Sql Server - Converting Complex Sql Stored Proc Into Linq
Jan 24, 2011
I'm using Linq to Sql and have a stored proc that won't generate a class. The stored proc draws data from multiple tables into a flat file resultset. The amount of data returned must be as small as possible, the number of round trips to the Sql Server need to be limited, and the amount of server-side processing must be limited as this is for an ASP.NET MVC project. So, I'm trying to write a Linq to Sql Query however am struggling to both replicate and limit the data returned. Here's the stored proc that I'm trying to convert:
[Code]....
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Nov 4, 2010
I am using vs2008 making an asp.net.vb app. The following stored procedure resolutely insists on returning an integer. I on the other hand was hoping for, and expecting, a single name to be returned. Can anyone help amend the sp or describe what I need to do to get the result I desire.
ALTER PROCEDURE [dbo].[getusername]
(
@email varchar ,
@retvalue nvarchar (10)output
[code]...
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Jun 17, 2011
I'm having troble getting my code to recognize the parameter for my Stored Procedure.This code below show how I select my files (commented out all other files to make sure one works first)It selects my files through the OpenFileDialog box, it loads the name & location of the csv file into memory and then I want to run a SP to import the csv into my database. I have set the SP up ok as it works through SSMS. [code]
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Oct 6, 2008
Has anyone updated a proc in code, outside of SSMS? It's easy enough to change the stuff after the ALTER statement, but what I can't figure out how to change the comments before it.
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Mar 12, 2009
first of, here's what i'm using.
Visual Basic 2005 Express Edition
Oracle Database 10g Express Edition
i created a procedure stored in the oracle database create_user and accepts a few parameters...
procedure create_user
( p_user_num out tbl_users.user_num%type
,p_username in tbl_users.username%type
[Code].....
so i run the form, click the AddNew button in the BindingNavigator, enter the data in the textboxes and then click Save. i receive no error but the values of the textboxes are not being passed to my stored procedure. it is creating records but all columns are null.
i checked this by using an SQL Editor to query the table back-end.
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Dec 7, 2010
Currently I have the following in default.aspx
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Jun 9, 2011
I need to call a stored proc from a .NET web page which takes around 15 min to process. We do not want user not to be able to browse the website in the meanwhile. Is calling it asynchronously the way to go or are there any other recommended ways?
make an asynchronous stored proc call?
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Mar 18, 2010
retrieve the actual T-SQL that is to be executed by a SqlCommand object (with a CommandType of StoredProcedure) before it executes...My scenario involves optionally saving DB operations to a file or MSMQ before the command is actually executed. My assumption is that if you create a SqlCommand like the following:
Using oCommand As New SqlCommand("sp_Foo")
oCommand.CommandType = CommandType.StoredProcedure
oCommand.Parameters.Add(New SqlParameter("@Param1", "value1"))
oCommand.ExecuteNonQuery()
End Using
It winds up executing some T-SQL like:
EXEC sp_Foo @Param1 = 'value1'
Is that assumption correct? If so, is it possible to retrieve that actual T-SQL somehow? My goal here is to get the parsing, validation, etc. benefits of using the SqlCommand class since I'm going to be using it anyway.
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Apr 19, 2011
<div class="body">
I am developing an ASPX file that returns results from a SQL stored proc into a data adapter, which is then displayed in a GridView. But the problem is that the numbers do not match between the SQL stored proc and Gridview. They are close, but are off just slightly: 3 thousandths. So the SQL Stored proc gives me 0.199, but in Gridview this same value = .203. And it doesn't appear to be a rounding issue either. Also, I looked at the Gridview properties, but I didn't see anything that would be causing this. All of the values for this one column are off by the same margin.
What troubleshooting steps can u recommend? I am using VB in a VS 2008 Shell for SSRS, SSIS. Here is my code from the main ASPX file:
<%@ Page Language="VB" Debug="true" Src="../Global.vb"%>
<%@ Import Namespace="ChartDirector" %>
<%@ Import Namespace="System.Data" %>
[CODE]..................
And portions of the global.vb file:
Namespace GlobalFunctions
Public Class GlobalF
[CODE]................
I would like to debug this, but this is the shell and so I don't seem to have the debug options. I can set breakpoints, but all of the Debug functionality is greyed out. This may be because I can only create SSAS/SSIS/SSRS projects
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Apr 18, 2011
I am developing an ASPX file that returns results from a SQL stored proc into a data adapter, which is then displayed in a GridView. But the problem is that the numbers do not match between the SQL stored proc and Gridview. They are close, but are off just slightly: 3 thousandths. So the SQL Stored proc gives me 0.199, but in Gridview this same value = .203. And it doesn't appear to be a rounding issue either. Also, I looked at the Gridview properties, but I didn't see anything that would be causing this. All of the values for this one column are off by the same margin.
What troubleshooting steps can u recommend? I am using VB in a VS 2008 Shell for SSRS, SSIS. Here is my code from the main ASPX file:
[Code]...
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Jul 28, 2010
I have a stored procedure that I need to execute from asp.net button , It takes more than 30 mins to execute.
So here I need to show a message like "In Process" while execution and disable couple of links..Once the execution is done I need to show "Last processed data and time" and enable the disabled links.
So in "In Process" stage we have to allow user to access other pages in the site.
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Oct 7, 2009
Why is this not working for me? What is wrong with my code below? I am trying to read a stored proc and applying values to labels. Getting error that say "Incorrect syntax near CareerInner".........
Private Sub LoadData()
' Define data objects
Dim conn As SqlConnection
[Code]......
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Oct 31, 2005
things look good till I reach the Bind Commands to Existing Stored procedures page of the wizard and I select my target spproc (rpt_IPR_...) then I hit the finish button and see the message: invalid object name '#TmpResults' now the dataset seems to setup correctly but was wondering why we are getting this message and should I be concerned. The same proc in Access had no issues. [Code]
Because we where not seeing info on the spproc parms we began to suspect that the query made by the IDE to get metadata was failing and that indeed is the case. (we also switch to non-production database to reproduce the issue)after some great SQL debugging from Kevin Currier here at Mindsolve the problem seems to be the SET FMTONLY OFF; SET FMTONLY ON; that the framework is using to get metadata info for the [Code]
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Oct 5, 2009
What I need to do, is to call a SQL stored procedure from VB.NET, and then store the returned query value in a string.
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Feb 9, 2012
I would like to know if there is any simple/fast way to create a complex XML file, when I say complex, I mean more than 20 elements encapsulated. Although this is VB.net,unfortunately literals will not work in this case
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Apr 1, 2009
I have an XML File that I am processing using LINQ. I want to basically serialize the XML data into custom objects but don't know how.
[Code]...
How can I finish the above LINQ query to populate the Children property of the Group object?
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Jun 7, 2011
I have a storedproc accepts parameters in XMLtype as
CREATE OR REPLACE PROCEDURE GetDetails(
p_para IN XMLTYPE,
[code].....
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Oct 5, 2010
I have a collection as follows
Private _bankRates As Dictionary(Of RateSourceBank.Key, RateSourceBank)
Where RateSourceBank.Key is simply
Public Class Key
Public RateType As String
Public EffectiveDate As DateTime
[Code].....
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Jun 28, 2010
This question is very similar to a previous question of mine, Use LINQ to count the number of combinations existing in two lists, except with some further twists.
I have a list of CartItems that can receive a discount based on the items specified in the list of DiscountItems. I need to be able to pull out the items in the Cart that can receive a discount and apply the appropriate discount specfied in the DiscountItem. The discount is only applied for each combination that exists. Here's what the two lists might look like to before the discount is applied[code]...
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Aug 6, 2009
if there is that much of a performance gain in running a LINQ stored procedure versus a LINQ query?
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Sep 14, 2010
I have to join two main tables, and I need to filter the results by elements in an ASP.NET web form. These filters are created on the fly so I have to use a lot of where extensions to filter the query. I want to execute the query with as optimized SQL as possible.
I am first doing a simple join between TW_Sites and TW_Investigators. Then there are two sub-tables that are involved. TW_InvestigatorToArea and TW_InvestigatorToDisease. While most of the where clauses are working fine, I have found a performance issue that won't be an issue right now, but will be an issue as the table gets bigger.
The arrays DiseaseCategories and DiseaseAreas would be the results of a CheckBoxList result.
Protected Sub LoadResults()
'Get Dictionary of Filters
Dim FilterDictionary As OrderedDictionary = Session.Item("InvestigatorFilterDictionary")
' Initialize LinqToSql
[code]....
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Sep 5, 2011
I have Country=>Ligue=>Team(Name, Score)I need to select all team Name-Scores from a country.
something like this, does not work )
query = from ligue in myCountry.Ligues, from team in ligue.Teams
select name = team.Name, score = team.Score distinct
[code]....
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Sep 7, 2010
I am using stored procedures in my application using vb.net, while executing stored procedures on mysql database server thru application, the response time from the server is more. Is there any settings that i need to set on mysql db server or any changes in connection string or in code.
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Jun 9, 2011
I am developing a Windows application for restoring specific databases from our Production platform to "field" tablets by using backups that are taken daily to disk. To preclude "orphaned users" on the tablets, I want to extract the "user name", "password" (hashed) and "sid".I am calling the MS Stored Procedure "revlogin" that produces screen text to copy and paste into a query to recreate those users on another SQL server instance.
IF (@denylogin = 1)
BEGIN -- login is denied access
SET @tmpstr = @tmpstr + '; DENY CONNECT SQL TO ' + QUOTENAME( @name )
[code].....
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Jun 9, 2010
I am new to LINQ and trying to learn it. I have a stored proc which returns XML Raw and I need to call this proc using VB.NET and LINQ...
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Oct 21, 2008
I am trying to use stored procedures with LINQ to SQL to perform insert, update, and delete operations. My update and delete procedures implement optimistic concurrency by checking the original values retrieved from the database with the current values in the database. A row count is returned to indicate if the row was updated. When I execute SubmitChanges on the data context to update the database, everything works fine except that the generated code doesn't check for concurrency. (I configured the insert, update, and delete operations to use the data context methods created from the stored procedures using the O/R Designer, and I assigned the original object properties to the method arguments.) I can customize the generated code so it works properly, but I know that I shouldn't do that because I'll lose the changes if the code is regenerated. I also know that I can add a partial class to extend the data context, but I don't know how to implement the methods correctly. All I really need to do is to have the methods return the row count, but, of course, that's not an acceptable method overload. I know that I can also call the methods directly rather than calling SubmitChanges, but it seems like this is intended to work with SubmitChanges.
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Apr 12, 2011
I'm in the process of teaching myself C# by converting an existing project and am stuck converting the following vb linq code:
Dim outStuff = From tt In (From t In Products.SelectMany(Function(p) If(p.tags IsNot Nothing, p.tags, New ObservableCollection(Of TagModel)))
Group By tagName = t.name,
v = (Aggregate p In Products Where If(p.tags IsNot Nothing, p.tags.Contains(t), Nothing) Into Sum(p.views)),
nl = (Aggregate p In Products Where If(p.tags IsNot Nothing, p.tags.Contains(t), Nothing) Into Sum(p.num_likes))
[Code]...
var x = Products.SelectMany(p => (p.tags != null) ? p.tags : new ObservableCollection<TagModel>());
var tags = from t in x group t by t.name into g select new { tagname=g.First().name};
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Dec 1, 2009
I'm converting the Linq query below from C# to VB.Net. Can you spot my error? The query joins 3 XML datasets. C# - This one works great.
List<Course> courses =
(from course in CourseXML.Descendants(ns + "row")
join coursecategory in CourseCategoryXML.Descendants("Table") on (string)course.Attribute("code") equals (string)coursecategory.Element("DATA")
[code]....
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Apr 24, 2012
I need help converting datatable to xml using Linq. I could do it with hardcoded column names as you can see in my code .. but i need it without hardcoding it ..Example datatable ..My linq query ..
Dim xmlDoc As New XDocument(
From row In dt.AsEnumerable()
From row In dt.AsEnumerable()[code]......
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Nov 18, 2010
I'm having a little trouble converting some LINQ to VB.[code]Online code translators are not helping, and my unfamiliarly with VB LINQ is not very good.
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