DataSource Controls :: How To Select Multiple Columns Into IQueryable
May 18, 2010How do I select multiple columns into IQueryable<Employee>?
View 2 RepliesHow do I select multiple columns into IQueryable<Employee>?
View 2 Repliesthere are multiple rows with same SubContact_No and with same value of some columns. for a single column I am firing query like
Select distinct (Financial_Status) from mtblSub_Contract where SubContract_No=@SubContract_No";
it's working fine.... (it's ok with a Single column)
But Now I need multiple columns value so how to query for this.
Select distinct (Financial_Status, colums2, column3) from mtblSub_Contract where SubContract_No=@SubContract_No"; is not working
So how to do that.
This question is for wrapping up work on a database driven AJAX AutoComplete Control that I am using to provide keyword hints to user on search pages. Each record has 6 columns for keywords where each column is for an advertiser to add a keyword. These are used in meta keywords tags, but I also want to use them for AutoComplete. The problem is that I don't know how to write a SELECT statement in Visual Studio that treats all 6 keyword columns as if they were all one column. I am looking for something like
SELECT (keyword1 + keyword2 + keyword3) AS Keywords
FROM (Merchandise)
WHERE Keywords LIKE @term
The only other thing I can think of the gain this level of functionality would be to combine them into a new table.
If I have a linq statement like:
[Code]....
There may be a lot of data in the Blogs table. What if all I wanted was say BlogID, BlogTitle and BlogAuthor and nothing else, is there a way to do this in an effort to make the sql more efficent?
Along the same lines in my DataContext (.dbml) file I added some associations between some of my tables. This makes coding nice when I do a linq statement that will join those tables automatically for me but my concern is does it do that everytime, thus making all my linq quieries inefficient?
Is there a way to do a
"select * as"
and rename all columns with some prefix, rather than having to name columns individually? Or better yet, when doing a join and getting all columns from both tables, how do you identify them uniquely in the VB where some columns have the same name?
I would like to select some columns from a Datatable, I mean, something like Select Name, Surname, ID,
I'm trying to do something like this:
DataTable dtExcel = new DataTable();
DataRow[] buena = dtExcel.Select("NAME");
in order to get only a view or table with one column (NAME).
i have DateFrom and DateTo columns in tblLOgs.if they both are same then select only DateFrom else both selects.my procedure is ....do modification in them
[Code]....
I want use select * from sample (tablename) ,which returns only those columns from sample table which does not have xml data type.
note : sample table contains some columns which have xml data type .
is there a SQL statment i could write that would sum each column and allow me to then access each sum individually
i.e
Dim objCmd As New OleDb.OleDbCommand("SELECT SUM(expression) FROM orderForm WHERE OrderDate=@OrderDate", objConn)
is there anything i can replace expression with such that all the columns in orderForm could be summed and returned as one record
or is there a way to replace expression with something that would allow me to just keep changing the paramater so i could continuously reexectute the same command w/o having to create a new command for each column
I have two tables - dt(Mods) and dt(Mods2) - I am trying to create a relationship between them. So dt(mods) has department, category and item columns dt(mods2) has parentDept, Parentcategory and parentItems Now I need add them to a dataset with a relationship key - Something like this but with three cloumns
Dim ParentCol As New DataColumn, ChildCol As New DataColumn
how I add multi-column constraint to a table in SQL2005 ?
I want to prevent a user from entering a row in the table where Column_A = 1, Column_B = 2 etc where there is already a row where Column_A = 1, Column_B = 2.
how to write that below query in linq
DECLARE @Name varchar(20)
Select @Name = empFirstname+','+empLastName+','+empBankCode From srpEmployee
PRINT @Name
Is it possible in to set up an SQL table column to have multiple values? Or would I have to put my values into a new table and link it to the original one?
View 6 RepliesI have a Iqueryable problem
<%= Article.Replies.OrderBy(r => r.Created).First().Member.Username %>
I want to get the most recent Replies that is part of the Article
"Article.Replies" gets all the replies
So now I want to Order by Replies.Created by descending And then just take the first one from which i can get the members username fine. Im having a syntax problem with doing the orderby descending and by picking the first.
I am using System.Linq.Dynamic to create the following query at runtime:
[Code]....
I can then successfully display vMediaQ in a GridView.But I need to be able to access the individual fields (column headers and data) in vMediaQ, which is of type System.Linq.IQueryable.
I have 5 checkbox columns in my grid .. like
Id Chk1 Chk2 Chk3 Chk4 Chk5
I want select only one checkbox among 5 checkboxes if user selects one checkbox another which are checked are need to uncheck. How can i do this in client side .....
I have a query that joins two tables (in Linq) so I usethe result as an Iqueryable. I want the Query result to be displayed in a gridview, but for some reason I see nothing on the gridview.(I also tried without the join and just using the IQueryable result -and still nothing)
[Code]....
why is doesn't work, or link me to an examlple that is similar - (Also is there another way to use the result of a "join" not as IQueryable)
I've requirement where user can enter multiple columns like first name, lastname, email, age, sex fields and insert them into database.on my frontend aspx page, i'll be showing a single row initially with 5 text boxes(first name, lastname, email, age, sex) and a button to add more columns. when user clicks on add more, another 5 textboxes will be shown and then i'll be taking 5 + 5 (textbox values) and comma seperate them and need to insert into a table with primary auto increment key ID and the remaining 5 columns(firstname, lastname, email, age, sex). I previously worked on the same requirmeent but with only single column. Now i need to insert for 5 columns, How can i do this? Below is my stored proc which i used for single column insertion.
[Code]....
the best way to achieve the following:A products table linked to an images table where 1 product can have many images.Simple scenario is to select a product and its images using
select * from products where id=5
select * from images where pid =5
So far so good, its easily mapped to an object once the query has executed with ado.net.
what if i want to select all products and their related images and map them to a Product object, the result is as follows
SELECT * FROM PRODUCTS JOIN IMAGES ON ID=PID
Now the table I get is:
ID PRODUCTNAME IMAGEURL
1 COMPUTER IMAGE1.JPG
2 COMPUTER IMAGE2.JPG
3 COMPUTER IMAGE3.JPG
I would need to do some work in c# to keep track of id and get images until the id changes, if you get what I mean.
I want a way that I can execute a single query like the one above, or modifed version and make it easier to map the result to my objects.
Something like,loop products,map products to product object,loop images map images to products.images
if I have three Dropdownlist A, B, C, how can I write a select statement to get data from sql server based on the dropdownlist selected.e.g. if user select dropdownlist A, select * from table where A = dropdownlist A but if user select dropdownlist A and C, then select statment is "select * from table where A = dropdownlist A and B = dropdownlist B or if selected A, B, C.......how can I settle so many choice.
View 2 RepliesI need to write a select query where it will be doing "like" on one column with multiple strings.
Eg : Select * from tblCity where city like '%ABC%' and city like '%XYZ%'
I have set of strings.
I'm using ASP.NET MVC to create a small web apllication.
Here is my database And here is my class
[Code]....
[Code]....
I have a select statement that is supposed to be filling grid with information from an income table. It's only supposed to pull if the income is from the current fiscal year or is less than 1 year old. Currently, what it does is pull multiples of rows and also rows from past income years but only if there is a mixture. For instance, if a person has income from 2005 and 2010 what it will show is this
Income 2005
Income 2005
Income 2010
Income 2010
Income 2010
Does anyone know what I've done wrong? BTW, those results are exact, old income is shown twice, current is shown 3X
I am trying to write an app that has one gridview, but I change the select on my sql data source to show different information on the same grid. For example I start showing units, but when price is selected I reassign my select command from Select sales.[sales1] to Select (sales.[price] * sales.[sales1]) as sales1.
However, this is causing a problem that I cannot understand with the built-in edit functionality of gridview. Whenever I click on edit, all the data in my gridview reverts back to the original select and displays only units. Am I missing something? When I change my select command the only things I am changing are my gridview.datakeynames, sqlsource.selectcommand, and sqlsource.updatecommand. What do I need to add to make my gridview edit using the current selectcommand?
in asp.net page user able to select gridview Columns, and it will hide remaining columns and that selection done by check box with column list bellow is Image link , what exactly I am looking for [URL] it look bellow after selection of column done [URL]
View 1 Replies