方法是使用内部联接

DELETE T
FROM tmpA T
     INNER JOIN sourcetable S ON S.id = T.id AND S.accttype = 'S' AND S.acctroot  <> 0  

---

确保您的ID存在于sourcetable上的另一种方法是使用内部联接

DELETE T
FROM tmpA T
     INNER JOIN sourcetable S ON S.id = T.id AND S.accttype = 'S' AND S.acctroot  <> 0  

试试这个

Declare @Temp_Table Table (Id int identity(1,1),Table_Name varchar(30),Column_Name varchar(30))

insert into @Temp_Table
select 'tmpA','ID'
union all
select 'tmpB','acctID'
union all
select 'tmpC','userID'
union all
select 'tmpD','sID'

Declare @Counter int=1
        ,@Tot_Count int=0
        ,@Table_Name varchar(30)=''
        ,@Column_Name varchar(30)=''

select @Tot_Count=count(1) 
from @Temp_Table

While @Tot_Count >= @Counter
Begin

         Select @Table_Name=Table_Name
                ,@Column_Name=Column_Name
           From @Temp_Table
          Where Id=@Counter

           Exec
           (
                '
                 Delete A 
                   From '+@Table_Name+' A
             inner join sourceTable B 
                     on A.'+@Column_Name+'=B.ID
                  where B.acctType=''S'' 
                    and B.acctroot<>0
                '
           )

           Set @Counter+=1
End

试试这个

Declare @Temp_Table Table (Id int identity(1,1),Table_Name varchar(30),Column_Name varchar(30))

insert into @Temp_Table
select 'tmpA','ID'
union all
select 'tmpB','acctID'
union all
select 'tmpC','userID'
union all
select 'tmpD','sID'

Declare @Counter int=1
        ,@Tot_Count int=0
        ,@Table_Name varchar(30)=''
        ,@Column_Name varchar(30)=''

select @Tot_Count=count(1) 
from @Temp_Table

While @Tot_Count >= @Counter
Begin

         Select @Table_Name=Table_Name
                ,@Column_Name=Column_Name
           From @Temp_Table
          Where Id=@Counter

           Exec
           (
                '
                 Delete A 
                   From '+@Table_Name+' A
             inner join sourceTable B 
                     on A.'+@Column_Name+'=B.ID
                  where B.acctType=''S'' 
                    and B.acctroot<>0
                '
           )

           Set @Counter+=1
End

---

您总是可以编写t-sql或使用动态查询。我想知道为什么您说您不想要带有联接的解决方案，而接受带有EXISTS？的解决方案？。SQL Server引擎也是如此。您始终可以编写t-SQL或使用动态查询。我想知道您为什么说不希望使用联接的解决方案，而接受使用EXISTS？的解决方案？。对于SQL Server引擎，它们是相同的。对不起，问这个问题：Doops对不起，问这个问题：D