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Why can't I use an alias in a DELETE statement?
...ews to get a reduced set of rows. E.g. delete o from Order as o inner join Customer as c on c.CustomerID = o.CustomerID where c.ArchiveOrders = 1
– Andrew Jens
Aug 31 '17 at 2:03
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I need to store postal codes in a database. How big should the column be?
...ode it really doesnt matter. Slightly too big is better than annoying one customer because they cant input their details.
– Toby Allen
Nov 28 '08 at 7:42
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Pass variables to Ruby script via command line
...cond_meet Have you met before?
# @option options [String] :prefix Your custom prefix
def say_hello(name, options = {})
second_meet = nil
second_meet = 'Nice to see you again!' if options['second_meet']
prefix = options['prefix']
message = @hello_msg + ', '
messa...
What is a clean, pythonic way to have multiple constructors in Python?
...
if num_holes is None:
# Construct a gouda
else:
# custom cheese
# common initialization
For really complex cases with lots of different constructors, it might be cleaner to use different factory functions instead:
@classmethod
def create_gouda(cls):
c = Cheese()
...
Django queries - id vs pk
...mes faster. From the other hand, if you want universal access to (probably custom) primary key fields, then use pk everywhere. A third of a microsecond is nothing for web.
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Import Maven dependencies in IntelliJ IDEA
...endencies can be fetched.
Of course all the required dependencies and any custom repositories must be defined directly in the pom.xml file.
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Java 8 stream reverse order
...ible to write a much more efficient reversing collector using some kind of customized data structure.
UPDATE 2016-01-29
Since this question has gotten a bit of attention recently, I figure I should update my answer to solve the problem with inserting at the front of ArrayList. This will be horribl...
Why would a static nested interface be used in Java?
...one class.So to summarize, an inner interface enables the construction of custom types and improves their encapsulation.
class ConcreteA implements A {
:
}
class ConcreteB implements B {
:
}
class ConcreteC implements C {
:
}
class Zoo implements A, C {
:
}
class DoSomethingAlready {
int...
In C# what is the difference between ToUpper() and ToUpperInvariant()?
... What characters will you accept as a username? What if you have to put in Customer names into a Legacy ERP built on COBOL? Lots of cases where the culture is important. Not to mention, dates and numbers. 4.54 is written 4,54 in some languages. Pretending those other languages don't exist won't get ...
Internal typedefs in C++ - good style or bad style?
...he side of the user. As a user of allocator_traits attempting to create a custom allocator, I don't have to bother with the fifteen members of the traits class... all I have to do is say typedef Blah value_type; and provide the appropriate member functions, and the default allocator_traits will fig...