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我正在尝试将数据从一个表（或存储过程）插入临时表。临时表列计数与源表列计数不匹配。我想从开始列将源数据插入临时表，其余列将空字符串列。

这意味着如果Temp表有 10 列而源表只有 3 列，则将前 3 列插入临时表，其余 7 列将为空或 null。

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

如果我单独执行

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

我正进入（状态

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

错误是

有一个错误。检查以确保对象存在。（0 行受影响）

消息 0，级别 11，状态 0，行 0
当前命令发生严重错误。结果，如果有的话，应该丢弃。

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
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1 回答 1

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这将不起作用，因为它显示在此处：

''SELECT * FROM' + @schema + '.' + @table +'在哪里''

您正在加载动态 sql 以在表中生成 ALL COLUMNS 的列结果。除非所有这些表都特别具有与您明确定义相同的 10 列，否则这将中断。为什么需要将表动态选择到临时表中？如果您只想查找具有某种数据类型的表并选择前十个结果，那么这将起作用。

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
于 2013-01-16T23:30:47.550 回答