I have encountered a table with five fields refering to a customer list. The fields (c1, c2, etc..) are id's of the customer in the other table. Need a SQL statement that will resolve the customer names into a report with on line and the five entires. Example:
Table1
ID Description C1 C2 C3
1 PartyGroup 2 3 1
2 BeerFolk 1 0 2
[Code].....
I am looking to write my own media library and was wondering are there any free .Net APIs out there to identify a product based on a given barcode? As a secondary point are there .Net APIs to return cover art for books, CD, games etc based on a barcode.
View 3 Repliesi have six textboxes from which the user can query the database. Now the user can decide to fill all the fields and query this i have done using AND OR in the sql syntax but the problem is when he decides to leave some blank my program is throwing an exception how can i skip the blank fields and only execute the WHERE clause for the filled boxes.
View 6 RepliesI'm not sure how to do the following (in VB.NET), I'm hoping you will give me some insight or examples on how it can be done. My database is an SQL one.I have an assets table, which in it has the amount, growth percentage, income percentage. There are multiple assets per client.
I need to get the amount, growth and income into three separate boxes or variables and I'm not quite sure how to do this. The only other problem is that there would be two or three rows returned also, which need to have those three variables or textboxes again.
So for x amount of rows, I need 3 variables which the amount, growth and income will go into.
The reason I need everything into variables is that I can't find an effective way of showing each assets growth over x amount of years and the income it will produce into a data grid view. I'm able to do it if I specify what the growth and income are on the form, but not through the query.
I'm trying to figure out how to get a query for multiple columns in my dataviewgrid.. So far i havn't even been able to make a single column query work, when i search something in First_Name for example, it returns nothing. ive used query builer, ive written the code myself, nothing seems to work.
View 3 RepliesI have a report that I want to filter using a From Date Text Box (which is a string) and a To Date Text Box (which is a string) so the user will insert a start date and and end date to filter the report, how would I do that? This is what I have:
Try
Me.FuelTableAdapter.FillByDate(Me.ShuttleRunsDataSet.Fuel, FromTextBox.Text &
ToTextBox.Text)
[code]....
how to select multiple table in vb2010? i trying to create a login so i need to retrieve the data in 3 different tables in one database i have a code but not work.[code]
View 2 RepliesI am trying to link to a Access database at runtime using a SELECT FROM WHERE query, which I can do but.......
with the WHERE part I want to select several conditions, 4 actually and it is not working, what am I doing wrong?
Here is my code,
Dim con As OleDbConnection = New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=V:GYMDBFLineProdSanderProduction.mdb")
[Code]....
i am trying to query multiple xml files automatically in order to get a specific data for each xml files. I have create a code but it only query one file at the time. Below is the code that i have created.
Imports System.Xml
Imports System.IO
Module ParsingUsingXmlTextReader
[Code]....
I have an assets table, which in it has the amount, growth percentage, income percentage. There are multiple assets per client.
I need to get the amount, growth and income into three separate boxes or variables and I'm not quite sure how to do this. The only other problem is that there would be two or three rows returned also, which need to have those three variables or textboxes again. So for x amount of rows, I need 3 variables which the amount, growth and income will go into.
The reason I need everything into variables is that I can't find an effective way of showing each assets growth over x amount of years and the income it will produce into a data grid view. I'm able to do it if I specify what the growth and income are on the form, but not through the query.
how to store or return multiple queries result values into multiple variables.. I'm using a query that return 4 columns but how to.. individual store those results into 4 separate variables.. here is my code
Private Sub FrmAlumnos_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
txtCurrentUser.Text = Login.txtUser.Text
Dim strsql As String
[code]....
I have a stored procedure:
CREATE PROCEDURE [TestProc]
AS
BEGIN
select '1a', '1b'
select '2a', '2b', '2c'
select '3a', '3b'
END
If I execute the following query using SQL Management Studio,
[Code]...
How can I get the three result sets using SqlDataReader? Or even three SqlDataReader's? Or is it possible to get multiple result sets in just one query in VB.NET? Is DataSet my only option?
I have a sql query with that adds numerical values from different table to find total for a shipment. When I execute this query, it works fine for the first record but rest of the records show null value when I know there are records present. SQL pros take a look if there is a problem with my syntax.
CODE:
This is my first attempt at writing a program that accesses a database from scratch, rather than simply modifying my company's existing programs. It's also my first time using VB.Net 2010, as our other programs are written in VB6 and VB.NET 2003. We're using SQL Server 2000 but should be upgrading to 2008 soon, if that's relevant.I can successfully connect to the database and pull data via query and assign, for instance, the results to a combobox, such as here:
[Code]...
How do I execute a query so as to assign each field of the returned row to individual variables?
which contains a combobox with two Gender options, Male and Female. When the form runs the user can select either male or female to perform a query. I made the ComboBox public and shared so that it can be viewed by other forms. On another form i added a ReportViewer and a dataset based on my database (MS Access 2007 database with 1 table named tblStudents). I don't have any problems when i try to run a simple query without parameters, but there is a problem with my
View 13 RepliesI have a 4 table database and need to query at least 2 tables (the single table query works fine). The output goes in textboxes / labels on an existing form.
I'm trying something like this:
Private
Sub AddCustomer_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[Code].....
I have a report that displays some sales info. I have a query that takes the data from an SQL Server database and I store it in a dataset. Up to there everything is ok. The problem is that I need to print the same report using Crystal Reports for each row in my query. Is there any way this can be done? I call a form with a ReportViewer tool to display the reports, wich are basic .rdlc reports.
View 1 RepliesHpw can I pass multiple values from same column in a query? I am using vb.net and sql server database.
With my query an exception is generated saying that @booking_date has already been declared try a different variable....
My query is:
Dim da As New SqlDataAdapter("select * from Bookings where booking_date Between (@booking_date AND @booking_date) AND booking_time Between (@booking_time AND @bookinbg_time) AND game = " & x, con)
I have some pieces of code like this:
strSoftware = "select MobileSoftware.Entertainment, MobileSoftware.MobileApplication, MobileSoftware.RingingTone, MobileSoftware.Directory from MobileSoftware where MobileName = '" + strName + cmdSoftware = New SqlCommand(strSoftware, con)
drSoftware = cmdSoftware.ExecuteReader
When I write the query in one line, then it works. But when I do like this:
[Code]...
Code:
Tables:
- Company
- Department
- Employee
- CertificationA
- CertificationB
I am trying to return a recordset that gives some summary information about each company. The fields in my returned recordset should look like the following.
Company.Name, NumberOfDepartments, NumberOfEmployees, NumberOfCertificationA, NumberOfCertificationACompleted, NumberOfCertificationB, NumberOfCertificationBCompleted
There are actually about 10 different Certification tables but, with Certification A and B you should get the hang of it. When an employee starts a certifaction, a record is added to the that certification table.Below is a query I wrote that works (gets me the data I need), but I am unsure if it is the most efficient way. There will be quite a lot of data so performance is an issue.
Code:
Dim sqlNumberOfDepartments As String
sqlNumberOfDepartments = _
"(SELECT COUNT(*) " & _
"FROM DEPARTMENT " & _
[code].....
This is my first time using the Entity Framework and I'm getting some confusing results. I know a particular table contains 3 distinct rows when I run this SQL query:
SELECT * FROM mytable WHERE service_month = 201012
When I run this query against the framework however, I get 3 rows, but they are all copies of the first row (VB syntax).
Dim temp = _context.mytable.Where(Function(x) x.service_month = 201012)
Did I set up something incorrectly? This is how I'd do it with LINQ to SQL.
How to Query multiple tables in a dataset to form single consolidated table without using any external database. I know this can be done using 'JOIN' in SQl.
Now my condition is I have multiple tables filled with data in a dataset and each table is interrelated with a common 'column'. For example ,
Table 1
ID
Name
1
[Code].....
Here I mentioned only two tables but in my case there are many tables. I need a generic answer for this dynamic query .
I am using vb.net and sqlite as database. I am using below scenario to insert multiple records in database using a single query.
INSERT INTO TableName (FirstCol, SecondCol)
SELECT 'First' ,1
UNION ALL
SELECT 'Second' ,2
UNION ALL
SELECT 'Third' ,3
[Code] .....
For less records it is working very well.But when I am inserting about 800 records at a time, executenonquery is throwing the following exception:
SQLite error
Too many terms in compound SELECT.
I have a VB .Net linq query that I want to return values from two tables. I currently have this:
Dim query = (From c In db.Client _
Join u In db.Users _
On u.UserID Equals c.UserID _
Where (c.ClientID = 1)
Select c, u).ToList
query (System.Collections.Generic.List(Of )) returns several rows as expected each item containing a c and a u.
How do I iterate through the queries collection?
My LINQ query contains the following Group By statement:
Group p By Key = New With { _
.Latitude = p.Address.GeoLocations.FirstOrDefault(Function(g) New String() {"ADDRESS", "POINT"}.Contains(g.Granularity)).Latitude, _
.Longitude = p.Address.GeoLocations.FirstOrDefault(Function(g) New String() {"ADDRESS", "POINT"}.Contains(g.Granularity)).Longitude}
The query works, but here is the SQL that the clause above produces
SELECT [t6].[Latitude]
FROM (
SELECT TOP (1) [t5].[Latitude]
[Code]....
but this produced an error: "A group by expression can only contain non-constant scalars that are comparable by the server."
I am using datarepeater on my windows form to populate records from a temp table. I want to write query to insert records for an employee in a single row rather than multiple rows. For example: I am displaying records of one month only. so i know the definite number of columns. Normally if we use select * from Temp ' it will display and i can populate in a datagrid.
[Code]...
i'm currently making a client database program for work that stores data in multiple text files (so that the information won't be confused as to which info belongs to who in the database). Each client has his/her own text file, which isn't really a problem although i realize it's a bit messy. A listbox holds items, each item a person's name.When the listbox selected index is changed, the streamreader opens the corresponding textfile, which is as such: "John Doe.txt", and populates the correct textboxes with the information stored in "John Doe.txt".What I'm unfamiliar with is implementing a search function.
1. search query entered
2. streamreader reads through all txt files in a directory looking for matching keywords.
3. if a match is found in a txt file, it looks at the name ("John Doe.txt"), gets the corresponding listboxitem, and finally, once the textboxes have been populated with the info in the file, highlights the matching keywords.
4. then i figured if there was more than 1 match over more than 1 txt file, you could repeat the process and skip to the next match via the tab key (like the find feature of a WebBrowser or other such application).
What i don't understand is how to read multiple text files, search in keywords, highlight the matching keywords, or the tab function..I know that's a lot to ask on a forum, but I had nowhere else to turn.
I am creating an application for a friend and have no issue inserting or updating the table, but I am having trouble relaying the information from the query back to the corresponding textbox when searching for an entry.
This is the closest thing I've got to a working model, but I'm still getting and "array out of index error".
[Code].....
I have a method in a webservice that has parameter with which users can decide how they want to order their results. This is a List(Of String) with the names of the fields in the order they want to sort them. I know I can normally order on multiple columns by doing the following
Dim test = Bars.OrderBy(Function(x) x.Foo) _
.ThenBy(Function(x) x.Bar) _
.ThenBy(Function(x) x.Test)
However in this case this won't work since I can't chain the ThenBy function because I'm adding the sorting orders in a loop. To use ThenBy I need an IOrderedQueryable collection. This is how I would want it to work
Dim sortColumns = {"Foo", "Bar", "Test"}
Dim query = From b in Bars
For each column in sortColumns
Select Case column
Case "Foo"
query = query.Orderby(Function(x) x.Foo)
[Code] .....
Ok, the basic situation: Due to a few mixed up starts, a project ends up with not one, but three separate databases, each containing a portion of the overall project data. All three databases are the same, it's just that, say 10% of the project was run into the first, then a new DB was made due to a code update and 15% of the project was run into the new one, then another code change required another new database for the rest of the project. Again, the pertinent tables are all exactly the same across all three databases.
Now, assume I wanted to take all three of those databases - bearing in mind that they can't just be compiled into a single databases due to Primary Key issues and so on - and run a single query that would look through all three of them, select a given set of data from each, then compile those three sets into one single result and return it to the reporting page I'm working on.