ms-access-2010

问题 I am having an issue with an SQLite database. I am using the SQLite ODBC from http://www.ch-werner.de/sqliteodbc/ Installed the 64-bit version and created the ODBC with these settings: I open my Access database and link to the datasource. I can open the table, add records, but cannot delete or edit any records. Is there something I need to fix on the ODBC side to allow this? The error I get when I try to delete a record is: The Microsoft Access database engine stopped the process because you

问题 Im working on a project. Our system is Hotel Reservation. In VB it says that it added in my database but then when I check my database there is none. What is the problem btw Here's the code: Public Class RegistrationForm Private Sub btnNext_Click(sender As Object, e As EventArgs) Handles btnNext.Click qry = "INSERT INTO tblGuest(GuestName, Gender, Address)VALUES('" & txtName.Text & "','" & txtGender.Text & "','" & txtAddress.Text & "');" cmd = New OleDb.OleDbCommand(qry, con) dr = cmd

问题 How do i prevent a button to continue when there are an errors appears? I already can check the availability of username in database, but even though the username is not exists in the database, the "Check Availability" button still recognized it as exists. Here is the screenshots: Image above show the username "Seranne" already exists, but in the database, Seranne is not exists. Here is the code: else if (textBox1.Text.Length > 0 && textBox2.Text == textBox3.Text) { label5.Visible = false;

问题 UserID UserName Password 1 abc 123 10 xyz 456 3 mno 254 SELECT MAX(UserId) AS UserId FROM UserLogin When I run this query it gives me 3 instead of 10 All columns are TEXT datatype 回答1: Your query is returning 3 because it is the larger value considering lexicographic order (anything starting with 3 is considered greater than anything starting with 1 , just like something starting with b is greater than anything starting with a ). Use the VAL function to convert the TEXT columns into numeric

问题 I'm creating a table B from an exisitng table A. In the table A I have a column ValDate which is varchar and contains Date. When I try to create the table B I have a function used in the query as given below and I get a conversion error. Table A contains null values as well. MS Access: ((DateDiff("d",Date(),format(Replace(Replace([Table A].ValDate,".","/"),"00/00/0000","00:00:00"),"dd/mm/yyyy")))>0)). Tables were in MS Access and are being migrated to SQL Server 2012. SQL Server: ((DATEDIFF

问题 Given a complex query for a beginner in database, how can I convert this access sql to mysql? Here is the MS ACCESS query: SELECT tblSections.[Course Code], tblSections.Section, tblSections.Day, tblSections.[Start Time], tblSections.[End Time], tblSections.Room, tblProfessors.[Last Name], tblProfessors.[First Name], Count(tblStudentsCoursesSections.[Student ID]) AS Enrolled, ([tblCourses].[Max])-[Enrolled] AS Slots FROM tblCourses INNER JOIN (tblStudentsCoursesSections RIGHT JOIN

问题 I'm getting a compile error: "Argument not optional" Basically in this code, I'm trying to do a around the table style auto-assigning. When the code is called, it starts at AssignNullProjects() and when I get the error, GetNextAssignee is highlight in the part " & GetNextAssignee & " I'm not really sure how to fix it, here's my full code below: Public Function AssignNullProjects() As Long Dim db As dao.Database Dim rs As dao.Recordset Dim strSQL As String Set db = CurrentDb strSQL = "SELECT

问题 I have a database where there are 2 fields similar (that match another table) and then the third is unique. I want to convert the table to have the 3rd unique value listed in columns instead of a separate record. I.E. 5/1/2013 A321 1 $1,120 5/2/2013 A325 1 $2,261 5/1/2013 A321 2 $2,120 will convert to 5/1/2013 A321 $1,120 $2,120 5/2/2013 A325 $2,261 I could create separate queries for each value in column 3 and then have another query that joins them in the fashion I want them to but I was

问题 Hopefully this will make sense...I have a table in Access 2010 that contains a list of suppliers and their point of contacts at the supplier and where I work. The POCs vary in number, anywhere from 1-4 up to this point. The table is set up so each POC is on a separate line. The supplier could have one contact but work could have three different contacts and vice versa. What I want to happen is when I select a value from a combobox on a form, all the related POCs need to be shown instead of

问题 I have a table that has information structured like this: ID Points Name School 1 123 James A 2 534 Henry B 3 56 Henry B 4 153 Chris B 5 95 Chris B 6 83 Chris B 7 421 James A And I need to get out of a query the rows that have the same name, but only the highest points for each like this: ID Points Name School 7 421 James A 2 534 Henry B 4 153 Chris B Any ideas on how this could be accomplished with a query? I've spent way too much time trying to figure this out. 回答1: select name,school,max