如何使用textcopy.exe工具对SQL Server中的文本或图像数据进行导入和
导出,你可以在包含标准的SQL Server可执行文件的目录中找到这个工具
（SQL Server 6.5默认在c:\mssql\binn，SQL Server 7.0默认在c:\mssql7\binn
）。
Textcopy 工具在SQL Server的在线手册中没有介绍，不过你可以在命令行中执行
textcopy /? 得到它的描述。下面是这个工具的描述:Copies a single text or
image value into or out of SQL Server. The value
is a specified text or image 'column' of a single row (specified by
the
"where clause") of the specified 'table'.

If the direction is IN (/I) then the data from the specified 'file' is
copied into SQL Server, replacing the existing text or image value. If
the
direction is OUT (/O) then the text or image value is copied from
SQL Server into the specified 'file', replacing any existing file.

TEXTCOPY [/S [sqlserver]] [/U [login]] [/P [password]]
  [/D [database]] [/T table] [/C column] [/W"where clause"]
  [/F file] [{/I | /O}] [/K chunksize] [/Z] [/?]

  /S sqlserver       The SQL Server to connect to. If 'sqlserver' is
not
                     specified, the local SQL Server is used.
  /U login           The login to connect with. If 'login' is not
specified,
                     a trusted connection will be used.
  /P password        The password for 'login'. If 'password' is not
                     specified, a NULL password will be used.
  /D database        The database that contains the table with the
text or
                     image data. If 'database' is not specified, the
default
                     database of 'login' is used.
  /T table           The table that contains the text or image value.
  /C column          The text or image column of 'table'.
  /W "where clause"  A complete where clause (including the Where
keyword)
                     that specifies a single row of 'table'.
  /F file            The file name.
  /I                 Copy text or image value into SQL Server from
'file'.
  /O                 Copy text or image value out of SQL Server into
'file'.
  /K chunksize       Size of the data transfer buffer in bytes.
Minimum
                     value is 1024 bytes, default value is 4096 bytes.
  /Z                 Display debug information while running.
  /?                 Display this usage information and exit.

You will be prompted for any required options you did not specify.

你可以使用下面的存储更简单的使用这个工具:Create PROCEDURE sp_textcopy
(
  @srvname     varchar (30),
  @login       varchar (30),
  @password    varchar (30),
  @dbname      varchar (30),
  @tbname      varchar (30),
  @colname     varchar (30),
  @filename    varchar (30),
  @whereclause varchar (40),
  @direction   char(1))
AS
DECLARE @exec_str varchar (255)
Select @exec_str =
         'textcopy /S ' + @srvname +
         ' /U ' + @login +
         ' /P ' + @password +
         ' /D ' + @dbname +
         ' /T ' + @tbname +
         ' /C ' + @colname +
         ' /W "' + @whereclause +
         '" /F ' + @filename +
         ' /' + @direction
EXEC master..xp_cmdshell @exec_str

下面是一个拷贝图像到SQL Server的pubs数据库的例子,
表名pub_info, 字段名logo，图像文件名picture.bmp，保存到pub_id='0736'记录
sp_textcopy @srvname = 'ServerName',
            @login = 'Login',
            @password = 'Password',
            @dbname = 'pubs',
            @tbname = 'pub_info',
            @colname = 'logo',
            @filename = 'c:\picture.bmp',
            @whereclause = " Where pub_id='0736' ",
            @direction = 'I'

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