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How to reset postgres' primary key sequence when it falls out of sync?
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-- Login to psql and run the following
-- What is the result?
SELECT MAX(id) FROM your_table;
-- Then run...
-- This should be higher than the last result.
SELECT nextval('your_table_id_seq');
-- If it's not higher... run this set the sequ...
Join/Where with LINQ and Lambda
I'm having trouble with a query written in LINQ and Lambda. So far, I'm getting a lot of errors here's my code:
9 Answers
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Oracle “(+)” Operator
I am checking some old SQL Statements for the purpose of documenting them and probably enhancing them.
4 Answers
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How to drop column with constraint?
...ect_id
WHERE
dc.parent_object_id = OBJECT_ID('tbloffers')
AND c.name = N'checkin'
IF @@ROWCOUNT = 0 BREAK
EXEC (@sql)
END
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Removing App ID from Developer Connection
...ortal area? I mistakenly added a couple of app id's under the wrong login and would like to remove them, but I am not seeing a way to do so.
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Check if object value exists within a Javascript array of objects and if not add a new object to arr
... answered Apr 3 '14 at 17:21
AndyAndy
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COUNT(*) vs. COUNT(1) vs. COUNT(pk): which is better? [duplicate]
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Bottom Line
Use either COUNT(field) or COUNT(*), and stick with it consistently, and if your database allows COUNT(tableHere) or COUNT(tableHere.*), use that.
In short, don't use COUNT(1) for anything. It's a one-trick pony, which rarely does what you want, and in those ...
How do SQL EXISTS statements work?
I'm trying to learn SQL and am having a hard time understanding EXISTS statements. I came across this quote about "exists" and don't understand something:
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How can I retrieve Id of inserted entity using Entity framework? [closed]
...ted Ids (like IDENTITY in MS SQL) you just need to add entity to ObjectSet and SaveChanges on related ObjectContext. Id will be automatically filled for you:
using (var context = new MyContext())
{
context.MyEntities.Add(myNewObject);
context.SaveChanges();
int id = myNewObject.Id; // Yes it...
Getting the thread ID from a thread
...t work with managed threads, I'm sure, all you need to find is the thread handle and pass it to that function.
GetCurrentThreadId returns the ID of the current thread.
GetCurrentThreadId has been deprecated as of .NET 2.0: the recommended way is the Thread.CurrentThread.ManagedThreadId property.
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