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Does the join order matter in SQL?
... FULL) OUTER joins, yes, the order matters - and (updated) things are much more complicated.
First, outer joins are not commutative, so a LEFT JOIN b is not the same as b LEFT JOIN a
Outer joins are not associative either, so in your examples which involve both (commutativity and associativity) pr...
How to retrieve a single file from a specific revision in Git?
...oot of the repository, not your current directory position.
(Although Mike Morearty mentions that, at least with git 1.7.5.4, you can specify a relative path by putting "./" at the beginning of the path. For example:
git show HEAD^^:./test.py
)
Using git restore
With Git 2.23+ (August 2019), you ca...
How can I get the root domain URI in ASP.NET?
...roved by adding the code that makes it work like the answer below that has more votes up...
– theJerm
Dec 20 '12 at 22:55
...
How to return an empty ActiveRecord relation?
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cocoapods - 'pod install' takes forever
...emove master also takes forever. But turns out I just need several minutes more to wait. Your needed time may vary because I don't know your pods configuration, but just give it more time.
– Chen Li Yong
Jan 7 '16 at 5:09
...
Why are variables “i” and “j” used for counters?
... That's a good question. I actually think that "i" might come from integer more than index. I also think it's easy to write on a chalkboard. Back in the 70's we were cautioned to be sure that we wrote our "i" and "j" in a perfectly distinctive manner. Indeed, we were told to draw our "i" exactly ...
BasicHttpBinding vs WsHttpBinding vs WebHttpBinding
...binding, which supports a ton of WS-* features and standards - it has lots more security features, you can use sessionful connections, you can use reliable messaging, you can use transactional control - just a lot more stuff, but wsHttpBinding is also a lot *heavier" and adds a lot of overhead to y...
Value Change Listener to JTextField
...ntioned in Jean-Marc Astesana's answer, where the document sometimes fires more events than it needs to.
Anyway, this method lets you replace annoying code which looks like this:
someTextBox.getDocument().addDocumentListener(new DocumentListener() {
@Override
public void insertUpdate(Docum...
Update a table using JOIN in SQL Server?
...data), you can use a CTE (common table expression) - see here and here for more details:
;WITH t2 AS
(
SELECT [key], CalculatedColumn = SUM(some_column)
FROM dbo.table2
GROUP BY [key]
)
UPDATE t1
SET t1.CalculatedColumn = t2.CalculatedColumn
FROM dbo.table1 AS t1
INNER JOIN t2
ON ...