（转）列出SQL SERVER 所有表、字段定义，类型，长度，一个值等信息（另一种方法）

列出SQL SERVER 所有表、字段定义，类型，长度，一个值等信息

并导出到Excel 中

-- ======================================================

-- Export all user tables definition and one sample value

-- jan-13-2003,Dr.Zhang

-- ======================================================

在查询分析器里运行：

SET ANSI_NULLS OFF
GO
SET NOCOUNT ON
GO

 

SET LANGUAGE 'Simplified Chinese'
go
DECLARE @tbl nvarchar(200),@fld nvarchar(200),@sql nvarchar(4000),@maxlen int,@sample nvarchar(40)

 

SELECT d.name TableName,a.name FieldName,b.name TypeName,a.length Length,a.isnullable IS_NULL INTO #t
FROM  syscolumns  a,  systypes b,sysobjects d 
WHERE  a.xtype=b.xusertype  and  a.id=d.id  and  d.xtype='U'

 

DECLARE read_cursor CURSOR
FOR SELECT TableName,FieldName FROM #t

 

SELECT TOP 1 '_TableName                     ' TableName,
            'FieldName                      ' FieldName,'TypeName             ' TypeName,
            'Length' Length,'IS_NULL' IS_NULL,
            'MaxLenUsed' AS MaxLenUsed,'Sample Value          ' Sample,
             'Comment   ' Comment INTO #tc FROM #t

 

OPEN read_cursor

 

FETCH NEXT FROM read_cursor INTO @tbl,@fld
WHILE (@@fetch_status <> -1)  --- failes
BEGIN
       IF (@@fetch_status <> -2) -- Missing
       BEGIN
              SET @sql=N'SET @maxlen=(SELECT max(len(cast('+@fld+' as nvarchar))) FROM '+@tbl+')'
              --PRINT @sql
              EXEC SP_EXECUTESQL @sql,N'@maxlen int OUTPUT',@maxlen OUTPUT
              --print @maxlen
              SET @sql=N'SET @sample=(SELECT TOP 1 cast('+@fld+' as nvarchar) FROM '+@tbl+' WHERE len(cast('+@fld+' as nvarchar))='+convert(nvarchar(5),@maxlen)+')'
              EXEC SP_EXECUTESQL @sql,N'@sample varchar(30) OUTPUT',@sample OUTPUT
              --for quickly  
              --SET @sql=N'SET @sample=convert(varchar(20),(SELECT TOP 1 '+@fld+' FROM '+
                     --@tbl+' order by 1 desc ))' 
              PRINT @sql
              print @sample
              print @tbl
              EXEC SP_EXECUTESQL @sql,N'@sample nvarchar(30) OUTPUT',@sample OUTPUT
              INSERT INTO #tc SELECT *,ltrim(ISNULL(@maxlen,0)) as MaxLenUsed,
                     convert(nchar(20),ltrim(ISNULL(@sample,' '))) as Sample,' ' Comment FROM #t where TableName=@tbl and FieldName=@fld
       END
       FETCH NEXT FROM read_cursor INTO @tbl,@fld
END

 

CLOSE read_cursor
DEALLOCATE read_cursor
GO

 

SET ANSI_NULLS ON
GO
SET NOCOUNT OFF
GO
select count(*)  from #t
DROP TABLE #t
GO

 

select count(*)-1  from #tc

 

select * into ##tx from #tc order by tablename
DROP TABLE #tc

 

--select * from ##tx

 

declare @db nvarchar(60),@sql nvarchar(3000)
set @db=db_name()
--请修改用户名和口令 导出到Excel 中
set @sql='exec master.dbo.xp_cmdshell ''bcp ..dbo.##tx out c:/'+@db+'_exp.xls -w -C936 -Usa -Psa '''
print @sql
exec(@sql)
GO
DROP TABLE ##tx
GO