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MSSQL7.0的数据迁移到MySQL上的一种方法_MySQL

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Release: 2016-06-01 13:54:09
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想必大家都很喜欢用Word打字,用Excel进行计算和规划,用PowerPoint作幻灯片进行展示…,但是这只用到了Office系列产品的很少的一部分功能。据调查,绝大部分用户只用到了Office产品的20%的功能,很少有人注意到Visual Basic for Application。实际上,熟悉掌握VBA的功能可以使你的工作事半功倍,尤其对会计、金融等专业来说,作出一套好的宏,几乎可以作到一劳永逸!最近,AutoCAD中也加入了VBA的功能,这不能不说这是一个趋势!
  VBA的功能决不只是让病毒制造者用来制造麻烦的,VBA能被用来制造病毒的同时也正说明了其功能的强大与易用!利用ADO对象,可以很方便的进行数据库操作!下面就是一个简单的数据交换的例子:
  由于ADO对象不直接支持MySQL,所以必须先安装MyODBC, 后者也是一个免费产品,在www.mysql.org上有下载,安装好了MyODBC, 就可以在ODBC数据源管理中配置一个数据源名称,把它指向你想连接的MySQL数据库。代码如下:
  
  Sub connectMySQL()
  '通过MyODBC去连接MySQL数据库,并将Microsoft SQL Server 7
  '的数据转进mysql中
  Dim sConnect As String, sSql As String, i As Long
  Dim cnMSSQL As New ADODB.Connection
  Dim cnMySQL As New ADODB.Connection
  '声明并创建对象 连接
  Dim rs As New ADODB.Recordset '声明并创建对象 记录集
  Dim cm As New ADODB.Command '声明并创建对象 命令
  
  sConnect = "dsn=mysql1" '指定MySQL的数据源名称
  cnMySQL.Open sConnect '连接到 mysql
  
  sConnect="Provider=SQLOLEDB.1;Persist Security Info=False;User ID=sa;pwd=123456;Initial Catalog=softdown;Data Source=ntserver"
  '连接到 ms sql server 7
  cnMSSQL.Open sConnect
  
  'sSql = "create table softinfo (softNum smallint,softname varchar(70),softdesc blob," & _
  "softpath varchar(30),softleng varchar(10),softclass varchar(10),softsugest tinyint(1)," & _
  "softdown smallint(4))" '创建新的MySQL数据表语句
  sSql = "select * from softinfo order by softnum"
  rs.Open sSql, cnMSSQL, 1, 1
  
  While Not rs.EOF
  sSql = "insert into softinfo values (" & Trim(rs(0).Value) & ",'" & Trim(rs(1).Value) & _
  "','" & Trim(rs(2).Value) & "','" & Trim(rs(3).Value) & "','" & Trim(rs(4).Value) & _
  "','" & Trim(rs(5).Value) & "'," & Trim(rs(6).Value) & "," & Trim(rs(7).Value) & ")"
  
  cm.ActiveConnection = cnMySQL
  cm.CommandType = adCmdText
  cm.CommandText = sSql
  cm.Execute
  
  rs.MoveNext
  Wend
  
  rs.Close
  Set rs = Nothing
  
  cnMySQL.Close
  Set cnMySQL = Nothing
  
  cnMSSQL.Close
  Set cnMSSQL = Nothing
  
  End Sub

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