Use SQL Statement To Retrieve Data Record From SQL Server?
Apr 21, 2010
I had tried to use SQL statement to retrieve data record from SQL server, but when the database grow, the query speed getting slower. I just want to get most recent 5 records, any way to make it fast? Below is the SQL
SELECT Top (5) EventNumber, IP, DateTime, DateTimeStamp, EsdMaxLog, EsdMaxLin, EsdMaxAbs, EsdCntAll, EsdCntLast, SvMax, SvCurrent, EsdLimLog, EsdLimLin,
EsdLimAbs, Distance, SvRange, CdmFilter
[code]....
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Apr 27, 2011
I am using a not equal operator <> in my sql statement but it doesn't retrieve any record which is not equal to the selected date.
CODE:
Command = New SqlCommand("SELECT * FROM [Products] WHERE [ParkingStartDate] <> @StartDate", myConn)
Command.Parameters.AddWithValue("@StartDate", StartDate1)
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Mar 11, 2010
am developing software using sql database. i want an sql statement that can enable me retrieve data which for example has same surname,save them in an array or dataset and navigate through them.
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Apr 18, 2009
I hav a web service which pull records from a database and I am hosting these services in IIS which works fine but I am trying to retrieve the record and display the record in a listbox displaying the time field as the text for that record.I have created the following function
public sub get_data()
dim dt as new data.dataTable
dim service as ws webservice.webservice
[code]...
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Jan 29, 2010
I am using the following Select Statement to retrive data from my .csv file database:
Code:
Dim comm As New OleDb.OleDbCommand("Select *, Left([Street Full Address], IIF(InStr(12,[Street Full Address],'-')>0, InStr([Street Full Address],'-')-1, Len([Street Full Address]))) as StreetFullAddress From " &
[Code].....
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Nov 26, 2010
I am trying to create a LINQ query statement that retrieve intersecting data from 3 datatables (dt, dt1, dt2). My first attempt to do so with the following LINQ query statement was successful: [code] However in my design, I would need the LINQ query statement to be dynamically generated, because I want a user to be able to retrieve intersecting data entries from VARIABLE number of datatables. In this case, the first option is not as good as the "INTERSECT" query operator, with which I can just easily connect each SQL query statement with a "INTERSECT" operator. The problem is that my second attempt using the "intersect" operator fails, and after many trials and errors I still can't get it to work. [code]
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Sep 3, 2010
I am trying to retrieve information from one row that has four columns(name,company,address,phone) so that once it is displayed in 4 different textboxes, I can transfer to a word document.
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Jun 29, 2009
I am(beginner) trying to make a simple application using visual basic 2008 and sql swerver 2005.The connection is successful and i can add/update/delete data sucessfully from sql server database but now i want to show the data from sql server to textbox on the visual basic form. i have tried the following code but this doesn't work and even there is no any error.[code]...
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May 9, 2009
I am using visual basic 2008 and sql server 2008. I am trying to retrieve data from a table in sql server 2008. I am using the following code
Dim cn As ADODB.Connection
cn = New ADODB.Connection()
Dim rs As ADODB.Recordset
rs = New ADODB.Recordset
Dim cnstr As String
[Code]...
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Jun 10, 2011
Am trying to retrieve data from sql server based on two columns. Its a web application being developed using VS2010 (vb.net) but i keep getting the error: incorrect syntax near '='
Here's my code below:
Sub GetBasicMidwives()
' Set the SelectCommand properties...
With objDataAdapter
.SelectCommand = New SqlCommand()
[code].....
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Apr 10, 2010
I want to collect all stocks information within 2009 & 2010. I stored the required parameters (YMD & stock code) in DB. Is it possible to write a VB.Net windows application to pass all required parameters (post method) to web server and retrieve the web response automatically? (1 - 5 are valid stock code) It is
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Mar 7, 2010
Note: Combobox contains company name, then when i select one of the company in the list, the information on the table connected to to the company table like purchase order table info will appear on the datagridview.
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Jun 9, 2008
I have a combobox where the user can type the sql server name. Then a connect button that, when the user click, I want it to populate another combobox with all the databases from the server in the previous combobox. Unfortunately, I am getting the error object reference is not set....!
Here is where I am getting the error:
For Each objDB As Database In Me.SMOServer.Databases
I am new to VB ...I'm using vb2008 connecting to sql server 2005.
Here is my complete code:
Imports Microsoft.SqlServer.Management.Smo
Imports Microsoft.SqlServer.Management.Common
Public Class Form1
'Public Class frmSQLConnection
Private m_objServer As Server
[Code] .....
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Sep 12, 2010
I have now wasted over two days going round & round in circles with the pathetic excuse for a Help System Microsoft now makes us put up with (& nearly blown my monthly broadband data cap doing so).I have lost count of the links that do not exist.The Give Feedback option also does not work (I do not like Microsoft Outlook, & in spite of having set Windows Mail as the default mail that doesn't work either!).Every VB example I have downloaded has failed to operate as it should (if at all), so surprise, surprise nor does my implementation of what they say is how to do it! please give me the "exec summary" version of what I need, ON ONE PAGE which is: Correct way (& syntax) to (in VB code):
1 Open an existing SQL compact 3.5 database THAT IS WHERE I SPECIFY - NOT WHERE the wizards keep saying it is(it against my instructions)!
2 Search to see if a particular record exists in the database (eg WHERE ColumnName. FieldContents = ContentsImLookingFor)?
3 Retrieve the found record into my own record buffer?
3 Add the record if it does not exist?
4 Change the record?
5 Delete the record?
6 Close the database?
The rest I will do MY WAY, a thousand times faster & more efficiently than anything I've seen "documented" so far. Surely that is not a huge ask requiring GBs of "Help" garbage leading nowhere?I've only been programming for 25 years (but not in this environment),
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Aug 23, 2011
I have a task to create a web service to receive client-side app's http request(with rpc={json data} in the end), deserilize it and put he parameter in stored Procedure in order to retrive data from sql server. the procedure query and client-side's app are already there and the return data to client-side app is JSON too
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Mar 26, 2011
when i try to delete a row . always restricting to delete on certain Table table.( DELETE ERROR tble_tombstone) message comes up.
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Apr 23, 2009
How can i retrieve last updated EmpID form sql database.
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Jan 10, 2010
how do you retrieve a specific record from a database. i have a database with records of stock an i need to be able to check the stock for specific items on the database. The collumn is quantity and im trying to retrieve the integer value based on oledb querry "SELECT Quantity FROM Stock WHERE ItemID=ITemID"
btw i have tried oledb data reader but don't seem to understand it .
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May 11, 2009
I am using the following SQL statement to retrieve information from an access 2003 database but this command keeps stripping out the proceeding 0 from the number of the month. The variable is called TBookingsDateFulldate
Dim sqlQuery As String = String.Format("SELECT [ID], [Date], [Zone], [Year], [Subject], [Teacher], [LessionID]" & _
" FROM tblBookings" & _
" WHERE (((tblBookings.[Date])={0})" & _
" AND ((tblBookings.[Zone])='{1}')" & _
" AND ((tblBookings.[Active])=0)" & _
" AND ((tblBookings.[LessionID])='{2}'));", TBookingsDateFull, TBookingZone, TBookingsTimes(B, 0))
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Sep 9, 2009
When I to connect to remote host to retrieve sql record...
it execute to few minute will get his error message... but there is already work perfectly and get connected... it loop it a few record only will occur this error...
"Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host."
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Feb 18, 2011
i need a update statement to make a record = 1 example : the colum what need to change is active and it must stand on 1 to show you in to a listview (that part works) but i need to do it manualy to make them active now i liked to when the login is a succes then the record = 1 for you this is my code :
Private Sub Button1_Click_1(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim adapt As MySqlDataAdapter
Dim sqlquer = ""
[code].....
i get this error : Object reference not set to an instance of an object.
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Nov 14, 2011
I have a simple application for taking Customer orders and their Products. I am using Visual Studio 2008 Express Edition and MS Access 2007.My application uses multiple forms. One of the forms is an Add form from where a New Customer along with his/her details like address, phone, city, state etc can be added. Another form is for the Product Details to be added.I want to know how to retrieve a CustomerID from an MS Access 2007 database for either the newly added Customer or an existing one and insert multiple rows or records for the same CustomerID, as a Customer can order multiple products. I am using the following code for the Add button:
Private Sub cmdAdd_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdAdd.Click
[code]......
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Oct 8, 2009
how to retrieve record from table that i have done using the select query but i want those data to display in the text boxes.
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Jun 14, 2012
I have a datagridview that is filled by a query in the dataabse via the DataSource property.What I want to retrieve some infomation from the record that a user selects in the DataGridView. How do I do that? i've been looking for some time now but I can;t figure it out.
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May 26, 2011
I am attempting to loop through each record in dtlist and compare it to each record in dtsold get the distances and retrive the max value I get an error on the line:
[Code]...
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Jan 28, 2010
I have an enum set with custom attributes. need to retrieve the attribute value in single statement ...
Public Enum Messages
''' <summary>
''' <value>(MessageText : Do you want to save ?)</value>
''' </summary>
<StringValue("Do you want to save ?")> Save
[Code] .....
Now I needed to retrieve the enum value like something below.
Messages.Save.GetType().GetCustomAttributes...... something is possible in single statement itself?
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Dec 3, 2011
I use This Code To Save Data in Table First I delete record Then Insert record
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Aug 2, 2011
How do i find the record pointer AFTER the select statement was executed. I am excuting the following code, but i need to move my pointer to the found record
adp3 = New OleDbDataAdapter("SELECT * FROM Recipe1 where RecipeName = '" & RecipeName & "' ", con)
adp3.Fill(dt2)
ListBox1.Items.Add("RECIPE NAME : " & (CStr(dt2.Rows(0)(UCase("RecipeName")))))
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Dec 30, 2010
Here is the structure of my database: i have textbox1 and textbox2 and 8 checkboxes in my ASP.NET (VB.NET) webform.i want to retrieve the seats on the particular dates means if i enter 11/12/2010 in textbox1 then in textbox2 the output would be from seat_select column, let say (1,2,3) where date would be 11/12/2010
If i enter 13/12/2010 in textbox1 then in textbox2 the output would be 1,2
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Jul 14, 2009
I am using Visual Studio 2005 (Visual Basic) and MS Access 2003 I am trying to build an application in the lines of the book "Doing Objects in Visual Basic 2005" by Deborah Kurata. So, I have a Data Access Layer (DAL) Class Library that is separated from the business logic layer (business objects) Class Library. I try to add a new business object such as a "Customer" to the Access Database, where the "Customer" table has a PrimaryKey "CustomerID" which is an AutoNumber field. I am successful in writing the values to the database, but I can't figure out how to know the "CustomerID" of a newly added "Customer" so I can populate the business object with the respective values.
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