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add column to mysql table if it does not exist
...n run directly,
e.g. in mysql client
more elegant and concise SHOW COLUMNS does not work in stored procedure so have to use INFORMATION_SCHEMA
the syntax for delimiting statements is strange in MySQL, so you have to
redefine the delimiter to be able to create stored procedures. Do not
forget to swit...
Does PostgreSQL support “accent insensitive” collations?
...ction. (Would require to hack the C code itself.) The SQL wrapper function does that and allows both function inlining and expression indexes.
CREATE OR REPLACE FUNCTION public.immutable_unaccent(regdictionary, text)
RETURNS text LANGUAGE c IMMUTABLE PARALLEL SAFE STRICT AS
'$libdir/unaccent', 'u...
What does in XML mean?
...
does there have to be a new line character in between CDATA start and the raw data?
– Ben Sewards
Oct 20 '16 at 18:48
...
Why does this method print 4?
...stem (M, R, and P) and the stack size (X) affects cnt.
As a side note, it does not matter how much space catch requires to start. As long as there is not enough space for catch, then cnt will not increase, so there are no external effects.
EDIT
I take back what I said about catch. It does play a ...
Safely casting long to int in Java
... the most idiomatic way in Java to verify that a cast from long to int does not lose any information?
10 Answers
...
What is “callback hell” and how and why does RX solve it?
...h a simple example that explains what is a "callback hell" for someone who does not know JavaScript and node.js ?
8 Answers...
How does the static modifier affect this code?
...
What still confuses me is the fact that even though num1 does not have an explicit initialization, it IS (implicitely) initialized with 0. There should really be no difference between explicit and implicit initialization...
– isnot2bad
Nov 21 ...
In laymans terms, what does 'static' mean in Java? [duplicate]
...ccess it.
public class Foo {
public static void doStuff(){
// does stuff
}
}
So, instead of creating an instance of Foo and then calling doStuff like this:
Foo f = new Foo();
f.doStuff();
You just call the method directly against the class, like so:
Foo.doStuff();
...
'this' vs $scope in AngularJS controllers
...
"How does this and $scope work in AngularJS controllers?"
Short answer:
this
When the controller constructor function is called, this is the controller.
When a function defined on a $scope object is called, this is the "scop...
How does Amazon RDS backup/snapshot actually work?
...ings I've learned that might explain what you're seeing:
Although Amazon does not share the backend details 100%, we strongly suspect that they are using their EBS system to back RDS databases.
This article helps explain EBS limitations and snapshot functionality http://blog.rightscale.com/2008/0...