/*
存储过程名称：导出数据到Excel
功能描述：导出数据到Excel

EXEC ExportToExcel @server = '.',
                   @uname = 'sa',
                   @pwd = '',
                   @QueryText = 'SELECT * FROM dldata..bbbbbb',
                   @filename = 'd:\ImportToExcel.xls'
*/

IF OBJECT_ID('ExportToExcel') IS NOT NULL DROP PROC ExportToExcel
GO

CREATE PROCEDURE ExportToExcel (
  @server sysname = null,
  @uname sysname = null,
  @pwd sysname = null,
  @QueryText varchar(200) = null,
  @filename varchar(200) = 'd:\ImportToExcel.xls'
)
AS
DECLARE @SQLServer int, --SQLDMO.SQLServer对象
        @QueryResults int, --QueryResults对象
        @CurrentResultSet int,
        @object int, --Excel.Application对象
        @WorkBooks int,
        @WorkBook int,
        @Range int,
        @hr int,
        @Columns int,
        @Rows int,
        @indColumn int,
        @indRow int,
        @off_Column int,
        @off_Row int,
        @code_str varchar(100),
        @result_str varchar(255)

IF @QueryText IS NULL
BEGIN
   PRINT 'Set the query string'
   RETURN
END

--设置服务器名为本地服务器(@@servername返回运行SQL Server的本地服务器名称)
IF @server IS NULL SELECT @server = @@servername

--设置用户名为当前系统用户名(使用SYSTEM_USER返回当前系统用户名)
IF @uname IS NULL SELECT @uname = SYSTEM_USER

SET NOCOUNT ON

--创建SQLDMO.SQLServer对象
EXEC @hr = sp_OACreate 'SQLDMO.SQLServer', @SQLServer OUT
IF @hr <> 0
BEGIN
   PRINT 'error create SQLDMO.SQLServer'
   RETURN
END

--连接到SQL Server系统
IF @pwd IS NULL
BEGIN
   EXEC @hr = sp_OAMethod @SQLServer, 'Connect', null, @server, @uname
   IF @hr <> 0
   BEGIN
      PRINT 'error Connect'
      RETURN
   END
END
ELSE
BEGIN
   EXEC @hr = sp_OAMethod @SQLServer, 'Connect', null, @server, @uname, @pwd
   IF @hr <> 0
   BEGIN
      PRINT 'error Connect'
      RETURN
   END
END

--The ExecuteWithResults method executes a Transact-SQL command batch
--returning batch result sets in a QueryResults object
SELECT @result_str = 'ExecuteWithResults("' + @QueryText + '")'
EXEC @hr = sp_OAMethod @SQLServer, @result_str, @QueryResults OUT
IF @hr <> 0
BEGIN
    PRINT 'error with method ExecuteWithResults'
    RETURN
END

--The CurrentResultSet property controls access to the result sets of a QueryResults object
EXEC @hr = sp_OAMethod @QueryResults, 'CurrentResultSet', @CurrentResultSet OUT
IF @hr <> 0
BEGIN
   PRINT 'error get CurrentResultSet'
   RETURN
END

--The Columns property exposes the number of columns contained
--in the current result set of a QueryResults object
EXEC @hr = sp_OAMethod @QueryResults, 'Columns', @Columns OUT
IF @hr <> 0
BEGIN
   PRINT 'error get Columns'
   RETURN
END

--The Rows property returns the number of rows in a referenced
--query result set or the number of rows existing in a table
EXEC @hr = sp_OAMethod @QueryResults, 'Rows', @Rows OUT
IF @hr <> 0
BEGIN
   PRINT 'error get Rows'
   RETURN
END

--创建Excel.Application对象
EXEC @hr = sp_OACreate 'Excel.Application', @object OUT
IF @hr <> 0
BEGIN
   PRINT 'error create Excel.Application'
   RETURN
END

--获得Excel工作簿对象
EXEC @hr = sp_OAGetProperty @object, 'WorkBooks', @WorkBooks OUT
IF @hr <> 0
BEGIN
   PRINT 'error create WorkBooks'
   RETURN
END

--在工作簿对象中加入一工作表
EXEC @hr = sp_OAGetProperty @WorkBooks, 'Add', @WorkBook OUT
IF @hr <> 0
BEGIN
   PRINT 'error with method Add'
   RETURN
END

--Range对象(A1单元格)
EXEC @hr = sp_OAGetProperty @object, 'Range("A1")', @Range OUT
IF @hr <> 0
BEGIN
   PRINT 'error create Range'
   RETURN
END

SELECT @indRow = 1
SELECT @off_Row = 0
SELECT @off_Column = 1

WHILE (@indRow <= @Rows)
BEGIN
   SELECT @indColumn = 1
   WHILE (@indColumn <= @Columns)
   BEGIN
      --The GetColumnString method returns a QueryResults object result set member converted to a String value
      EXEC @hr = sp_OAMethod @QueryResults, 'GetColumnString', @result_str OUT, @indRow, @indColumn
      IF @hr <> 0
      BEGIN
         PRINT 'error get GetColumnString'
         RETURN
      END

      EXEC @hr = sp_OASetProperty @Range, 'value', @result_str
      IF @hr <> 0
      BEGIN
         PRINT 'error set value'
         RETURN
      END

      EXEC @hr = sp_OAGetProperty @Range, 'Offset', @Range OUT, @off_Row, @off_Column
      IF @hr <> 0
      BEGIN
         PRINT 'error get Offset'

         RETURN
      END

      SELECT @indColumn = @indColumn + 1

   END

   SELECT @indRow = @indRow + 1
   SELECT @code_str = 'Range("A' + LTRIM(str(@indRow)) + '")'
   EXEC @hr = sp_OAGetProperty @object, @code_str, @Range OUT
   IF @hr <> 0
   BEGIN
      PRINT 'error create Range'
      RETURN
   END

END

SELECT @result_str = 'exec master..xp_cmdshell ''del ' + @filename + ''', no_output'
EXEC(@result_str) --如果存在@filename文件，则先删除
SELECT @result_str = 'SaveAs("' + @filename + '")'
EXEC @hr = sp_OAMethod @WorkBook, @result_str
IF @hr <> 0
BEGIN
    PRINT 'error with method SaveAs'
    RETURN
END

EXEC @hr = sp_OAMethod @WorkBook, 'Close'
IF @hr <> 0
BEGIN
    PRINT 'error with method Close'
    RETURN
END

EXEC @hr = sp_OADestroy @object
IF @hr <> 0
BEGIN
    PRINT 'error destroy Excel.Application'
    RETURN
END

EXEC @hr = sp_OADestroy @SQLServer
IF @hr <> 0
BEGIN
    PRINT 'error destroy SQLDMO.SQLServer'
    RETURN
END
GO