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Do I need to create indexes on foreign keys on Oracle?
...ance of an index may be unacceptable.
Most salient here would seem to be selectivity: if the values in the index would be highly duplicated then it may give better performance to drop the index (if possible) and allow a table scan.
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Get column index from column name in python pandas
...pecified label or are duplicates, the index with the larger index value is selected:
df = pd.DataFrame(
{"pear": [1, 2, 3], "apple": [2, 3, 4], "orange": [3, 4, 5]},
index=[0, .9, 1.1])
df.index.get_indexer([0, 1])
# array([ 0, -1], dtype=int64)
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How to theme the ENTIRE Xcode IDE to light-on-dark?
...ground by going into preferences ⌘., then go to Fonts & Colors, then select the Console. Now you can edit its background:
Just be sure to edit the font colors of the various input and outputs texts if you choose black. By default all of the input/output fonts are black, only the console pro...
How to use/install gcc on Mac OS X 10.8 / Xcode 4.4
...te:
You can now just run the following command from your terminal:
xcode-select --install
Starting with Xcode 4.3 - you must now manually install command line tools from Xcode menu > Preferences > Downloads.
Alternatively, there are stand-alone installation packages both for Mountain ...
pass post data with window.location.href
... ||input.nodeName=="BUTTON"
||input.nodeName=="SELECT")
){
var output = input.cloneNode(true);
output.name = form.name + nameJoiner + input.name;
this.appendChild(output);
}
}
}
}...
How do I dump an object's fields to the console?
...", "reverse", "reverse!", "rindex", "rjust", "rstrip", "rstrip!", "scan", "select", "send", "singleton_methods", "size", "slice", "slice!", "sort", "sort_by", "split", "squeeze", "squeeze!", "strip", "strip!", "sub", "sub!", "succ", "succ!", "sum", "swapcase", "swapcase!", "taguri", "taguri=", "tain...
How to terminate script execution when debugging in Google Chrome?
...ia Shift+ESC or through
Menu → More Tools → Task Manager
You can select your page task and end it by pressing "End Process" button.
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The SMTP server requires a secure connection or the client was not authenticated. The server respons
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this should be the selected answer
– thatOneGuy
Aug 13 '15 at 14:44
2
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INSTALL_FAILED_NO_MATCHING_ABIS when install apk
...m/reviews/lg-g4,4353-2.html ]. I fixed the error entering the AVD manager, selecting the simulated device that was giving me the error and clicking on Edit button where I set up an ARM (armeabi-v7a) architecture. After this change plus emulator reboot the installation went through with no issues
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Convert a string to an enum in C#
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Come on, how many of you implemented that selected answer from 2008 to only scroll down and find this is the better (modern) answer.
– TEK
Mar 18 '16 at 14:47
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