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Is it a good idea to index datetime field in mysql?
...s between conditions: http://dev.mysql.com/doc/refman/5.0/en/mysql-indexes.html
This makes your datetime column an excellent candidate for an index if you are going to be using it in conditions frequently in queries. If your only condition is BETWEEN NOW() AND DATE_ADD(NOW(), INTERVAL 30 DAY) and ...
What is the most efficient way to store tags in a database?
...nt post by Josh Berkus:
http://www.databasesoup.com/2015/01/tag-all-things.html
There are more various options compared thoroughly for performance and the one suggested above is the best overall.
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NOW() function in PHP
... See here: https://dev.mysql.com/doc/refman/8.0/en/date-and-time-functions.html#function_now.
An interesting fact is that it's possible to get the datetime format by running this query: SHOW VARIABLES LIKE 'd%e_format', the result could be something like this:
Variable_name Value
date_f...
How can I check if a key is pressed during the click event with jQuery?
...d down'). Here's a nice article about key events in JS unixpapa.com/js/key.html
– F Lekschas
Nov 2 '15 at 23:39
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What is the exact meaning of IFS=$'\n'?
...http://www.linuxtopia.org/online_books/bash_guide_for_beginners/sect_03_03.html:
Words in the form "$'STRING'" are
treated in a special way. The word
expands to a string, with
backslash-escaped characters replaced
as specified by the ANSI-C standard.
Backslash escape sequences can be
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How to convert a ruby hash object to JSON?
... # => "1". Docs here: ruby-doc.org/stdlib-2.6.3/libdoc/json/rdoc/JSON.html
– bkunzi01
Jul 13 at 20:22
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Android: Create spinner programmatically from array
...roid documentation: developer.android.com/guide/topics/ui/controls/spinner.html
– WOUNDEDStevenJones
Oct 4 '12 at 21:00
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Should try…catch go inside or outside a loop?
...re's a reference: http://www.javaworld.com/javaworld/jw-01-1997/jw-01-hood.html
The table is described about half-way down.
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When does Java's Thread.sleep throw InterruptedException?
...er here:
http://www.ibm.com/developerworks/java/library/j-jtp05236/index.html?ca=drs-
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Why does Google prepend while(1); to their JSON responses?
...to make it difficult for a third-party to insert the JSON response into an HTML document with the <script> tag. Remember that the <script> tag is exempt from the Same Origin Policy.
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