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Reference alias (calculated in SELECT) in WHERE clause
...
You can't reference an alias except in ORDER BY because SELECT is the second last clause that's evaluated. Two workarounds:
SELECT BalanceDue FROM (
SELECT (InvoiceTotal - PaymentTotal - CreditTotal) AS BalanceDue
FROM Invoices
) AS x
WHERE BalanceDue > 0;...
What is the ideal data type to use when storing latitude / longitude in a MySQL database?
...on of 5.6 when table type is MyISAM).
Note:
When using POINT class, the order of the arguments for storing coordinates must be POINT(latitude, longitude).
There is a special syntax for creating a spatial index.
The biggest benefit of using SDT is that you have access to Spatial Analyses Functions...
How can I get a list of Git branches, ordered by most recent commit?
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This is a colorized version including hashes, messages, ordered ascending based on commit date, with the relative age of the last commit on each branch. I stole all of the ideas from you guys above. It's in my .gitconfig in the [alias] section and I love it. br = for-each-ref --so...
Difference between object and class in Scala
...lass or trait.
When you do this, your object needs to extend some trait in order to become an instance of a subclass of it.
Consider the following code:
object A extends B with C {
...
}
This declaration first declares an anonymous (inaccessible) class that extends both B and C, and instantiat...
The maximum value for an int type in Go
...s additional math and bounds-checking to be performed by the processor, in order to emulate the larger or smaller integer. With that in mind, be aware that the performance of the processor (or compiler's optimised code) is almost always going to be better than adding your own bounds-checking code, s...
Vim Configure Line Number Coloring
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In order to get the accepted answer to work in my .vimrc I had to follow your advice and add it to the bottom. Can you explain why it has to be at the bottom?
– hidden-username
Oct 11 '15 ...
When is it better to use an NSSet over an NSArray?
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When the order of the items in the collection is not important, sets offer better performance for finding items in the collection.
The reason is that a set uses hash values to find items (like a dictionary) while an array has to iter...
Functional, Declarative, and Imperative Programming [closed]
...eclarative languages don't express control-flow other than nested function order (a.k.a logical dependencies), because due to immutability, other choices of evaluation order do not change the result (see below).
Declarative languages express logical "steps" (i.e. the nested RT function call order)...
How do I reattach to a detached mosh session?
...was checkpointed (the binary will resume, but communication will stop).
In order to fix this, you need to tell mosh to stop doing that and download the mosh source code. Then, edit this file:
cd mosh
vim configure.ac
Then, search for GETTIME and comment out that line.
Then do:
autoreconf # or ./a...
How to keep the console window open in Visual C++?
... version 2012 - I haven't yet tested 2013). This bug is detailed here.
In order to have the console pause after program termination on a makefile project, perform these steps (this may differ for versions other than 2010 - 2012):
1) Pass /SUBSYSTEM:CONSOLE to the linker. - EDIT: see below.
2) Ope...