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  • Load parent and child table in one query linq to entitiy

    - by parminder
    Hi Experts, I have a following tables/classes structure in Linq to entities. ` Books { bookId, Title } Tags { TagId Tag } BooksTags { BookId TagId } ' Now I need to write a query which gives me result like this Class Result { bookId, Title Tags } Tags should be comma separated text from the tags table by joining all three tables. How to get it done. Thanks Parminder

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  • Default Value or Binding in "Transfer SQL Server Object Task"

    - by Kronass
    Hi, I want to move 500 table from Database to other with their data and constraints all the tables have column who has default value, I used SSIS using "Transfer SQL Server Object Task" and I choose to copy all tables, copy data and primary keys, it copies the table except the default bindings I tried in SQL Server 2008 CopyAllDRIObjects Property but still the same result. How can I copy all tables from database to other with their data and maintaining their constraints.

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  • Get sum of two columns in one LINQ query

    - by Axarydax
    Hi, let's say that I have a table called Items (ID int, Done int, Total int) I can do it by two queries: int total = m.Items.Sum(p=>p.Total) int done = m.Items.Sum(p=>p.Done) But I'd like to do it in one query, something like this: var x = from p in m.Items select new { Sum(p.Total), Sum(p.Done)}; Surely there is a way to call aggregate functions from LINQ syntax...?

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  • Convert this Linq query from query syntax to lambda expression

    - by Jinkinz
    I'm not sure I like linq query syntax...its just not my preference. But I don't know what this query would look like using lambda expressions, can someone help? from securityRoles in user.SecurityRoles from permissions in securityRoles.Permissions where permissions.SecurableEntity.Name == "Unit" && permissions.PermissionType.Name == "Read" orderby permissions.PermissionLevel.Value descending select permissions There is a many-to-many relationship between users and security roles that makes this extra confusing. Thanks! Kelly

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  • sql to xml using linq - nested collections

    - by nelsonwebs
    I have a table of data that looks something like this. name, hour, price1, price2, price3, price4, price5 fred, 3, 12.5, 13.5, 14, 15, 16 dave, 6, 8, 12, 18, 20.2, 25 fred, 6, 10, 11, 14, 15, 19.7 This table needs to be output to an xml file that looks like this. <timeCost> <person name="fred"> <time hour="5"> <cost price="12.5" /> <cost price="13.5" /> <cost price="14" /> <cost price="15" /> <cost price="16" /> </time> <time hour="6"> <cost price="10" /> <cost price="11" /> <cost price="14" /> <cost price="15" /> <cost price="19.7" /> </time> </person> <person name="dave"> <time hour="6"> <cost price="8" /> <cost price="12" /> <cost price="18" /> <cost price="20.2" /> <cost price="25" /> </time> </person> </timeCost> I have a linq query to get the data from SQL something like this. // initialize data context var people = from p in dc.people orderby p.name, p.hour select p; However, I'm having trouble writing the xml out using linq (csharp). Specifically, the problem is I don't know how to deal with having multiple time nodes under each name node (nested loops/collections). How can this be done? This is a sql 08 ent db if it matters to anyone.

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  • How To Automatically Script SQL Server: 'Generate Scripts' for SQL Database

    - by skimania
    I want to run scheduled nightly exports of my database code into my SVN source. It's easy to schedule automated check-in's into svn from a folder, but scheduling the export from SQL in SQL Management Studio is Right click target database, choose Tasks Generate Scripts. Follow the wizard and presto you've got scripts in a folder. Is it possible to extract a single script that the wizard generates, and stuff that into a stored proc which I can run nightly? Ideas?

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  • LINQ: Create persistable Associations in Code, Without Foreign Key

    - by Alex
    Hello, I know that I can create LINQ Associations without a Foreign Key. The problem is, I've been doing this by adding the [Association] attribute in the DBML file (same as through the designer), which will get erased again after I refresh my database (and reload the entire table structure). I know that there is the MyData.cs file (as part of the DBML) in which I can place my partial extensions etc. to domain objects (to persist even after I refresh the DBML), but I don't know how to create an association there?

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  • Select most recent records using LINQ to Entities

    - by begemotya
    I have a simple Linq to Enities table to query and get the most recent records using Date field So I tried this code: IQueryable<Alert> alerts = GetAlerts(); IQueryable latestAlerts = from a in alerts group a by a.UpdateDateTime into g select g.OrderBy(a = a.Identifier).First(); Error: NotSupportedException: The method 'GroupBy' is not supported. Is there any other way to get do it? Thanks a lot!

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  • 'Contains()' workaround using Linq to Entities?

    - by jbloomer
    I'm trying to create a query which uses a list of ids in the where clause, using the Silverlight ADO.Net Data Services client api (and therefore Linq To Entities). Does anyone know of a workaround to Contains not being supported? I want to do something like this: List<long?> txnIds = new List<long?>(); // Fill list var q = from t in svc.OpenTransaction where txnIds.Contains(t.OpenTransactionId) select t;

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  • C# & ASP.Net - determine linq query generation time

    - by Chris Klepeis
    I'd like to detemine the amount of time it takes for my ASP.Net program to generate certain sql queries using linq.... note - I want the query generation time, not the query execution time. Is this possible, or even feasable (if its usually fast)? My website has some heavy traffic and I want to cover all of my bases.

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  • sql server: import operation won't copy full schema

    - by P a u l
    I recall that the import tool in sql server 2000 would copy indexes, relationships, etc. In sql server 2005/2008 the import tool in SSMS will only create the tables, copy the data, but the keys, indexes, relationships are missing. I can find no option in the import wizard to enable this? What am I missing here? Is this not possible anymore for any good reason?

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  • LINQ to SQL associations - how to change the value of associated field

    - by HAdes
    I have 2 classes with a LINQ association between them i.e.: Table1: Table2: ID ID Name Description ForiegnID The association here is between Table1.ID - Table2.ForiegnID I need to be able to change the value of Table2.ForiegnID, however I can't and think it is because of the association (as when I remove it, it works). Therefore, does anyone know how I can change the value of the associated field Table2.ForiegnID? Thanks.

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  • Add elements to XDocument after LINQ Query

    - by Jon
    I have the following XML LINQ query from my XDocument. var totals = (from x in MyDocument.Descendants("TOTALS") select x).FirstOrDefault(); Once I have found my totals node I need to add some elements to that node and push that change to the XDocument.

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  • update SQl table from values in excel

    - by user175084
    I am using the SQL Developer or SQl express. How do i get the values from an excel sheet and update those in a column of my database... Please help thanks. i have this and im running it but i get error: SELECT * FROM OPENROWSET('Microsoft.Jet.OLEDB.4.0', 'Excel 8.0;Database=C:\books.xls', 'SELECT * FROM [Sheet1$]') i get error now OLE DB provider "Microsoft.Jet.OLEDB.4.0" for linked server "(null)" returned message "Could not find installable ISAM.". thanks

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  • LinQ: Add list to a list

    - by JohannesBoersma
    I have the following code: var columnNames = (from autoExport in dataContext.AutoExports where autoExport.AutoExportTemplate != null && ContainsColumn(autoExport.AutoExportTemplate, realName) select GetDbColumnNames(autoExport.AutoExportTemplate, realName)).ToList(); Where the function GetDbColumns() returns an List<string>. So columNames is of the type List<List<string>>. Is it possible to create a List<string>, so each element of the list of GetDbColumns is added to the result of the LinQ query?

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  • Sql Server 2008 types in Sql CLR stored procedure

    - by BadEnglish
    I have Table-valued parameters in SQL Server 2008 e.g. CREATE TYPE UserType AS TABLE ( UserID int, UserName nvarchar(100), UserPassword nvarchar(100) ) Can i use this type somehow in my Sql CLR stored procedure? for example as input parameter ?? [SqlProcedure] public static void SomeFunction(/* what type should be here ?? */) { } Will be appreciate even for attention, let alone for any help !

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  • Dump Microsoft SQL Server database to an SQL script

    - by Matt Sheppard
    Is there any way to export a Microsoft SQL Server database to an sql script? I'm looking for something which behaves similarly to mysqldump, taking a database name, and producing a single script which will recreate all the tables, stored procedures, reinsert all the data etc. I've seen http://vyaskn.tripod.com/code.htm#inserts, but I ideally want something to recreate everything (not just the data) which works in a single step to produce the final script.

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  • SQL Server 2008: If Multiple Values Set In Other Mutliple Values Set

    - by AJH
    In SQL, is there anyway to accomplish something like this? This is based off a report built in SQL Server Report Builder, where the user can specify multiple text values as a single report parameter. The query for the report grabs all of the values the user selected and stores them in a single variable. I need a way for the query to return only records that have associations to EVERY value the user specified. -- Assume there's a table of Elements with thousands of entries. -- Now we declare a list of properties for those Elements to be associated with. create table #masterTable ( ElementId int, Text varchar(10) ) insert into #masterTable (ElementId, Text) values (1, 'Red'); insert into #masterTable (ElementId, Text) values (1, 'Coarse'); insert into #masterTable (ElementId, Text) values (1, 'Dense'); insert into #masterTable (ElementId, Text) values (2, 'Red'); insert into #masterTable (ElementId, Text) values (2, 'Smooth'); insert into #masterTable (ElementId, Text) values (2, 'Hollow'); -- Element 1 is Red, Coarse, and Dense. Element 2 is Red, Smooth, and Hollow. -- The real table is actually much much larger than this; this is just an example. -- This is me trying to replicate how SQL Server Report Builder treats -- report parameters in its queries. The user selects one, some, all, -- or no properties from a list. The written query treats the user's -- selections as a single variable called @Properties. -- Example scenario 1: User only wants to see Elements that are BOTH Red and Dense. select e.* from Elements e where (@Properties) --ideally a set containing only Red and Dense in (select Text from #masterTable where ElementId = e.Id) --ideally a set containing only Red, Coarse, and Dense --Both Red and Dense are within Element 1's properties (Red, Coarse, Dense), so Element 1 gets returned, but not Element 2. -- Example scenario 2: User only wants to see Elements that are BOTH Red and Hollow. select e.* from Elements e where (@Properties) --ideally a set containing only Red and Hollow in (select Text from #masterTable where ElementId = e.Id) --Both Red and Hollow are within Element 2's properties (Red, Smooth, Hollow), so Element 2 gets returned, but not Element 1. --Example Scenario 3: User only picked the Red option. select e.* from Elements e where (@Properties) --ideally a set containing only Red in (select Text from #masterTable where ElementId = e.Id) --Red is within both Element 1 and Element 2's properties, so both Element 1 and Element 2 get returned. The above syntax doesn't actually work because SQL doesn't seem to allow multiple values on the left side of the "in" comparison. Error that returns: Subquery returned more than 1 value. This is not permitted when the subquery follows =, !=, <, <= , >, >= or when the subquery is used as an expression. Am I even on the right track here? Sorry if the example looks long-winded or confusing.

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  • How do I properly use LINQ with MySQL?

    - by Arda Xi
    I've been looking this up on Google for hours, but I haven't found anything conclusive. So far, I've seen a few paid options, an option with NHibernate, but most are marked as unstable or in production. Is there a stable implementation of LINQ for MySQL?

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  • Linq with EF dynamic search

    - by malik
    I am using EF 3.5 with MVC. I want to made a search page, has some fields for criteria like date, int etc. What is the way in linq to entities to filter the result dynamically. If there are one parameter we can use .where(a=a.id==1) but many combination with optional param how can i load results and then pass to model.

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  • compiling a linq to sql query

    - by frenchie
    Hi, I have queries that are built like this: public static List<MyObjectModel> GetData (int MyParam) { using (DataModel MyModelDC = new DataModel()) { var MyQuery = from.... select MyObjectModel { ...} } return new List<MyObjectModel> (MyQuery) } } It seems that using compiled linq-to-sql queries are about as fast as stored procedures and so the goal is to convert these queries into compiled queries. What's the syntax for this? Thanks.

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  • Select into from one sql server into another?

    - by blasto
    I want to select data from one table (T1, in DB1) in one server (Data.Old.S1) into data in another table (T2, in DB2) in another server (Data.Latest.S2). How can I do this ? Please note the way the servers are named. The query should take care of that too. That is, SQL server should not be confused about fully qualified table names. For example - this could confuse SQL server - Data.Old.S1.DB1.dbo.T1.

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