How to list values from MySQL table in VB.Net - mysql

I would have posted some code, however I completely have no idea where to start!
So I want my employees to use my VB application to request holiday (that bit is done). But now I want them to see all the holidays they have requested in a list.
They each have their own account and their username is present on the holiday table in the database.
It must be able to show all holidays they have booked and not just one, preference is in a list form. I'd also like to exclude 1 column from showing.
Is this possible?
I really appreciate your help in advance.

Related

Is there a easy way to compile a list of tables and forms in the database

I am creating a DBA documentation form in the database to help track changes made within the database. Currently, my form is pretty simple it has an ID, date field, table/ form name, control name, change made, and why. I want to add a validation rule or a dropdown that has a list of the tables and forms in the database but I am unsure of how to do this. Does anyone know of an easy way to do this? I want to generate a report that lists the changes made to a form/ table so it is crucial that the names are spelled right.
I found an answer but I will leave the question up in case others have a similar question. I used the following query to generate a list of forms.
Select distinctRow Name
From MSysObjects
Where Type = -32768
Order By Name

Access 2010 update date field based on another field

I'm relatively new to Access and VBA but I have managed to get some basic VBA tricks working in both Access and Excel. Now I've got a challenge that I can't seem to crack. I'm building a database to track maintenance of a small trucking fleet. I've got most of the tables and forms I need to do the basic tracking and management of equipment and maintenance in place.
One of the things we're tracking is called PM's which stands for preventative maintenance (lube jobs and oil changes). We do those on calendar intervals for trailers and mileage intervals for tractors. Right now, I'm trying to get the calendar tracked equipment working. I've a table called tblEquipmentMaster which is where all the specifics for each piece of equipment is kept (make, model, year, VIN, etc) and that table has a field called LastPMDate. All the maintenance records go in two other tables, tblMaintenance which records the unit number, vendor, invoice date and invoice amount and tblMaintenanceDetails which records the each line item of work that was performed on the unit (i.e. replaced water pump, replaced headlight etc).
The maintenance details table also contains a drop down list of standard maintenance codes to allow for easier searching of certain maintenance items later. One of those codes is PM. I also have several forms built to interact with these tables including a data entry form for adding new maintenance records.
What I'm trying to accomplish is to have the LastPMDate field for any unit number in tblEquipmentMaster automatically update to match the InvoiceDate field in tblMaintenance anytime an invoice is entered for that unit number which has a line item containing the code PM.
I've tried building an update query to do this but in addition to changing the LastPMDate field like I want it to, it also ends up changing the invoice dates for all previous PM invoices to the date of the last invoice which contained a PM. Not good.
So my question is, would an update query be the best way to do this or would I be better off with some sort of VBA solution? I have an add record button on my maintenance invoice data entry form which users use as a save record/clear form button when all the info for an invoice has been entered. I'm thinking some VBA code tied to the on_click of that button which would look at the invoice you just added, determine if it contains the PM maintenance code, then update LastPMDate field for that unit number with invoice date from that invoice would be a good way to do it but I honestly have no idea what functions or methods I'd need to get that to work.
Any insights or suggestions appreciated.
It's very hard to follow the flow of what you are describing, even if I have experience of PM and AM (Autonomous maintenance).
What is lacking is the relations between the three tables.
Nevertheless I prefer VBA solutions (maybe because I started programming when everything had to be written...). With VBA you can finely control your workflow.
If I understood well the 1st table is tblMaintenance in which you have the Invoice data.
Then you should have to scan the tblMaintenanceDetails to find the list of PMs and filter the tblEquipmentMaster with current PM value to update the LastPMDate with the date of the 1st table.
Did I succeed in providing you an idea to solve your problem?
Let me know.

The best way to manage database (ACCESS)

What is the best way to organize a big database.
The way it works is that only I am allowed to touch or modify the database but interns help sometimes to collect data, we used to have the whole system excel based, back than we had the macro which by choosing 2 files it will integrate and mark in colors the changes.
How can I create something friendly to use which will update by pressing a button and also will show changes!! I am familiar with the update query, however:
it doesn’t track any changes.
I want to know other options.
To sum up the way of processing is:
I have the database and I need to split some data to smaller files so other employees will work on.
Then I will collect the files and integrate with the existing database, but since we are all human mistakes can happened that’s why I want to be able to track easily changes.
The updates are going to happen often. When I will give the intern a temp. table The possible changes are for example: address, phone number, price, they will do those researches based on current data which they will find online which information has been changed, and they will change the info which is on the temp. table, That is why I want to be able to know what exactly did they found out. Lets say if Product A (product ID1234) used to cost 10$ and today its 12$ from the same supplier. I just want to know and to see that the price for product ID1234 has been changed. Not only to have it updated to the back end database. For quality assurance I need to track which new input they did in relation to the product ID. (some times input by someone else which was done in wrong format or wrong column could affect big time on the quality of the reports)
So this was the explanation for what I need the reports
So in order to make those temp. tables, I want to create a form for it that by choosing region, category etc. and then clicking on a button it will automatically select the relevant records from the database, create a new table/access-file and then copy the selected records to the temp. table. So someone else could work on it...
Next thing is that it would be nice to know how can I create a template for tables, by template I mean to standardize by validation rules. some fields I'd like to have dropbox menu, some fields ready mask for phone number.... etc.
Final part, after they made the changes and saved the file (the temp. table which they were working on), I want to be able to update the back-end database via clicking on a button...
Looking forward to get the best solution!
Thanks in advance J
Michael
Okay for the temp tables thing:
why not split your database in a backend part (having all the tables) and a frontend part which contain the forms and tables the interns need? I'm guessing mostly it is going to be the same so you can even create multiple different frontend's to give to different interns incase they need other tables. There are a lot of articles out there about splitting a database and linking tables.
Then the thing about the record changes not sure is this is what your looking for but it could help, i haven't used it myself so not sure what it exacly does. But this may help you a bit.
http://support.microsoft.com/kb/197592
I would consider taking a look at the BeforeUpdate event for the form. You can trap the old and new values of textboxes if the form is bound to a table. You could loop through all the controls on your form and check for Me.Control <> Me.Control.OldValue. If they don't match, write both values to an auditing table so you can go back and check whenever you want to. I would include the following fields in your auditing table:
ChangeDate
TableName
ControlName
OldValue
NewValue
Then you can query that table any time you want to see what has changed.

How can I have a database table with only one time for each day?

Hi I am developing a Taxreturn Program in Java language and is my first time I am developing a program with database. I have three Forms which means I need three tables in my database where I am going to store information of each form. My first Form is for customers the second is for bookings and the third is for tax records I have successful make the customer form work with the database but i got stuck in the booking form as i need the correct syntax.
in my booking table i need to store the date, time as Is logical I have to have only one booking time for each day how can i do that. I will appreciate any help thanks
It depends on the type of the field.
If field is Date, some implementations assume the time is 00:00:00 ... Many of them simply store the exact timestamp, but truncate and give you the value, as required.
Best way to do it is when inserting, manually specify the exact time yourself. This is the most cross-database way of doing things.

Access 2007 Report: Code or no Code?

I've been researching around a lot and I just can't find something I think should be very easy to someone with very little experience with Access 2007.
I am trying to create a report. The db has two tables. One with account, name and address. The other has account and product Id. The tables are joined on account. One customer/acct can have several product Ids.
I need to create a mailing that will have rich text in the body and list per account/customer the products they have.
I keep running into having the rich text(body of letter) showing each time the product Id is listed. Do I need to create something in code first? Like an array with the product Id so I can have it as one variable per account/customer? If so, where should I create this? In code, macro or expression builder?
Getting kind of frustrated I guess. I'm tempted to write something in C# as I have enough knowledge I think to make this happen, but I prefer to keep it all in Access. I might also be asked to keep it in access and c# is not what is used currently where this project is being built.
Rogue:
You should use a page header on your report containing the formatted customer/account info, probably: "Dear Account:... " You're treating each id as a separate form letter. What you want is each customer to get the letter via treating the customer as a page header and group footer, while the id's go into the details.
Then, the one or more products would be in the detail section.
The closing of the letter would be in the group (customer info) footer: "We look forward blah., blah sincerely.....
Then, set the property of the group footer to "force new page after section", meaning when you get to a new customer, eject to a blank page and start printing another letter.
Hope this helps.