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.
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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.
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I have the below query which has left join and count in SQL. Please help me convert this SQL query to LINQ (using Entity frameowrk).
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I have the following LINQ query that does a left join:
var results = from v in ctx.dat_Visitor
join sp in ctx.vwSP on v.lu_Mentor.ID equals sp.ID into sp2
select new {
[code]...
My problem is that this LINQ query times out on me. I even upped the default timeout from 15 seconds to 120 seconds and it still times out. dat_Visitor has no more than 10 records in it, but vwSP (which is a view) has somewhere around 100,000 records. I know for sure that the timeout has to do with when I attempt to actually return sp2 in the results. If I change my LINQ query to not return sp2 in the results, then it is quick. Without sp2 the query looks like such:
var results = from v in ctx.dat_Visitor
join sp in ctx.vwSP on v.lu_Mentor.ID equals sp.ID into sp2
select new {
Visitor = v.Name,
Tot = sp2.Count()
};
Lastly, I'm using the 3.5 framework, but I am having serious thoughts about upgrading the website to 4.0, since I could then use DefaultIfEmpty().
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.
View 1 RepliesHow to use Left and Right Outer Join in C# using Linq with Eg.
View 2 Replieshow to do this query in EF1:
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I have 2 different datatables. 2 datatables from 2 different servers.
My first datatable is this:
SELECT DISTINCT a.name, a.create_date, a.Modify_Date, a.Object_Id
FROM dbname.sys.objects a
and my 2nd datatable is the same, but from a different server connection string
SELECT DISTINCT b.name, b.create_date, b.Modify_Date, b.Object_Id
FROM dbName.sys.objects b
Basically, I want to compare which procedures are on one server and not the other (dev and prod)
So after I have my 2 datatables i want to create a data relationship on the name and then do a left join to see whats in a and not b.
I have 9 tables i need data out of.. 8 of those tables will always just return 1 row of fields that i need. the 9th table can contain many records.. So what i need is a few fields out of each of the 8 tables and then ALL records from the 9th table.. so i know that because there will be multiple records in the 9th table returned, that the fields i pull from the other 8 tables will contain duplicate information and thats fine since i will be displaying the individual records from table 9 on their own page..So everything could be for the same vendor, except for the date in the 9th table that contains specific dates and details about each record returned.When i review the execution plan im getting an yellow exclamation icon on a nested inner join and has this message as the warning: No Join Predicate
Here is what i have, but is returning incorrectly, way to may records, seems to be stuck in a loop.. then below that, i have one that returns the correct number of records, but everything except one column is duplicate, all the TR columns should be unique in the values stored in them.. the rest should all be duplicates, just because its the same vendor, so all the other information will be generic information about that record.
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This FROM and WHERE return the correct number of records, but the fields are all duplicated except the last column with is transaction_date, seems that the 3 TR fields are being populated with the first records data or something.. not sure.
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i want to delete data from two table using left outer join..
here is my query:
delete from projects p LEFT OUTER JOIN emp_project empp on p.serial_no=empp.projectid where p.serial_no=7
but i am getting error:
Incorrect syntax near 'p'.
I'm having trouble doing a left outer join with multiple generic lists tables. I've been researching for hours and there isn't a whole lot out there on this subject and VB (at least what I found).
I have the following Linq query:
Dim DataForGridview = (From s In S1 _
Join c In C1 On c.ID Equals s.ID _
Join v In V1 On v.ID Equals s.ID _
Select New With { _
.dataFieldID = s.ID, _
.dataField1 = s.dataField1, _
.dataField2 = c.dataField2, _
.dataField3 = c.dataField3, _
.dataField4 = c.dataField4, _
.dataField5 = v.dataField5 _
}).ToList()
S1 has a count of 30. V1 has a count of 20. C1 has a count of 10. This query joins the three but ends up with a count of only 10 based on the datakey ID and, of course, only shows those 10 in the gridview.
I would like to show all 30 from S1 in the gridview with blank fields wherever V1 and C1 do not have data. From what I've read I need to do a left outer join. However, all examples I've found are with two datasets.
I've tried multiple times expanding on what I've found by changing it to a group join and also adding the .DefaultIfEmpty() property in the query, but nothing is working.
How can I change the above query to a left outer join with these multiple tables?
how to join 2 sql select statements in Oracle, which has different number of rows. That is I have first select statement which fetchs around 80 records in below format.
DATE MONEY
12-01-2010 10
12-01-2010 15
12-01-2010 15
12-02-2010 15
12-02-2010 15
12-03-2010 15
12-03-2010 15
Second statement will give reocrds like below. That is it will give only distinct dates. Please tell me how to join these two queries. So that I can get
DATE Rank
12-01-2010 a
12-02-2010 b
12-03-2010 c
how to join these two queries. So that I can get result set in below format.
DATE MONEY Rank
12-01-2010 10 a
12-01-2010 15 a
12-01-2010 15 a
12-02-2010 15 b
12-02-2010 15 b
12-03-2010 15 c
12-03-2010 15 c
i need to join two tables in different databases, how it can be done??? and if i want to use sqldatasource control to bind results to some data-bound control how can I configure my sqldatasource control???
View 3 RepliesIs the any term like Oracle Fragments.Someone asked me about oracle fragments and if we can join them and how. I din't knew about it.
View 1 RepliesI would like to create a gridview where all of the items in one table are listed and a checkbox is checked if that item also shows up in another table. The difficulty comes in the fact that table are not only in different databases, but possibly on different servers.
Is there any way to do this via ASP.NET connection strings, so that it doesn't matter where the databases live? I'd rather use connection strings, because I don't want to hard-code credentials into the queries (OPENROWSET or whatnot).
I am having an issue with a join statement. The join is based on the customer id in both databases, however, I just happen to have the exact same spelling for the email field which is contained in both the customer database and the office database. How do I display the proper email address. The email I am sending sends to the office email address rather than the customer address.
View 2 RepliesI need to join two tables accross two different databases and return an ADO dataset.
ie: select * from database1.table1 a inner join database2.table2 b on
a.key=b.key where some_condition=true
My main problem is how to specify the SqlCommand parameters specifically the connection string for both databses. Is this possible?
I have a gridview showing values from two tables accommodation and pic (left join on accommodation). If there is no pic uploaded I want to display the row without the pic. So in the gridview I first check to see if the picid is null, if it is i don't render any 'a href' code , if it's isn't i do.
The problem that i'm having is that instead of the image showing up in the gridview itemtemplate i get
','_blank','toolbar=no,menubar=no'))" >
Here is my .aspx code
SelectCommand="SELECT pic.picid, aspnet_Users.Username, accommodation.location, accommodation.type,accommodation.description, convert(varchar,accommodation.createdate,101) as createdate
i need join 3 tables using inner join...
View 6 Repliesi have a radiobutton list and i want the select statement of a SqlDataSource to change according to which radiobutton is selected. My code is as follows
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It is giving me the following error when i put jon in the Text Box provided for searching Incorrect syntax near 'kae'. Incorrect syntax near 'Jon'. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and
where it originated in the code. Exception Details: System.Data.SqlClient.SqlException: Incorrect syntax near 'jon''.Source Error:
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Line 29: query = query + "WHERE ([Ufname] LIKE '%'" + txtSrch.Text + "'%')";
Line 30: SqlDataSource1.SelectCommand = query;
Line 31: SqlDataSource1.Select(DataSourceSelectArguments.Empty);
Line 32: }
Line 33:
i am working with HQL in Nhibernate (in a C#.net Application )
i tried to implement this query
select distinct Course_Title from Course_Info join CMM_BatchCourse_Map on Fk_Course_Id= Course_Id where Fk_Batch_Id= (select Batch_Id
from CMM_Batch_Info where Batch_Title = 'BSC P1')
(THIS query is correctly in SQL SERVER )
but i tried to implement this in through HQL it gives semantic error
public IList<Course> GetByBatchName(string batchTitle)
{
ICriteria criteria = Session.CreateCriteria<Course>();
Session.CreateQuery("select distinct CourseTitle from Course join CMM_BatchCourse_Map on FkCourseId = CourseId where
Fk_Batch_Id= (select Batch_Id from CMM_Batch_Info where Batch_Title = 'BSC P1')" );
return criteria.List<Course>();
}
HOW TO WRITE THIS QUERY IN HQL ?
Im trying to retrieve a path name from my Pictures table the pathname is stored under picturepath in my Pictures table I dont know how to join it on to my current sql syntax it uses the UserID which is set by a session.
And im unsure what goes in the commented line for my image url string?
using (OdbcCommand cmd = new OdbcCommand("SELECT Wallpostings FROM WallPosting WHERE UserID=" + userId + " ORDER BY idWallPosting DESC", cn))
{
using (OdbcDataReader reader = cmd.ExecuteReader())
{
test1.Controls.Clear();
while (reader.Read())
{
System.Web.UI.HtmlControls.HtmlGenericControl div = new System.Web.UI.HtmlControls.HtmlGenericControl("div");
div.Attributes["class"] = "test";
//div.Style["float"] = "left";
div.ID = "test";
Image img = new Image();
img.ImageUrl = String.Format("{unsure}", reader.GetString(unsure));
// this line needs to be represented in sql syntax
img.AlternateText = "Test image";
div.Controls.Add(img);
div.Controls.Add(ParseControl(String.Format("{0}", reader.GetString(0))));
div.Style["clear"] = "both";
test1.Controls.Add(div);
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i already can't view with select new{} tags but i continued to try.
when i adding a new view, i selected PLAYER table then i wrote this code to view:
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i guess i can do this with "sql view" but i can't create view tables for everything.
I have 2 datatables and i would like to join these two tables based on same TemplateID in both the tables. How can i do it in c#.
View 3 RepliesI have multiple tables joined using inner join to the main table but one of the field in the main table details has a field ( languages )having data as (3,7,8) ... I need to display the corresponding language
select l.LANGuage from M_Language l where l.LID in(SELECT LANGUAGES FROM details WHERE memberid='000005' )
