Whenever you use SingleOrDefault, you clearly state that the query should result in at most a single result. On the other hand, when FirstOrDefault is used, the query can return any amount of results but you state that you only want the first one. If your result set returns 0 records: Single throws an exception First throws an exception SingleOrDefault returns the default […]
Tag: single
How to apply two classes to a single element in CSS
Let’s say you want to use 2 or more classes for a div. Then you should use these classes inside the class attribute, separated by whitespace: <div class=”myFirstClass mySecondClass”></div> To target elements that contain all of the specified classes, use this CSS selector (no space) in your CSS file: .myFirstClass.mySecondClass {}
Using View Model to pass Multiple Models in Single View in MVC
In MVC we cannot pass multiple models from a controller to the single view. There are a few solution for that problem. But in this article we will use View Model. Here is the solution:
How do you connect to multiple MySQL databases on a single webpage?
You can make multiple calls to mysql_connect(), but if the parameters are the same you need to pass true for the ‘$new_link‘ (fourth) parameter, otherwise the same connection is reused.
How to concatenate text from multiple rows into a single text string in SQL server?
STUFF((SELECT ‘, ‘+ Column1 FROM Table1 FOR XML PATH(”)),1,1,”) AS ConcatenatedColumn StudentName ————- Mary John Sam Alaina Edward Result: Mary, John, Sam, Alaina, Edward
Replace duplicate spaces with a single space in SQL
SELECT REPLACE(REPLACE(REPLACE(‘ With this query you select single spaces’,’ ‘,'<>’),’><‘,”),'<>’,’ ‘) OUTPUT: With this query you select single spaces