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Linq to Sql: Multiple left outer joins
... .Where(s => s.Id == order.StatusId)
.DefaultIfEmpty()
select new { Order = order, Vendor = vendor, Status = status }
//Vendor and Status properties will be null if the left join is null
Here is another left join example
var results =
from expense in expenseDataConte...
IEnumerable vs List - What to Use? How do they work?
...some doubts over how Enumerators work, and LINQ. Consider these two simple selects:
10 Answers
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postgresql COUNT(DISTINCT …) very slow
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You can use this:
SELECT COUNT(*) FROM (SELECT DISTINCT column_name FROM table_name) AS temp;
This is much faster than:
COUNT(DISTINCT column_name)
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Bad class file magic or version
... an Android SDK you should specify at which SDK you refer... (In my case I selected Java 7 because I was using this version) But it depends in your case too. Search online for other errors with the same name, you'll find a lot of information
– Marco Acierno
Jan...
Where is debug.keystore in Android Studio
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EDIT
Step 1) Go to File > Project Structure > select project > go to "signing" and select your default or any keystore you want and fill all the details. In case you are not able to fill the details, hit the green '+' button. I've highlighted in the screenshot.
Step ...
How to enable local network users to access my WAMP sites?
...y >> Windows Firewall then
click on “Advance Setting” and then select “Inbound Rules” from the
left panel and then click on “Add Rule…”. Select “PORT” as an option
from the list and then in the next screen select “TCP” protocol and
enter port number “8081” und...
How to create relationships in MySQL
...s defined as the default storage engine,can check using command (mysql> SELECT @@default_storage_engine;)
– Arun
Feb 18 at 4:00
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Simple way to convert datarow array to datatable
...For .Net Framework 3.5+
DataTable dt = new DataTable();
DataRow[] dr = dt.Select("Your string");
DataTable dt1 = dr.CopyToDataTable();
But if there is no rows in the array, it can cause the errors such as The source contains no DataRows. Therefore, if you decide to use this method CopyToDataTable...
How to implement classic sorting algorithms in modern C++?
...ed and hybrid amalgamation of more elementary sorting algorithms , such as selection sort, insertion sort, quick sort, merge sort, or heap sort.
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How to identify all stored procedures referring a particular table
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SELECT Name
FROM sys.procedures
WHERE OBJECT_DEFINITION(OBJECT_ID) LIKE '%TableNameOrWhatever%'
BTW -- here is a handy resource for this type of question: Querying the SQL Server System Catalog FAQ
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