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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...
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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 ...
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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); } } } }...
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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...
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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. share | improve this answer | f...
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The SMTP server requires a secure connection or the client was not authenticated. The server respons

... 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#

... 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 ...