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
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?
View 10 RepliesI 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)
We need to display all the thumbnails in one folder (e.g. c:/photos/101/tn/ folder) and then select one image as cover photo. Once the editor clicks on the "Set Cover Image" button, grab the select photo ID. Once the id is grabbed, I will store the info in the database.
View 1 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.
Trying simple delete against a Photo table but hitting error as conversion type error.
[Code]....
Is there a better way to write this sql statement? or convert the UserId to int32 before executing? Not sure how to do that.
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
[Code]....
[Code]....
How to create sql server table with unique random identity between 45365 - 5782155129452 ?
View 5 Repliesin asp.net i want the user to chose a photo to upload from their HD . then i want the uploaded photo displayed and an hyperlink option to save or reject this photo. if accepted the filename will be stored in a DB.
the problem is displaying the photo before it has been saved.
I display strFileName which works on my PC but not on my laptop.
[code]
The 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:
[Code]....
[Code]....
[Code]....
[Code]....
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)
I will declarate a attribute, but it gives me an error
This query works fine and returns 1 record from type int:
SELECT TOP 1 DataObjectVersionID
FROM tblDataObjectVersionPropertyValueText
WHERE PropValue like CAST('00010281' AS ntext)
ORDER BY DataObjectVersionID DESC
And when I will declarate a attribute/parameter it gives me an error:
DECLARE @dataObjectVersionId INT
SET @dataObjectVersionId = SELECT TOP 1 DataObjectVersionID
FROM tblDataObjectVersionPropertyValueText
WHERE PropValue like CAST('00010281' AS ntext)
ORDER BY DataObjectVersionID DESC
Error message:
Msg 156, Level 15, State 1, Line 2
Incorrect syntax near the keyword 'SELECT'.
[Code]....
how can i call the event in another event.like Button Click event.
I have customer data in MSSQL database. More than 1million records i have. I want to select a random 2000 records
from the one million record and do some manipulation. After manipulating the data i want to store that data to some other database.
How to achive it in c# and MSSQL2008?
There is a bug in jQuery 1.4.2 that makes change event on select-element getting fired twice when using both DOM-event and a jQuery event, and this only on IE7/8.Here is the test code:
<html>
<head>
<script src="http://code.jquery.com/jquery-1.4.2.js" type="text/javascript"></script>[code].....
This causes alot of trouble for us in our application cause we use both ASP.NET-events mixed with jQuery and once you hook up a change event on any element every select (dropdown) gets this double firing problem.
What I have is a command column with 2 link buttons, Review and Update. The Review link will show a more in depth look at the record (pretty much a detailsview) The Update link will allow the user to edit a few select fields. The Update link works fine, because I put the code in the GridView3_SelectedIndexChanged event. When I click the Review link (which has code in the LinkButton1_Click event), there is no data from the Selected row, because the row is not yet selected. Is there a way to trigger the selection BEFORE the button click event? It seems like this should be easy, but I haven't needed to do this before.
View 3 RepliesI'm using the code below to select multiple rows in a gridview using a checkbox, how do I modify the code in a "select all" button click event to select all the rows by checking the checkboxes in all the rows? How do I also clear all the checkboxes using sa "Clear" button click event?
<asp:GridView ID="GridView2" runat="server" Height="211px" Width="16px">
<Columns>
<asp:TemplateField HeaderText="SomeText" > [code]....
SQL Query with IF and Select
View 2 RepliesI would like to combine two commandtexts into one
text1.CommandText = "SELECT Id, Heading as Head FROM dbo.Modul"
text2.CommandText = "SELECT Id, Caption as Head FROM dbo.Menu"
I want to combine these two into:
text3.CommandText = "SELECT Id, Heading as Head FROM dbo.Modul" + "SELECT Id, Caption as Head FROM dbo.Menu"