ms-access

问题 Here is my code, but its the other way around, it commits changes to the datagridview when the database is updated. Imports System Imports System.Data Imports System.Data.OleDb Imports System.Windows.Forms Public Class Form1 Inherits System.Windows.Forms.Form Private bindingSource1 As New BindingSource() Private dataAdapter As New OleDbDataAdapter() <STAThreadAttribute()> _ Public Shared Sub Main() Application.Run(New Form1()) End Sub Private Sub Form1_Load(ByVal sender As Object, ByVal e As

问题 This question already has an answer here : Closed 7 years ago . Possible Duplicate: How to convert Java TimeStamp into ms access Date? I would like to insert a java Timestamp into an msaccess database but I am getting an error which is listed below. The ms-access field has been set to a DATE datatype. Any advise would be deeply appreciated. Thanks Here's my DAO class method: public void addSale(String saleDetails, String saleTotal, Timestamp saleTimestamp) throws ClassNotFoundException,

问题 Apologies for posting this but although there are a few examples on the site, I just can't get mine to work. So I have two tables as follows: A Telephony table ID | Name | GradeID 1 Richard 1 2 Allan 1 3 Peter I also have a Grade table: ID | Name 1 1 2 2 3 3 4 4 5 5 Anyway I'm trying to use COUNT() and LEFT JOIN to find out the number of times each grade is found in the Telephony table, including returning any which are 0, by using the following query: SELECT telephony.GradeID, COUNT(*) AS

问题 I have a column that has data, such as year(date) or date-365 . How do I use this text as code, not as text? Meaning, I'd like to be able to do something like me.ProjectName="ddddd " & MyColumnWithCode and get ddddd 2017 or ddddd 10/21/2016 I did google in every way I could think of and didn't get anything. 回答1: You can use: Me.ProjectName="ddddd " & Eval(MyColumnWithCode) but not with your present code. It has to read: Year(Date()) Date()-365 回答2: Simply write dddd = sheets("Sheet1").range(

问题 I'm connecting to an MS Access database from an external .Net application. I need to use SQL in order to upgrade the schema of the database. Part of the upgrade requires renaming a table that is part of a 1-to-many relationship. I understand that it is not possible to actually rename a table in MS Access using SQL. My research has led me to the following solution. SELECT * INTO OldTableName FROM NewTableName DROP TABLE OldTableName This appears to work correctly for tables that are not part

问题 Merged with Error With Dynamically Created SQL Insert statement. What's wrong with my following sql statement? (oledb) I get a 'Syntax error in UPDATE statement.' "UPDATE LogIn SET Username='" + EditUsernameTextBox.Text + "', Password='" + EditPasswordTextBox.Text + "' WHERE (ID =" + IDTextBox.Text + ")"; 来源： https://stackoverflow.com/questions/4987220/sql-update-statement-whats-wrong

问题 Website user can enter search criteria to query orders. User, States, Status, OrderID, etc. Website communicates with API. Query parameters are in the header, so I assume they come in as strings. API communicates with Access via Dapper. For some criteria, they can send multiple values. So I want to use an "IN" clause. where UserID in (150, 3303, 16547) Dapper handles this nicely. connection.Query<int>("select * from table where Id in @Ids", new { Ids = new int[] { 1, 2, 3 } }); This works in

问题 I have the following two tables of data: +----------+------+--------+--+---------------+-------+------------+--+--------+--------+-----------------------------+ | stat_atp | | | | tblTourns_atp | | | | Output | | | +----------+------+--------+--+---------------+-------+------------+--+--------+--------+-----------------------------+ | ID_T | FS_1 | FSOF_1 | | ID_T | ID_Ti | DATE | | ID_T | OUTPUT | Rationale | | 1 | 20 | 40 | | 1 | 1 | 01/01/2019 | | 1 | 50% | ID_T "1" | | 2 | 30 | 100 | | 2

问题 To reproduce do this steps. You only need the visual designer. create a simple table: (ID,txt) insert some records for testing create a form and use the table as datasource insert controls for ID, txt insert a listbox and choose option 3: The form must display the record that is choosen in the listbox Now select a record other than the first one. You have to watch carefully. The form displays the tables first record for a very short time, before the choosen record is displayed. Why? How can I

问题 I have an Access database where I want to store the contacts in a company: In this database I have a table named "users" where I keep the users which will have access to the database. In the main table, named "contacts", two of my fields "insert_user" and "contact_user" refer to the user who entered the contact information and the user who actually made the contact. The way I am thinking it, I will have to set both of the fields as foreign keys to the same table/field, namely "users"/