列出数据库所有表和字段信息

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") & "]", Cn, 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)