列出所有包含特定員工姓名的表

Question

我有一個員工姓名列表和一個表列表。我需要迭代所有員工姓名並查找哪個表的員工姓名存在。所有要迭代的表存在於同一臺服務器和同一個數據庫中。

樣本數據結構

Create Table TableNamesToCheck (dbName varchar(15)) 

Insert Into TableNamesToCheck 
Values ('table1'), ('table2'), ('table3'), ('table4'), ('table5'), 
     ('table6'), ('table7'), ('table8'), ('table9'), ('table10') 

Create Table EN (employeename varchar(100)) 

Insert Into EN 
Values ('Richard Marx'), ('Joseph Jones'), ('Mark Badcock'), 
     ('Frank Fins'), ('Richard James'), ('Fall Fren'), ('Hiu Hen') 

謝謝@Giorgi ---我明白使用光標對我表名，但我如何加入兩個表，當他們沒有類似的領域上加入2個表？這是我的（工作正在進行），如果我明白你在解釋這是我的語法，但它給了我每個員工和每個表的以下錯誤...

Msg 207，Level 16，狀態1，行1 無效的列名稱'employeename'。 消息207，級別16，狀態1，行1 列名稱'Richard'無效。

Declare @dbname varchar(25), @empname varchar(100), @sql varchar(Max) 

Create Table TableNamesToCheck (dbName varchar(15)) 

Insert Into TableNamesToCheck 
Values ('table1'), ('table2'), ('table3'), ('table4'), ('table5'), 
    ('table6'), ('table7'), ('table8'), ('table9'), ('table10') 

Create Table EN (employeename varchar(100)) 

Insert Into EN 
Values ('Richard Marx'), ('Joseph Jones'), ('Mark Badcock'), 
    ('Frank Fins'), ('Richard James'), ('Fall Fren'), ('Hiu Hen') 


Declare c1 Cursor For 
Select dbname 
From TableNamesToCheck 

Open c1 
Fetch Next from c1 into @dbname 

Declare c2 Cursor For 
Select employeename 
From EN 

Open c2 
Fetch Next from c2 into @empname 

While @@FETCH_STATUS = 0 
Begin 

    While @@FETCH_STATUS = 0 
    Begin 

     Set @sql = 'Select '+@dbname+' From TableNamesToCheck where employeename IN (Select '+@empname+' from EN)' 

     Exec (@sql) 

    Fetch Next From c1 Into @dbname 
    Fetch Next From c2 Into @empname 

    End 

End 


Close c1 
Close c2 
Deallocate c1 
Deallocate c2 

Drop Table TableNamesToCheck 
Drop Table EN 

Answer 1

不是100％肯定，但你可能會尋找這樣的： -

Set Nocount On; 

Declare @Sql  Varchar(Max) 
     ,@Total  Int 
     ,@RowId  Int 
     ,@EmpName Varchar(100) 
     ,@Total2 Int 
     ,@RowId2 Int 
     ,@TableName Varchar(15) 

Select @Sql = '' 
     ,@EmpName = '' 
     ,@TableName = '' 

If Object_Id('tempdb.dbo.#TableNamesToCheck') Is Not Null 
Begin 
    Drop Table #TableNamesToCheck; 
End 

If Object_Id('tempdb.dbo.#EN') Is Not Null 
Begin 
    Drop Table #EN; 
End 

If Object_Id('tempdb.dbo.#EnTables') Is Not Null 
Begin 
    Drop Table #EnTables; 
End 

Create Table #TableNamesToCheck 
(
    dbId   Int Identity(1,1) Primary Key 
    ,dbName   Varchar(15) 
) 

Create Table #EN 
(
    RowId   Int Identity(1,1) Primary Key 
    ,employeename Varchar(100) 
) 

Create Table #EnTables 
(
    Id    Int Identity(1,1) Primary Key 
    ,EmployeeName Varchar(100) 
    ,dbName   Varchar(15) 
) 

Insert Into #TableNamesToCheck 
Values ('table1'), ('table2'), ('table3'), ('table4'), ('table5'), 
     ('table6'), ('table7'), ('table8'), ('table9'), ('table10') 

Insert Into #EN 
Values ('Richard Marx'), ('Joseph Jones'), ('Mark Badcock'), 
     ('Frank Fins'), ('Richard James'), ('Fall Fren'), ('Hiu Hen') 

Select @Total = Count(1) 
     ,@RowId = 1 
From #EN As en With (Nolock) 

Select @Total2 = Count(1) 
     ,@RowId2 = 1 
From #TableNamesToCheck As et With (Nolock) 

While (@RowId <= @Total) 
Begin 
    Select @EmpName = en.employeename 
    From #EN As en With (Nolock) 
    Where en.RowId = @RowId 

    While (@RowId2 <= @Total2) 
    Begin 
     Select @TableName = et.dbName 
     From #TableNamesToCheck As et With (Nolock) 
     Where et.dbId = @RowId2 

     Select @Sql = ' If Exists ' + 
         ' (' + 
          ' Select 1 ' + 
          ' From  ' + @TableName + ' As t With (Nolock) ' + 
          ' Where  t.employeename = ''' + @EmpName + ''' ' + 
          ') ' + 
         ' Begin ' + 
          ' Insert Into #EnTables(EmployeeName,dbName) ' + 
          ' Select ''' + @EmpName + ''' ' + 
             ' ,''' + @TableName + ''' ' + 
          ' End ' 
     ----Print(@Sql) 
     Exec (@Sql) 

     Select @RowId2 = @RowId2 + 1 
    End 

    Select @RowId = @RowId + 1 
      ,@RowId2 = 1 
      ,@EmpName = '' 
      ,@TableName = '' 
End 

Select * 
From #EnTables As et With (Nolock)