How can I select a random row and then update or delete it? I've found how to get a random row, using SELECT TOP 1 column FROM table ORDER BY NEWID() do I have to make another select using this result in order to update the row, or it can be done more efficiently?
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I have two tables, events and photos, in the relationship one event to many photos, joined by Event_ID.
I want to write an SQL Query, to display one random photo from each event in the database.
What would I have to write to make it do this? I know its something to do with Inner Join and Group by, but I'm not sure.
Field Names:
Photos.PhotoID
Photos.Event_ID
Events.Event_ID
Events.Event_Title
I create a table as picture below :
when I insert any character to column Name then A new string random will auto insert into column Random (picture below) I had used Trigger but It was error !
I want to column Random use to code :
DECLARE @myid uniqueidentifier
SET @myid = NEWID()
insert into table_1 values(@myid, substring(CONVERT(varchar(255), @myid), 1, 5))
but It must auto like column Number (column Number is Identity)
I am about to get my sites hosted with a local host company. They are offering me their lowest cost MSSQL server, which is the web edition. So my question is what is the difference between that and 2008 express edition? Can express edition be used for a full fledge in production website? And does Web implies that I will be interacting with it via the web correct. Lastly, if the web version is not chosen what is the typical protocol for uploading and maintaining a site when you have a dedicated server. Do you normally have to go to the data center or is there like a web portal that can be used. I will be asking the guys at the company these questions as well, but I want to make sure I get another opinion on the issue.
View 1 RepliesI asked plesk the following question:I've been through the documentation and scoured various forums, but I can't find a defintive guide to uploading an mssql db (contained in a app_data folder) to the server and conecting it via the Plesk control panel. I've created a db and user via the panel but how do I get the actual db to the server and get it to work?"and they replied:"For database restoration please upload your database backup file ( i.e. .bak ) under your hosting space and update us the exact path where you place this file + your database login details ( i.e. database name , database user name and password ). So we restore this database for you. "
View 3 RepliesHow do I import this XML: [URL] into MSSQL?
View 5 RepliesI was wondering what you guys thinks is the most efficient way to select data from a msSQL database.. I tend to use a sqldatareader, but is this really the best way? - It is particularly impractical if one also must take into account, that the table may be "Null"?:
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On the internet we bought/hired a CRM product. When we enter a new project this datarecord (on their MSSQL DB) is transferd to our local MSSQL DB.
Internally we got a seperate application that uses the project information.
So after an insert project on the CRM side (on the internet) the data is transferred to our DB. When i check the internal application I see the project. All nice and sweet.
BUT when I alter (UPDATE) a project in the CRM internet application this data is pushed to our DB and i see the data in the table. But it doesnt show up in the internal webapplication. When i restart the website in IIS it still doesnt. Only when i restart the entire IIS the data is updated in my internal application.
Used techniques:
.NET 3.5MSSQL 2005LINQ to SQL The only thing i can imagine is that LINQ to SQL has a own cache or something. If so... how to disable it
using c#, i have an array where i want to test every single line of this array if it is already contained in a table of a database. if not, i do an insert. the test if the line is already in the table is performed using update, if update fails i insert the line. this works BUT the table contains 100000 entries, the arrays i want to compare/insert contain appr. 5000 entries. so, i is really slow and takes minutes.
View 7 Repliesi was trying to upload from an .xls file to microsoft sql server.What i did was i upload the file to a folder in server and pick the record from the folder. This work on development machine but on getting to a iis server to test the application i got an error that was saying the root folder for the www root for the folder was not found. Below is the code.
<pre lang="msil">protected void btnUpload_Click(object sender, EventArgs e)
{
string FileName = FileUpload1.PostedFile.FileName;
string saveDir = @"";
string appPath = Request.ApplicationPath;
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In remote db, I can be able to connect ms sql db as localhost in my connection string like below,
<
add
name="ConnectionString"
connectionString="Data
Source=localhost;Initial Catalog=DBServer;Persist Security Info=True;User ID=sa;Password=*****"
providerName="System.Data.SqlClient"
/>
This is running in server and its working fine.
If i want to make any changes in db structure or need to modify any data values, i have to login remotely to my server and has to open sql server management studio do db change or value editing stuffs. Its really getting iritating when the remote machine looks slow.
I just want to know how to configure the db hostname like dbname.domainname.com or mssql.domainname.com in server, so that we can open the server db in local using sql server management studio.
The application installed in windows server 2008 and using IIS 7.0 & SQL Server 2008
I have only little knowledge in server.
I'm an experienced PHP programmer that is new to ASP.net (C#). I'm trying to figure out how to do a manual echo of a specific field from an SQL database and was wondering how you do an if condition in case the field would meet certain criteria ?
What I want the script to do is check in the database if a certain condition is activated, then the html page should echo a windows media player object with the source of the video coming from the database itself ( $line[Video], and if the condition isn't active then either don't echo the player or just echo an old video (in the script I'm just printing a message).
in PHP:
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I use a calendar to pick a date that I want to store in my MSSQL Database. I use the form format, like 2010-01-27 (european date format) with no time info. What MS SQL Date-type should I store this date in?
View 4 RepliesIm trying to import a semiolon seperated file into mssql db 2000 table and I need your help.I can read the file and present the content in a for loop, but I would like to extract values at certain possions.Like "Fel Beskrivning;Konktakt förare; and so on.
View 2 RepliesI want to pull a random record from the db.
Here what I have so far.
Dim RandomNumber As New Random()
Dim num As Integer
num = RandomNumber.Next(1, 75).ToString
Try
Dim Cnn As New OleDb.OleDbConnection("File Name=E:WebRHIUDLShelf_Life.UDL;")
Dim da As New OleDb.OleDbDataAdapter("SELECT tbMaster_List.dbMFG, tbMaster_List.dbDescription, tbInStock.ID, tbInStock.dbMFG_Lot_Code, tbInStock.dbDateReceived, tbInStock.dbDateOpened, tbInStock.dbExpireDate, tbInStock.dbLocation FROM (tbInStock
INNER JOIN tbMaster_List ON tbInStock.LnkToMaster = tbMaster_List.ID) ", Cnn)
Cnn.Open()
Dim dtt As New DataTable()
da.Fill(dtt)
This is were I am stuck.
I need to filter all rows out except where row(index) = num
Me.GridView4.DataSource = dtt
Me.GridView4.DataBind()
Catch
Label1.Text = "Error: Unable to Pull Data"
End Try
I have this LINQ query:
var agnts = (from a in db.agents select new { a.userid, a.name }).Take(10);
How can I get randomly get 10 records from my agents table?
I have tried:
agnts = agnts.OrderBy(n => Guid.NewGuid());
but this doesn't seem to do anything.
Is there any method by which we can retrieve random data from a dataset or rather directly from a table.
For example, I have around 30 questions in my table, I just wanted to display 20 among them and that too in a random order without the same item repeating. Can we achieve this using SP or through some Dataset manipulation?
i have a select statement which returns a column value.
id like to display the lowest column value there is, but if there are multiple rows with the same (and lowest) value id like it to be random which one of the rows is selected.. how would i do this? my select statement is currently:
SELECT TOP (1) url, ABS(r1 - @r1) + ABS(r2 - @r2) AS difference
FROM type
ORDER BY difference
this picks the one lowest result for me, but if there are multiple duplicate lowest results id like to select them, and show one at random..?
I am working on a project for a market research company that needs to select and have it displayed to my gridview. I need a select statement that will randomly put on my gridview the following:
Recruitment Goal 21 people and out of those people 10 people have to be male, 11 people female, 9 of them white, 9 of them black, 2 of them hispanic. Is there a way I could do that? I was thinking of doing a stored procedure and doing something like
Select TOP 10 * from Canidates where sex = 'Male' order by newid() Into #tmp
Select TOP 11 * from Canidates where sex = 'Female' order by newid() Into #tmp
Etc... and then just selecting from the Temp Table.
I want to return random records in term of time whithout NEWID
View 5 Repliesi have a query that select random records in access database in terms of time : "SELECT TOP 10 * FROM Tbl ORDER BY Rnd(-10000000*TimeValue(Now())*[ID])" now i wish to convert this query for using in sql server 2005 such that return random records in term of time
View 5 Repliestrying to write a stored procedure to select any 5 random columns from a selected row,this is the query i ve written so far
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How to create sql server table with unique random identity between 45365 - 5782155129452 ?
View 5 RepliesThe drop down list is used to determine what search criteria will be used to find an invoice. I tried to set the Select method in the switch statement. I don't understand how to set the Select Method and the select parameters programmatically though . I tried a few different ways but can't make the compiler happy. My ODS is in scope in the code behind. I'm not able to access it's properties though. The BAL resides in a separate project that is a ClassLibrary. I also have a using statement for the ClassLibrary project in the code behind.
give me an example of how to do this?
Mark up:
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protected void Button19_Click(object sender, EventArgs e)
{
SqlDataSource conn = new SqlDataSource();
conn.ConnectionString = ConfigurationManager.ConnectionStrings["Database2ConnectionString1"].ToString();
conn.SelectCommandType = SqlDataSourceCommandType.Text;
conn.SelectCommand = "SELECT FROM table1 (a, b)VALUES(@a,@b)";
conn.SelectParameters.Add("a",TextBox1.Text);
conn.SelectParameters.Add("b", TextBox2.Text);
int rowsAffected = 0;
try
{
rowsAffected = conn.Selectt();
}
catch (Exception)
{
Label1.Text = "Error";
}
finally {
conn = null;
}
if (rowsAffected != 0)
{
Label1.Text = "Data saved";
}
}
well it returns error no overloading method for select (P.S. same code work fine for insert)
