How To Modify Sql Query Without Using Join Operation
Nov 18, 2010
The following query uses join operation, i want the same query to execute without using join operation. Is it possible to do so? If yes than how can i do it?select jname, jcode from heardt inner join judge ON heardt.jud1 = jcodThe reason i am trying to do this is because i am using odbc connection for mysql and join operations are not getting executed at all as web page is loading for infinitely long and not giving any output. That is the reason why i want to try without using join operation
To write a join query with or condition. It means a query has two inner join, here it is possible to fetch the records, if one inner join is true and other is false. I got a record when only two join conditions are true.
I executed the following sql command, and got error "Operation must use an updateable query.".
[Code]....
The database is access 2003. The tables are T1 (code (key), n) and T2 (code(key),num). Why do I get this error and how do I solve it? EDIT: Found solution somewhere else.
Dim roommates = From p In dbroom.Residents _ Where p.room = queryStudent.First.r.id _ Where p.building = queryStudent.First.b.id _ Where p.year = year _ Where p.semester = term _ Select p.person_name
It currently returns no results. I was getting an error when attempting to bind this resultset (since it was empty) to a repeater in ASP.NET, so I attempted to escape it:
If roommates.Count() = 0 Then Dim nomates As String = "No current roommates." rptrRoommates.DataSource = nomates rptrRoommates.DataBind() Else rptrRoommates.DataSource = roommates rptrRoommates.DataBind() End If
But I still get the same error:
The method 'First' can only be used as a final query operation. Consider using the method 'FirstOrDefault' in this instance instead.
I have one asp.net application , when i run this application in the visul studio it run successfully But when i deploy this aaplication and run from iis its show me this error: "Operation must use an updateable query" I am using VWD 2008 express edition database: Foxpro
i have two queries they are: query1: select CustID,NoOfChits from tblCust1 where [Group]='A' and CustID='a001' query2: select count(TKCustID) as Taken from tblAuctionGroup where [Group]='A' and TKCustID='a001'
Results of 1st query was: ---------- CustID NoOfChits a001 2
Results of 2nd query was: ---------- Taken 4
But i want to like below: -------------------------- CustID NoOfChits Taken a001 2 4
in the above queries, 1st query displayed two columns and 2nd query displayed one column. but i would like to append the both results in single table or single record, i mean all results should be in same row in same result.
We have two related tables (inventory, inventoryLocalization) and a t-sql query works on them as follows..
select inv.[code], coalesce(inL.name, inL2.name) as [name], coalesce(inL.description, inL2.description) as [description] from dbo.[inventory] inv left join dbo.[inventoryLocalization] inL on inv.code = inL.code and inL.language = 'de' left join dbo.[inventoryLocalization] inL2 on inv.code = inL2.code and inL2.language = 'en' where inv.[code] like '15.' + '%' order by inv.[code];
to performance improvement, we will try to use these tables from cache not from RDBMS directly. for an asp.net 4.0 project, by c#. We've took both tables to chache with a DataSet and we can reach both of them through that DataSet.
DataSet ds = UtilityCache.getCachedDataSet();
"ds.Tables[0]" is inventory Table and "ds.Tables[1]" is inventoryLocalization Table
But how can we convert above T-Sql syntax to linq2Sql. is it possible to use coalesce for select statement and to join on two tables with multiple conditions ?
i have a form that my i use to look up whether or not there is an email address in the database. i wrote a query with this basic structure:
select *
from table A, table B
where table A.email = "email" or table b = "email"
i though that would return all instances that the email occurred in either table. what i am getting back is a bunch of null or other unrelated records from table A with a matching email in table B. the thing is, these two tables primary key to join them. i thought i wouldnt need to do that though in this case.
here is the actually query i am using if it makes things more clear:
public ActionResult Index() { MembershipUser currentUser = Membership.GetUser(); Guid UserId = (Guid)currentUser.ProviderUserKey; using (var db = new MatchGamingEntities()) { var MyAccount = from m in db.Accounts..........
I want to be able to do a join query between my two tables Accounts and BankTransactions. This is a one to many relationship, there can be multiple BankTransactions per Account. I want to query this and display the account information including all the bank statements that are associated with it. I did a join in order to get it, but I am having trouble handling the model. I keep getting this error:
LINQ to Entities does not recognize the method 'System.Collections.Generic.List1[MatchGaming.Models.BankTransaction] ToList[BankTransaction](System.Collections.Generic.IEnumerable1[MatchGaming.Models.BankTransaction])' method, and this method cannot be translated into a store expression.
I've created a ssrs report using cube and i drag and drop the columns in the ssrs report and it works fine.Issue arise when i would like to update the mdx query. If i modify the mdx and try to save then it pops up a window with a message -"If you modify the MDX statement associated with this query and then return to design mode, your changes will be lost."After this message my changes get lost.Pls let me know how to make the changes in the MDX after designing a ssrs report.
I know I'm missing something here but I can't figure out what it is. I've got a query joining three tables....accounts, payments, and a table linking the two (there is a M:M relationship).I'm trying to pull a list of all accounts in the account table that have a payment that needs to be resequenced, and also the maximum payment priority if there are any payments that haven't been fully paid. If all payments HAVE been fully paid, I want to return a 0.
It's that last bit of logic that I can't get right. If I include that in the where clause, I get only the accounts that have a payment that hasn't been fully paid. If I take it out, I get all the accounts I get, but I get the highest payment priority whether or not the payment has been fully met.
Here is the query....how do I include the where clause criteria but still include all accounts?
Well I'm not familiar with SP's yet, and I can't find a single example of what I want to do. basically I want to retrieve the town & county where the customers id are equal (note there will only ever be 1 result)
I can't figure out how to address the results to be stored within the output variables.
in my case, It is the windows service which in running the long running insert/update on a table and I need to cancel the operation from my ASP.NET application. In the above link Burnsys suggests that one should kill the Sql server session. Is that really only way and a goood practice to do this? Also, in the same poset can use SqlCommand.Cancel to cancel. However, I am not sure how can I cancel the command from the windows service from ASP.NET application.
I'm trying to build a linq2Entity/gridview function for a forum, that draws data from multible tables.The result should be: Get the latest 10 threads that user(xx) has replyed in, that is not disabled or has a subject that is not allowed.Include information on the last post, thread owner user, and last post user, in each thread. ere is my code... is returns the correct threads and some that should not be there.
I have some text files I need to parse in order to display my data, and what I have now are two text files with lots of redundant data. Instead of this I would like to replace the redundant data with a number referencing the text in another text file.
For context: First of all, I am new to LINQ, as I have been using SubSonic for quite some time now.
I have two tables, Users, and Affiliates. They both have a very typical schema. The FK that joins them is the UserId field, which is in the Affiliates table. I want to create a LINQ query that pulls the Username from the Users table using the AffiliateId value. The AffiliateId is a primary key of the Affiliates table.
I have tried to accomplish this using many variations of the following code:
[Code]....
In the above query, I expect to get a single row result set. However, I instead receive the entire table of results.
How can I make this work? I have yet to see an example or article out there to do what I am trying to do.
I am using sql server 2005. In this query i want the log-in user detail should also display but it is not displaying . modify the query so that log-in user detail should also display with the help of session[userId].tostring(); Query written by me is:
SELECT DISTINCT MUDMEMBER.PK_ID, MUDMEMBER.EMPLOYEE_ID, LKB.BANK_NAME, MUHD.SALARY_ACCOUNT_NO, MUHD.PF_NO, MUHD.PAN_NO, MUHD.GENDER, LKD.DESIGNATION_NAME FROM M_LEADERLED MLL INNER JOIN M_USER_DETAILS MUDMEMBER ON MLL.LED_ID = MUDMEMBER.PK_ID AND MLL.START_DATE <= Getdate() AND MLL.END_DATE > Getdate() AND MLL.LEADER_ID = '1' LEFT OUTER JOIN M_USER_HR_DETAILS MUHD ON MUHD.FK_USER_ID = MUDMEMBER.PK_ID AND MUHD.IS_ACTIVE =1 LEFT OUTER JOIN LK_BANKS LKB ON LKB.PK_ID = MUHD.FK_BANK_ID LEFT OUTER JOIN LK_DESIGNATION LKD ON LKD.DESIGNATION_VALUE = MUHD.FK_DESIGNATION_VALUE AND LKD.FK_ORGANIZATION_ID = 1 AND LKD.IS_ACTIVE = 1 WHERE MUDMEMBER.ACTIVE = 1
I have a ADO.net query where one of the coulmns selected is datetime so the return value is '2011-02-16 14:53:57.750' How can i Modify the query to just get back to me with the date part only
