VB Getting The Number Of Records From A SQL Command?
Mar 4, 2011
The code below carries out the query find but continues to add records to the table.I amtrying to find out what the record count is so that I can then performnother action. When the query is executed the first pass the record count is 19.This is valid and matches the DB The 2nd pass the record count is 49, but the DB only shows 30.
Private Sub frmRecordCounts_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim CatClass(0 To 3, 0 To 5) As Integer
I have a problem with a sql query. Through the query I am trying to search database for any occurrences of string (can be anything) in a column using the SQL LIKE command. The problem is that it works fine for most of the strings say john, jim, ji"m , but does not work when i include the following characters which are ( ' , { , } , and a single quotation mark). MYSQL query takes care of these special cases by putting them in [] block whenever user enters them .But i am getting the following error when i go to query the database using the GetSelectCommand() in VB.NET
Exception Details: System.ApplicationException: Number of values provided must be equal to the number of placeholders in query.I have checked the query over and over again .. but its fine .My database server is Sql Server 2008.So my application throws the exception in this command:
Using reader As MustDisposeDataReader = _ pmSystem.DatabaseManager.GetSelectCommand(selectStatementBuilder.ToString(), New Object() {})
Where MustDisposeDataReader is an instance of a class in an internally developed library, which inherits from System.Object. pmSystem is an instance of the class PlanManagerSystem which implements the commandlayer. GetSelectCommand() takes the select command
I'm using VB.net 2008 and I just want to know the syntax or the command that gets the number of records in a table.I saw numerous syntax on the net like this
I have 1000 records in DatagridView. I want to Display only 500 records in datagridview. I will put a button and a TextBox, and Enter 500 in TextBox, It should show 500 Records. How to Do?
I'm having a problem setting the maximum number of records that can be saved into Access. The maximum allowance is to be 10. Records are being pulled from a listbox. The whole problem is that if the listbox has 7 items and my table already has 5 records, it still records them, making a total of 12. What I'm looking for is a way to trap that to a max of 10.[code]...
I have a vb application sitting on sql 2005 database i want a scenario where the application can check the number of records inserted into a particular table(Users) , if the number of records inserted into that table after 1wk since the last insert is less than 100 records it should pop up a warning alert with the total number of records
I am trying to display the content of the text box according the number of records in the database. When i do it manually it works but when i do it through the "for" loop i am confused. my code is as below
For i = 0 To total_rec fname1.Text = ds.Tables("roster").Rows(total_rec).Item("FirstName") lname1.Text = ds.Tables("roster").Rows(total_rec).Item("LastName") Next
Now i want to change the index of "fname1" some thing like "fname(total_rec)" but it does not work
I have to export the data from the database to .txt file, I have the code below that does export it to .txt file but I'm having problems with this code because the data that I'm exporting is about 5 000000 records, it is quite slow and sometimes the pc can't handle it and stops the exporting.
Dim saveFile As New SaveFileDialog If saveFile.ShowDialog = Windows.Forms.DialogResult.OK Then command = New SqlCommand
If you are working on a large record in database. How you manage to use the INSERT,,UPDATE? I mean when selecting a record base on two tables or more and those tables consist of 20 columns it hazard to put all those columns in one query.
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How to lessen the code without typing all those queries over and over again ?
I'm creating a report where I want to send a parameter for the number of records to display (I do not want to select the number of records in SQL) I have created a parameter field (?topN) and set the group to use this value which in design mode works well however when I try to set this parameter in vb.net code it does not work. The field which also displays the value shows the parameter correctly though.
i have a sql table which has 2 fields number & name
1 abc 2 xyz
Situation is that the app finds out max of number and increments it by 1 to get new number.The problem is when two users enter some record sometimes two records get saved on same number.
I've found a sql string like: "SELECT Count(*) FROM table"My question is: how can I use this string and get the result into a variable in VB2010? I used to program with VB6 for years, but now things are very different.
I want to find which of the 64 elements has the highest number and which of the 64 elements has the lowest number?Is there a new command in vb10 to do this quick with little code?
how can i return the number of records processed from an sql procedure whether it is a select or update/insert query and how can i receive it in the calling method in vb .net.
I need to count the number of records that match on the GIDs from the 'Directories' table (GID) and the 'ClientSubscriptions' table (DirectoryGID), and also the 'FranchiseGID' from both; as follows:
Dim iSubscriptionCount
SQLCommand = "SELECT COUNT(*) AS Counter FROM Directories.GID, ClientSubscriptons.DirectoryGID FROM Directories, ClientSubscriptons WHERE Directories.GID = ClientSubscriptons.DirectoryGID;"
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I need to determine whether or not to show a menu option based on the above.
Full Code: Default.asp
<!--#include virtual="/System/Startup_Admin.asp"--> <!--#include virtual="/Admin/FranchiseAdmin/DirectorySetup/i_Directory.asp"--> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-
I am new to VB and trying my hand at the below code. I am trying to determine the number of records for each possible combination. Depending on the outcome of the number of records groups may be combined. I am not able to find the record count for each grouping. Can you please look at the code below and suggest what I am doing wrong?
I have users check off lab facilities in a UI. I want to use linq to fetch corresponding records for all of the labs that they have checked off. Basically,
Dim myRecs = (From l As EpiData In myDataContext.EPIDatas Where l.facility= _ one of the checked labs
So basically, I need to write a linq query where the "strings" to match are determined at runtime. Is there any way to do this easily? I know that there is a library out there called dynamic LINQ, but (1) it's in C# and I'm writing in VB (2) I'm really just looking for a single, simple solution for this single case.
I'm trying to delete a number of records in a table from the last and forward. My idea is to use sql like this: delete top " & variable & " * from table where ID = something It gives me a general sytax error. Is it at all possible? Fuga. Edit: I also have the order by statement there. I just forgot to put it in the question.
