generate good performance SQL in complex query scenarios, and I believe that students who have used EF must have this experience: "I think about how SQL writes, and then I write Linq, It's over. You may also want to see what SQL output of Linq is like. " It was a very bad ...
linq.iqueryable Cannot pass list of objects from view to controller via Ajax Cannot perform runtime binding on a null reference. Why? Cannot perform runtime binding on a null reference'. Cannot print when hosting in IIS Cannot redirect after HTTP headers have been sent. Cannot use a lambda ...
computing sum for datatable column of type string Concatenate string and use as variable name Conditionally include a where clause in linq query Configuration Error :The element 'buildProviders' cannot be defined below the application level. Configuration error authentication mode="Windows" Configuring...
and if you wanted to move an app from Oracle to SQL Server, you would have to change a number of the queries. With the EF, the queries are written in LINQ or Entity SQL and then translated at runtime by the providers to the particular...
Why didn't you use T-SQL/PL-SQL/my-favorite-dialect-of-SQL? Perhaps I (or others) could answer the question about specific features of LINQ syntax and why certain design choices were made for the minor matter of being consistent with the domain (objects) host programming language...
that I know about LINQ is that if the Developers don't know what they're doing, virtually every parameter passed to the database is NVARCHAR(), which makes a whole lot of the code non-SARGable due to "implicit casts". More specifically, I believe it was a product called LINQ2SQL, ...
using System.Linq; class Program { static void Main(string[] arguments) { } } … which doesn’t compile. Which is better, generating code that doesn't compile, or omitting the using directives and making you type "using System;" the first time you try to use Console.WriteLine? Either...
This information may be stored using a relational database management system such as LINQ or SQL. 3. SaaS. For smaller and/or newer ecommerce businesses, an out-of-the-box ecommerce solution may be a better fit. This kind of architecture uses Software as a Service (SaaS), which hosts ...
The DATE datatype is datatype in SQL Server. Not all client side languages will have have an equivalent datatype. You could store it in a datetime on the client and make sure the time is midnight, or move it to a string (but then you would lose the ability to use the functionality ...
To this SQL: selectcount(*)fromProductswhereCategoryId = 1 With the approach that the EF uses, they will have to load the entire collection. But all of those are just optimizations, not the make-or-break for the feature. Here is a common scenario that is going to break it: ...