form1.frm

vb数据库编程资料

VERSION 5.00
Object = "{5E9E78A0-531B-11CF-91F6-C2863C385E30}#1.0#0"; "MSFLXGRD.OCX"
Begin VB.Form Form1 
   Caption         =   "Form1"
   ClientHeight    =   3165
   ClientLeft      =   60
   ClientTop       =   450
   ClientWidth     =   5670
   LinkTopic       =   "Form1"
   ScaleHeight     =   3165
   ScaleWidth      =   5670
   StartUpPosition =   3  '窗口缺省
   Begin VB.Data Data1 
      Caption         =   "Data1"
      Connect         =   "Access"
      DatabaseName    =   "C:\Documents and Settings\tongaihong\桌面\VB数据库程序与数据\08\教学.mdb"
      DefaultCursorType=   0  '缺省游标
      DefaultType     =   2  '使用 ODBC
      Exclusive       =   0   'False
      Height          =   375
      Left            =   600
      Options         =   0
      ReadOnly        =   0   'False
      RecordsetType   =   1  'Dynaset
      RecordSource    =   ""
      Top             =   2640
      Width           =   3255
   End
   Begin MSFlexGridLib.MSFlexGrid MSFlexGrid1 
      Bindings        =   "Form1.frx":0000
      Height          =   1215
      Left            =   120
      TabIndex        =   3
      Top             =   1320
      Width           =   4815
      _ExtentX        =   8493
      _ExtentY        =   2143
      _Version        =   393216
      FixedCols       =   0
   End
   Begin VB.CommandButton Command1 
      Caption         =   "查询"
      Height          =   375
      Left            =   240
      TabIndex        =   2
      Top             =   720
      Width           =   975
   End
   Begin VB.TextBox Text1 
      BeginProperty DataFormat 
         Type            =   1
         Format          =   "yyyy-M-d"
         HaveTrueFalseNull=   0
         FirstDayOfWeek  =   0
         FirstWeekOfYear =   0
         LCID            =   2052
         SubFormatType   =   3
      EndProperty
      Height          =   375
      Left            =   1800
      TabIndex        =   1
      Top             =   120
      Width           =   735
   End
   Begin VB.Label Label1 
      Caption         =   "请输入选课门数："
      Height          =   255
      Left            =   240
      TabIndex        =   0
      Top             =   120
      Width           =   1575
   End
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Private Sub Command1_Click()
 Dim SQLStr As String
 If Len(Trim(Text1.Text)) = 0 Then
    MsgBox ("必须输入选课门数")
    Exit Sub
 End If
 SQLStr = "SELECT 学号,COUNT(*) as 选课门数,AVG(成绩) AS 平均成绩 FROM 成绩表 "
 SQLStr = SQLStr + "  GROUP BY 学号 "
 SQLStr = SQLStr + "HAVING COUNT(*)>" & Text1.Text
 Data1.RecordSource = SQLStr
 Data1.Refresh
End Sub