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Convert SQLITE SQL dump file to POSTGRESQL
...mp to PostgreSQL. Even though this post has an accepted answer (and a good one at that +1), I think adding this is important.
I started looking into the solutions here and realized that I was looking for a more automated method. I looked up the wiki docs:
https://wiki.postgresql.org/wiki/Converting_...
How many characters can UTF-8 encode?
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UTF-8 does not use one byte all the time, it's 1 to 4 bytes.
The first 128 characters (US-ASCII) need one byte.
The next 1,920 characters need two bytes to encode. This covers the remainder of almost all Latin alphabets, and also Greek...
must appear in the GROUP BY clause or be used in an aggregate function
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@Sebas It can be done without joining on MAX (see answer by @ypercube, there is also another solution in my answer) but not the way you do it. Check expected output.
– zero323
Nov 1 '13 at 9:08
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virtualenvwrapper and Python 3
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You can make virtualenvwrapper use a custom Python binary instead of the one virtualenvwrapper is run with. To do that you need to use VIRTUALENV_PYTHON variable which is utilized by virtualenv:
$ export VIRTUALENV_PYTHON=/usr/bin/python3
$ mkvirtualenv -a myproject myenv
Running virtualenv with ...
How to define an enumerated type (enum) in C?
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Declaring an enum variable is done like this:
enum strategy {RANDOM, IMMEDIATE, SEARCH};
enum strategy my_strategy = IMMEDIATE;
However, you can use a typedef to shorten the variable declarations, like so:
typedef enum {RANDOM, IMMEDIATE, SEARCH} strat...
What REALLY happens when you don't free after malloc?
...lushed, or if they're a temp file, they might not get deleted when you're done. Also, database handles should have their transactions committed and then closed when you're done with them. Similarly, if you're using an object oriented language like C++ or Objective C, not freeing an object when you...
How to mock an import
... so that the B import is an ImportError again? I tried sys.modules['B'] = None but it doesn't seem to work.
– audiodude
Aug 20 '19 at 17:50
4
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Any reason why scala does not explicitly support dependent types?
... Miles, thanks for this very detailed answer. I'm a bit curious about one thing, though. None of your examples seem at first glance particularly impossible to express in Haskell; are you then claiming that Haskell is also a dependently-typed language?
– Jonathan Sterling
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Are inline virtual functions really a non-sense?
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There is one category of virtual functions where it still makes sense to have them inline. Consider the following case:
class Base {
public:
inline virtual ~Base () { }
};
class Derived1 : public Base {
inline virtual ~Derived1...
C: differences between char pointer and array [duplicate]
...current scope's stack space, but that references memory elsewhere (in this one, "now is the time" is stored elsewhere in memory, commonly a string table).
Also, note that because the data belonging to the second definition (the explicit pointer) is not stored in the current scope's stack space, it ...