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How to set variables in HIVE scripts
...em variables as well, so you can reference ${env:USER} for example.
To see all the available variables, from the command line, run
% hive -e 'set;'
or from the hive prompt, run
hive> set;
Update:
I've started to use hivevar variables as well, putting them into hql snippets I can include from hi...
How to set current working directory to the directory of the script in bash?
...
If you called the script as ./script, . is the correct directory, and changing to . it will also end up in the very directory where script is located, i.e. in the current working directory.
– ndim
...
With MySQL, how can I generate a column containing the record index in a table?
...l l
JOIN (SELECT @curRow := 0) r;
The JOIN (SELECT @curRow := 0) part allows the variable initialization without requiring a separate SET command.
Test case:
CREATE TABLE league_girl (position int, username varchar(10), score int);
INSERT INTO league_girl VALUES (1, 'a', 10);
INSERT INTO leag...
Is there a way to make git pull automatically update submodules?
Is there a way to automatically have git submodule update (or preferably git submodule update --init called whenever git pull is done?
...
What does upstream mean in nginx?
... location / {
proxy_pass http://myproject;
}
}
}
This means all requests for / go to the any of the servers listed under upstream XXX, with a preference for port 8000.
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How to check if a string is a valid hex color representation?
...xactly 6 characters, it will match exactly 3 characters, but 1 or 2 times. Allowing ABC and AABBCC, but not ABCD
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string.Format() giving “Input string is not in correct format”
... message "Input string was not in correct format" was not helpful to me at all. I thought one of my parameters was null or something.
– styfle
Aug 10 '12 at 16:59
add a commen...
CSS way to horizontally align table
...o;
}
But the article mentioned in the beginning of this answer gives you all the other way to center a table.
An elegant css cross-browser solution:
This works in both MSIE 6 (Quirks and Standards), Mozilla, Opera and even Netscape 4.x without setting any explicit widths:
div.centered
{
...
jQuery pitfalls to avoid [closed]
...ed");
});
I found this the enlightening moment when I realized how the call stacks work.
Edit: incorporated suggestions in comments.
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What are the differences between “generic” types in C++ and Java?
...+" operator available.
In Java you have to specify a type if you want to call methods on the objects passed, something like:
<T extends Something> T sum(T a, T b) { return a.add ( b ); }
In C++ generic functions/classes can only be defined in headers, since the compiler generates different...