程序思想:用SELECT name From sysobjects WHERE xtype = 'u'得到所有表，然后循环打开表,根据Rs_Colums.Fields(I).Name 得到字段名,FieldType(Rs_Colums.Fields(I).Type) 得到字段类型,Rs_Colums.Fields(I).DefinedSize '宽度

由于Rs_Colums.Fields(I).Type返回类型是数字，程序中写了一个FieldType函数转化成中文类型

Private Sub Command1_Click()
Dim Cn As New ADODB.Connection
Dim Rs_Table As New ADODB.Recordset
Dim Rs_Colums As New ADODB.Recordset

With Cn '定义连接
.CursorLocation = adUseClient
.Provider = "sqloledb"
.Properties("Data Source").Value = "LIHG"
.Properties("Initial Catalog").Value = "NorthWind"
.Properties("User ID") = "sa"
.Properties("Password") = "sa"
.Properties("prompt") = adPromptNever
.ConnectionTimeout = 15
.Open

If .State = adStateOpen Then
Rs_Table.CursorLocation = adUseClient '得到所有表名
Rs_Table.Open "SELECT name From sysobjects WHERE xtype = 'u'",Cn,adOpenDynamic,adLockReadOnly
Rs_Table.MoveFirst
Do While Not Rs_Table.EOF

Debug.Print Rs_Table.Fields("name")
Rs_Colums.CursorLocation = adUseClient
Rs_Colums.Open "select top 1 * from [" & Rs_Table.Fields("name") & "]",adOpenStatic,adLockReadOnly
For I = 0 To Rs_Colums.Fields.Count - 1 ' 循环所有列
Debug.Print Rs_Colums.Fields(I).Name '字段名
Debug.Print FieldType(Rs_Colums.Fields(I).Type) '字段类型
Debug.Print Rs_Colums.Fields(I).DefinedSize '宽度
Next
Rs_Colums.Close
Rs_Table.MoveNext
Loop
Rs_Table.Close
Set Rs_Colums = Nothing
Set Rs_Table = Nothing

Else
MsgBox "数据库连接失败，请找系统管理员进行检查 ！",16,cProgramName
End
End If
End With
End Sub

'*********************************************************
'* 名称：FieldType
'* 功能：返回字段类型
'* 用法：FieldType(nType as integer)
'*********************************************************
Function FieldType(nType As Integer) As String
Select Case nType
Case 128
FieldType = "BINARY"
Case 11
FieldType = "BIT"
Case 129
FieldType = "CHAR"
Case 135
FieldType = "DATETIME"
Case 131
FieldType = "DECIMAL"
Case 5
FieldType = "FLOAT"
Case 205
FieldType = "IMAGE"
Case 3
FieldType = "INT"
Case 6
FieldType = "MONEY"
Case 130
FieldType = "NCHAR"
Case 203
FieldType = "NTEXT"
Case 131
FieldType = "NUMERIC"
Case 202
FieldType = "NVARCHAR"
Case 4
FieldType = "REAL"
Case 135
FieldType = "SMALLDATETIME"
Case 2
FieldType = "SMALLMONEY"
Case 6
FieldType = "TEXT"
Case 201
FieldType = "TIMESTAMP"
Case 128
FieldType = "TINYINT"
Case 17
FieldType = "UNIQUEIDENTIFIER"
Case 72
FieldType = "VARBINARY"
Case 204
FieldType = "VARCHAR"
Case 200
FieldType = ""
End Select
End Function

此程序只是一个雏形，可以在此基础上开发成一个工具使用

本程序在：VB 6.0 ，sql SERVER 2000下运行通过

注程序中须引用ActiveX Data Objects (ADO)