where-clause

If you create a Filter object that contains criteria for Linq that normally goes in a where clause like this: var myFilterObject = FilterFactory.GetBlank(); myFilterObject.AddCondition("Salary", "lessThan", "40000"); var myResult = myRepository.GetEmployees(myFilterObject); How would you match the Linq field to the Field Name without using a big case statement? return from e in db.Employee where e.Salary < 40000 select new IList<EmployeeViewModel> { Name= e.name, Salary= e.Salary }; I assume you need to send an object to the Repository that specifies filtering so that you only pull what

I was making some tests, and it was a surprise when i was querying a table, and the query SELECT * FROM table WHERE email=0 returned all rows from the table. This table has no '0' values and it's populated with regular e-mails. Why this happens? This can lead to serious security problems. Is there a way to avoid this without modifying the query? Am i missing something here? Thanks. This is because it is converting the email field (which I assume is a varchar field) to an integer. Any field without a valid integer will equate to 0. You should make sure that you only compare string fields to

Suppose I have two tables that are linked (one has a foreign key to the other) : CREATE TABLE Document ( Id INT PRIMARY KEY, Name VARCHAR 255 ) CREATE TABLE DocumentStats ( Id INT PRIMARY KEY, DocumentId INT, -- this is a foreign key to table Document NbViews INT ) I know, this is not the smartest way of doing things, but this is the best example I could come up with. Now, I want to get all documents that have more than 500 views. The two solutions that come to my mind are : SELECT * FROM Document, DocumentStats WHERE DocumentStats.Id = Document.Id AND DocumentStats.NbViews > 500 or : SELECT *