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Insert into … values ( SELECT … FROM … )
... the SQL engine of the day ( MySQL , Oracle , SQL Server , Informix , and DB2 ).
26 Answers
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Shorthand way for assigning a single field in a record, while copying the rest of the fields?
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And lenses-like packages often define operators in addition to functions for getting and setting fields. For example, test $ c .~ "Goodbye" is how lens would do it iirc. I'm not saying this is intutitive, but once you know ...
HTML/Javascript change div content
...nt").innerText = "<b>bold text?</b>"; will behave differently, and sometimes quite usefully, to document.getElementById("content").innerHTML = "<b>bold text?</b>";
– Isaac
May 23 '13 at 9:51
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C#/Linq: Apply a mapping function to each element in an IEnumerable?
...Forest/Trees Visual Occlusion Problem", I guess :)
– Andreas Baus
Aug 25 '11 at 9:00
2
Be aware t...
How do you manually execute SQL commands in Ruby On Rails using NuoDB
I'm trying to manually execute SQL commands so I can access procedures in NuoDB.
4 Answers
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When to use a View instead of a Table?
...ose facts from a certain client.
Views for insertion/updates:
You can handle security issues with views by using such functionality as Oracle's "WITH CHECK OPTION" clause directly in the view
Drawbacks
You lose information about relations (primary keys, foreign keys)
It's not obvious whether...
Does the default constructor initialize built-in types?
...The behavior of () initializer is different in some respects between C++98 and C++03, but not in this case. For the above class C it will be the same: () initializer performs zero initialization of C::x.
Another example of initialization that is performed without involving constructor is, of course...
Cannot push to GitHub - keeps saying need merge
... the remote branch into your local branch (see differences with git diff), and want to do a force push, use the push command with -f
git push -f origin <branch>
where origin is the name of your remote repo.
Usually, the command refuses to update a remote ref that is not an ancestor of t...
Check if a given key already exists in a dictionary
...()
for i in range(100):
key = i % 10
d[key] = d.get(key, 0) + 1
and if you wanted to always ensure a default value for any key you can either use dict.setdefault() repeatedly or defaultdict from the collections module, like so:
from collections import defaultdict
d = defaultdict(int)
f...
Add a fragment to the URL without causing a redirect?
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No worries - and it makes you wonder why it always returns it.
– alex
Nov 26 '10 at 2:13
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