How to log queries using Entity Framework 7?

Log Queries executed by Entity Framework DbContext

You can use this line to log the SQL queries to the Visual Studio "Output" window only and not to a console window, again in Debug mode only....public class YourContext : DbContext { public YourContext() { Database.Log = sql => Debug.Write(sql); } }

Entity Framework, Load multiple entities by primary key in a single query while still using caching

Not implicitly....Where()... will always query the database. To explicit query the cache you need to use ....Local...: ...dbContext.Entity.Local.Where(......This will not hit the database but it will only return entities that have been cached/loaded before....Good to know: to view the queries define a Log function like this: ...dbContext.Database.L...

Entity Framework Core: Log queries for a single db context instance

Call ...DbContextOptionsBuilder.UseLoggerFactory(loggerFactory)... method to log all SQL output of a particular context instance. You could inject a logger factory in the context's constructor. ...Here is a usage example:...//this context writes SQL to any logs and to ReSharper test output window using (var context = new TestContext(_loggerFactory)...

Log Insert and Update Command sql query in Entity Framework

You would have to use more sophisticated mechanisms than just ...context.Database.Log... : ...https://msdn.microsoft.com/en-us/library/dn469464(v=vs.113).aspx...Apart from mentioned ...context.Database.Log... there is also ...DatabaseLogFormatter... and ...IDbCommandInterceptor.... Here is an example from the link: ...public class NLogCommandInterc...

Change logging level of SQL queries logged by Entity Framework Core

Since Entity Framework Core 3.0 it's possible to change to logging level of SQL queries. During to 3.0 previews all query execution logging was changed to ...Debug... by default. Later this change got reverted and now it's configurable....To do this override ...OnConfiguring... in your ...DbContext... and run the following snippet:...protected over...

Log DbContext.SaveChanges Exception to the database in Entity Framework/Entity Framework Core

In try block you are adding some changes to db context. While saving you got some exception and using the same db context in catch block to log that exception. Here the db context still has unsaved changes made in try block. So you will get the same exception while saving the context. ...To avoid this you have to discard the changes from db context...

One LINQ query to get counts from several entities when using entity framework core

That's a one LINQ query solution, i hope this will be helpful,...var result = Context.UserAccounts.Select(x => new List<int>() { 1, 0, 0, 0 }).Union(Context.GuestAccounts.Select(y => new List<int>() { 0, 1, 0, 0 })) .Union(Context.WorkGroups.Where(x => x.IsActive).Select(z => new List<int>() { 0, 0, 1, 0 })).Union(Context.WorkItems.Sele...

Is there a way to make the faster ordered SQL TOP 1 query as Entity Framework query?

For this query:...select top (1) m.* from movies m where m.Distributor = 'any' order by m.IMDB_Rating desc; ...You want an index on ...movies(Distributor, IMDB_Rating desc).......I cannot speak to why the second version would be faster.

Logging Sql queries in log file using EF core and Log4net

You can try the following within your DbContext class:...private readonly ILogging _logger = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType); public MyContext(): base("<connectionstring>") { Database.Log = log => _logger.Debug(log); } ...There is already a quite similar answer that might help you further. Take a look at the fo...

Linq inner query in join with entity framework, query error

You are left join results from a inner join. I am thinking that is missed in your c# code. But that is not the case for exception....you may try like this....var result = from ca in _dbcontext.CustomerAircrafts //// here join the inner join join pta in (from f in _dbcontext.AircraftPrices join pt in _dbcontext.PricingTemplate on ap.Pri...