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How can I do an UPDATE statement with JOIN in SQL Server?
... FROM clause for Postgres.
Oracle:
update
(select
u.assid as new_assid,
s.assid as old_assid
from ud u
inner join sale s on
u.id = s.udid) up
set up.new_assid = up.old_assid
SQLite:
update ud
set assid = (
select sale.assid
...
How to install plugin for Eclipse from .zip
...eans: your .zip file contains folders features and plugins, like this:
for new version Eclipse Plugin, it may also include another two files content.jar, artifacts.jar, example:
but this is not important for the plugin,
the most important is the folders features and plugins
which contains the ne...
What are the uses of “using” in C#?
...isposable (microsoft), the C# compiler converts
using (MyResource myRes = new MyResource())
{
myRes.DoSomething();
}
to
{ // Limits scope of myRes
MyResource myRes= new MyResource();
try
{
myRes.DoSomething();
}
finally
{
// Check for a null resource.
...
This Handler class should be static or leaks might occur: IncomingHandler
...ce;
IncomingHandler(UDPListenerService service) {
mService = new WeakReference<UDPListenerService>(service);
}
@Override
public void handleMessage(Message msg)
{
UDPListenerService service = mService.get();
if (service != null) {
se...
How to set default values in Rails?
... super(attr_with_defaults)
end
end
Then, when you do a GenericPerson.new(), it'll always trickle the "Doe" attribute up to Person.new() unless you override it with something else.
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impr...
What is the purpose of base 64 encoding and why it used in HTTP Basic Authentication?
...wered Nov 1 '10 at 16:10
Matt BridgesMatt Bridges
42.9k77 gold badges4444 silver badges5858 bronze badges
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How to “warm-up” Entity Framework? When does it get “cold”?
...ve for the duration of the context object life cycle as well as subsequent new object contexts.
Executing irrelevant queries will serve no other purpose than to consume system resources.
The shortcut ...
Skip all that extra work of pre-generated views
Create your object context
Fire off that sw...
How do I start Mongo DB from Windows?
...llow normal setup instructions
Step 6
Start RoboMongo and create a new connection on localhost:27017
Your MongoDB is started and connected with RoboMongo (now Robo 3T) - a third party GUI tool
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...
How can a Java variable be different from itself?
I am wondering if this question can be solved in Java (I'm new to the language). This is the code:
10 Answers
...
“Insert if not exists” statement in SQLite
...
What is the optimal way to then get the ID of the newly inserted row or the already existing one, so I can insert it to another table that has a foreign key to this one? e.g. I have two tables person (id, name unique) and cat (person_id, name unique) and I want to insert lo...