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How do I rename a column in a database table using SQL?
...statement:
=> SELECT * FROM Test1;
id | foo | bar
----+-----+-----
2 | 1 | 2
=> ALTER TABLE Test1 RENAME COLUMN foo TO baz;
ALTER TABLE
=> SELECT * FROM Test1;
id | baz | bar
----+-----+-----
2 | 1 | 2
...
How can I use “sizeof” in a preprocessor macro?
...zeof(someThing) == PAGE_SIZE, "Data structure doesn't match page size");
2. Custom macro
If you just want to get a compile-time error when sizeof(something) is not what you expect, you can use following macro:
#define BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2*!!(condition)]))
Usage:
BU...
Python hashable dicts
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answered Jul 20 '09 at 4:30
UnknownUnknown
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What is the difference between procedural programming and functional programming? [closed]
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answered Aug 22 '08 at 19:37
Konrad RudolphKonrad Rudolph
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google oauth2 redirect_uri with several parameters
How to add a parameters to the google oauth2 redirect_uri?
4 Answers
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How do I do an OR filter in a Django query?
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edited Mar 2 at 17:15
phoenix
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answ...
Array Size (Length) in C#
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152
If it's a one-dimensional array a,
a.Length
will give the number of elements of a.
If b is a...
In Gradle, how do I declare common dependencies in a single place?
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mkobit
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answered Mar 3 '12 at 16:15
Peter NiederwieserPeter Niederwie...
Google OAuth 2 authorization - Error: redirect_uri_mismatch
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Why is there no tuple comprehension in Python?
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You can use a generator expression:
tuple(i for i in (1, 2, 3))
but parentheses were already taken for … generator expressions.
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