Can sql queries be nested in sql queries?
I am having problems with a template that uses the information from one sql
query to generate a query on another table. Let me be more specific. The
template in question receives a category ID value from a web page that
provides a menu of several categories to choose from. Each Category ID
represents several Items or products to choose from. When the template
receives the category ID, the first thing it does is run a query on my
item_category table (this table lists all of the items and associates them
with the appropriate category). This query returns several itemIDs that are
all...SQL DataSource : Object Reference not set to an instance of an object
Dear friendsI am getting this error from few days (it was not in past)when i add new "sqlDataSource" , I set the Server name, user name and password then i select the Database, when i click on "Test Connection" button, it does not give me any Error and it shows that Test connection Successful, but when i click "OK", It shows the Error box with the error "Object Reference not set to an instance of an object"From few days it is happening, I was seting the datasource without any problem in past.I am using SQL Server 2005Any one can help? aliusmankha...C# Ado.net Sql query parameter query
I'm trying to pass in a parameter value from an array in a loop that is used in a sql query and the results are populated to an xml file. The trouble is that I'm only getting the colums values in the outputted xml file. So I feel that the paramter is not being read.
So can anyone help as I'm really stuck on this one. The code is as follows :
public void DisplayUserInfo()
ArrayList UserIdArrayList = IdentifyUserID();
foreach(string ShowUserIDString in UserIdArrayList)
SqlConnection SqlConn = new SqlConnection(DBConnString)...DataSource Nested Query??
I want to run a Select query based on the SelectedValue of a dropdownlist, but If a specific value is selected...I need a different result. Not sure how to write a nested query for SQL server using a SQLDataSource control. Any assistance would be greatly appreciated.
Hello rock056,I would love to help you, but I'm not sure what you are getting at. You can build nested queries in SQL without a problem:SELECT Field1, Field2FROM ( SELECT Field1, Field2, Field3 FROM MyTable WHERE Field6 < 100 ) SubQueryWHERE SubQuery.Field3 > 500What do you mea...Datasource Sql query
Hi, I am a coldfusion developer, but have now moved over to ASP.NET using VS2008 Pro, so trying to learn it quickly. My problem is that I have created a datasource with a simple query and when I run it in the query builder it works fine, however when I run it on the page I get nothing. Here is my query <asp:SqlDataSource ID="qAllTrucks" runat="server" ConnectionString="<%$ ConnectionStrings:ConnectionString %>" ProviderName="<%$ Con...Nest SQL queries
Hi,I have the followind code, which selects product categories and writes them to a <div> then for each product category, it also gets the associated products and writes them to a list inside the relevant div, so my output would be something like: ProductCategory number 1First product in category 1Second product in category 1Third product in category 1Product Category number 2First product in category 2Second product in category 2etc etcThe code is like this: SqlCommand comm_productcategory = new SqlCommand("SELECT productcategory_id,...SQL
Apologies for asking such a simple question, but here goes. I have two
tables, for the sake of argument call them a and b .
create table a
(id numeric, checkdate datetime)
create table b
(id numeric, a_id numeric, checkdate datetime)
I want to update the a table with the most recent checkdate of any related b
In Oracle, this would be
update a ta
set checkdate =
(select max(checkdate) from b tb
where tb.a_id = ta.id)
When I try to run this in Sybase, I get:
The column prefix 'ta' does not match with a table name or alias name used
in the query. Either th...SQL query that works in SQL Server Management Studio, but doesn't on .NET 2.0 page
SELECT favorites.FID, favorites.filename, favorites.username, files.status, files.private, files.views, files.title FROM favorites INNER JOIN files ON favorites.filename = files.filename WHERE (favorites.username = @username) AND (files.status IS NULL) AND (files.private = @private)@private is manually set to 'no'@username is set to profile.usernamewhen I run the above query in microsoft sql server mgmt studio express on the database, it presents all the information i'm asking for very easily. however when i try to implement this query on a aspx .net2.0 page with teh sqldatasourc...sql or my sql query
hi,in my database i have the two tables...1)programs 2)reservedin the programs...two fields 1)program id 2)maxseats................these details wil be entered by adminin the reserved table two fileds ..1)PRogramid 2)statusmy requirement is .. i need the available seats..meansif any body is intersted in any program...they wil select the program...then status becomes approved(1)..then i need the o/p as ...Nested Loop in SQL Query
Hi,I'm probably missing something obvious (either that or doing this totally wrong).I'm trying to use a nested loop to generate the following results:Unit Day1 Day2 Day3 Day4 Day5Name1 25 45 &n....net + dynamic SQL-query
On our page we have texbox, dropdownlist, database and gridview for it.It DropDownList we have all names of columns from database (in our situation they are Item_Name, Item_Type, City and Country). In database we have two more columns, but we do not need them in this task.And the task is to choose from DropDownList item/value and deliver it to SQL-query. We have done searching from database, but the column to search from is static, we want to make it dynamic, we want to choose from Dropdownlist column, from which we will search.We are making all in aspx, not in .cs code. We are not fam...sql datasource and update query
well i m using asp.net 2005 and sqlserver 2005,,i have a page called as sme_insert.aspx thr which user can enter new records for sme_id,name,no agency_id ,,etc..i have used sqldatasource and formview for tht,,,well for agency_id i have replaced the textfield with a dropdown list and it displays the agency_id values from the table sme_master..till now everything is working fine,,whn i go for inserting a new record and select a value from the dropdownlist,the value doesnot gets inserted in the table,,so everything is working fine except the dropdownlist,,,another prob is tht the dropdown list ...Select Query in SQL Datasource
Hi! I am using a oracle,
I put this code (below) to a sqldatasource control (Select Query)
SELECT A.part_no, (A.beg_invty_qty + A.qty) QTY, X.TT FROM inventory_master A, (SELECT C.part_no,TRUNC(((C.beg_invty_qty + C.qty) / DECODE(SUM(D.NEED),0,1,SUM(D.NEED))),2) TT FROM inventory_master C, pcs_header D WHERE C.part_no = D.part_no and (trunc(D.prodn_date) >= trunc(sysdate) and trunc(D.prodn...DataList Object with SQL Query
Hi All. I'm new to ASP and VB.net and I am trying to create a simple navigation menu from values populated from my department table in sqlexpress. Here is what i have and don't know what i'm doing wrong. Please help anyone. This code is in NavLeft.ascx<%@ Control Language="VB" AutoEventWireup="false" CodeFile="NavLeft.ascx.vb" Inherits="User_Controls_NavLeft" %><asp:DataList ID="NavLeft1" Runat="server" Font-Names="Arial" Font-Size="Small"ForeColor="Silver" W...