ms-access

问题 As per a suggestion in the comments from here, I am starting a thread to learn the reference technique for passing values and variables from form to form, also discussed here and here. As a side note, to the best of my knowledge, it's not the technique referred to here and here. Those previous questions demonstrated that the following code in the called form, sets up this technique. Dim prevForm As Form Private Sub Form_Load() Set prevForm = Screen.ActiveForm End Sub For an Access beginner

问题 I have a query which gives me the sum and counts per category. It is sorted descending. The first value is the max value, so the highest sum and highest count. SELECT SUM(score) AS calcsum, category INTO newdataset FROM table1 INNER JOIN table2 ON table1.keys =table2.ID WHERE table2.filter = "Value" GROUP BY category ORDER BY SUM(score) DESC; resp. SELECT count(*) as counted, category INTO newdataset FROM table1 INNER JOIN table2 ON table1.keys =table2.ID WHERE table2.filter = "Value" GROUP

问题 I created an MS Access table using the following code: tbl := Database.CreateTableDef('English', 0, '', ''); try fld := tbl.CreateField('ID', dbLong, 0); fld.Attributes := dbAutoIncrField + dbFixedField; tbl.Fields.Append(fld); fld := tbl.CreateField('Content', dbText, 255); fld.Required := true; fld.AllowZeroLength := false; tbl.Fields.Append(fld); Database.TableDefs.Append(tbl); idx := tbl.CreateIndex('PrimaryKey'); idx.Fields.Append(idx.CreateField('ID', EmptyParam, EmptyParam)); idx

问题 I've just finished my project in Visual Basic 2010. I'm using MS Access as my database. I've saved it in my documents and connected to my project. I didn't copy it to debug. Now when I create an installer and install it to another computer, an error occurs because it couldn't find my database. Manually copying my database to the other computer solves the problem. c:\users\users\documents\database.accdb The problem how could I create an installer including my database? And where should I put

问题 I've just finished my project in Visual Basic 2010. I'm using MS Access as my database. I've saved it in my documents and connected to my project. I didn't copy it to debug. Now when I create an installer and install it to another computer, an error occurs because it couldn't find my database. Manually copying my database to the other computer solves the problem. c:\users\users\documents\database.accdb The problem how could I create an installer including my database? And where should I put

问题 I've just finished my project in Visual Basic 2010. I'm using MS Access as my database. I've saved it in my documents and connected to my project. I didn't copy it to debug. Now when I create an installer and install it to another computer, an error occurs because it couldn't find my database. Manually copying my database to the other computer solves the problem. c:\users\users\documents\database.accdb The problem how could I create an installer including my database? And where should I put

问题 I've been researching this problem for days and have decided to ask this question here to see if anyone can help point me in the right direction. I'm trying to populate combo boxes in my Netbeans 8.0.2 program with data from an MS Access 2013 table. I'm using the most recent "Ucanaccess" with all of its necessary components to get the connection between the two, and from what I can tell the connection is good. However, when I run the program, it pops up an error exception message, reading:

问题 In the process of answering this question, I wrote a simple function to test whether an MS Access table contained all fields in a supplied array: Function ValidateFields(strTbl As String, arrReq As Variant) As Boolean Dim fld Dim fldTmp As Field On Error GoTo err For Each fld In arrReq Set fldTmp = CurrentDb.TableDefs(strTbl).Fields(fld) Next fld ValidateFields = True err: Exit Function End Function ?ValidateFields("TempTable", Array("Field1", "Field2", "Field3")) False This performs as

问题 Already have the DataTable populated but need to dump its entire table contents into an Access database. Using (conn) If conn.State <> ConnectionState.Open Then conn.Open() Dim adapter As OleDbDataAdapter = New OleDbDataAdapter("SELECT * FROM " & sMdbTableName, conn) adapter.InsertCommand = New OleDbCommand("INSERT INTO " & sMdbTableName & " SELECT * FROM " & sMdbTableNameSource & ";", conn) adapter.TableMappings.Add(sMdbTableName, ds.Tables.Item(sMdbTableNameSource).ToString) adapter.Update

问题 UPDATED QUESTION: I have Update sheet, this sheet contains unique ID that matched the access database ID, I'm trying to update the fields using excel values in "Update" sheet. The ID is in the Column A the rest of the fields are stored from Column B to R. I'm trying to achieve the below, As follows: Update the record(values from Column B to R) if Column A (ID) matched existing Access database ID. Then add text in Column S "Updated" If the Column A (ID) did not found any match in the existing