從另一個表中插入表甚至列數不匹配？

Question

我想從一個表（或存儲過程）插入數據到臨時表。臨時表列計數與源表列計數不匹配。我想要將來源數據從開始列插入到臨時表中，其餘列將清空字符串列。

這意味着如果Temp表有10列，並且源表只有3列，則將前3列插入臨時表中，其餘7列將爲空或空。

例子：

CREATE TABLE #VarTemp(Col1 nvarchar(256), Col2 nvarchar(256), Col3 nvarchar(256), 
         Col4 nvarchar(256), Col5 nvarchar(256), Col6 nvarchar(256), 
         Col7 nvarchar(256), Col8 nvarchar(256), Col9 nvarchar(256), 
         Col10 nvarchar(256)) 

INSERT into #VarTemp 
    EXEC sp_FindStringInTable 'Nareshbhai%', 'dbo', 'UserstoClean'; 

SELECT * FROM #VarTemp 

如果我執行單獨

EXEC sp_FindStringInTable 'Nareshbhai%', 'dbo', 'UserstoClean'; 

我越來越

Constitid FirstName LastName email status   pincode 
3151502 Nareshbhai Desai desanar@iit.edu Inactive desai 

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sp_FindStringInTable是

ALTER PROCEDURE [dbo].[sp_FindStringInTable] 
    @stringToFind VARCHAR(100), @schema sysname, @table sysname 
AS 
    DECLARE @sqlCommand VARCHAR(8000) 
    DECLARE @where VARCHAR(8000) 
    DECLARE @columnName sysname 
    DECLARE @cursor VARCHAR(8000) 

BEGIN TRY 
    SET @sqlCommand = 'SELECT * FROM ' + @schema + '.' + @table + ' WHERE' 
    SET @where = '' 

    SET @cursor = 'DECLARE col_cursor CURSOR FOR 
     SELECT COLUMN_NAME 
     FROM ' + DB_NAME() + '.INFORMATION_SCHEMA.COLUMNS 
     WHERE TABLE_SCHEMA = ''' + @schema + ''' 
     AND TABLE_NAME = ''' + @table + ''' 
     AND DATA_TYPE IN (''char'', ''nchar'', ''ntext'', ''nvarchar'', ''text'', ''varchar'')' 

    EXEC (@cursor) 

    OPEN col_cursor  
    FETCH NEXT FROM col_cursor INTO @columnName  

    WHILE @@FETCH_STATUS = 0  
    BEGIN  
     IF @where <> '' 
      SET @where = @where + ' OR' 

     SET @where = @where + ' ' + @columnName + ' LIKE ''' + @stringToFind + '''' 
     FETCH NEXT FROM col_cursor INTO @columnName  
    END  

    CLOSE col_cursor  
    DEALLOCATE col_cursor 

    SET @sqlCommand = @sqlCommand + @where 
    --PRINT @sqlCommand 
    EXEC (@sqlCommand) 
END TRY 
BEGIN CATCH 
    PRINT 'There was an error. Check to make sure object exists.' 
    IF CURSOR_STATUS('variable', 'col_cursor') <> -3 
    BEGIN 
     CLOSE col_cursor  
     DEALLOCATE col_cursor 
    END 
END CATCH 
GO 

Answer 1

，因爲它出現在這裏這是行不通的：

'' SELECT * FROM '+ @schema +'。」 + @table +「其中」'

您正在加載動態SQL生成表中的所有列的列結果。除非所有這些表格明確地只有與您明確定義的相同的10列，否則會中斷。爲什麼需要將表格動態選擇到臨時表中？如果您只想查找具有特定類型數據類型的表並選擇前十個結果，那麼這將起作用。

declare @Temp table (id int identity, val varchar(64)) 

--insert into @Temp 
select distinct 
    'select top 10 * from ' + s.name + '.' + t.name 

from sys.tables t (nolock) 
    join sys.schemas s (nolock) on t.schema_id = s.schema_id 
    join sys.columns c (nolock) on t.object_id = c.object_id 
    join sys.types ty (nolock) on c.system_type_id = ty.system_type_id 
     and ty.name in ('char', 'nchar', 'ntext', 'nvarchar') --etc, if you want to find specific column types listed only 

declare @Current int = 1, @max int, @SQL varchar(max); 

select @Max = max(id) from @Temp 

while @Current <= @Max 
BEGIN 
    select @SQL = val from @Temp where id = @Current 

    exec (@SQL) 

    set @Current += 1; 
END