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What is an index in SQL?
...SQL servers as well):
http://dev.mysql.com/doc/refman/5.0/en/mysql-indexes.html
An index can be used to efficiently find all rows matching some column in your query and then walk through only that subset of the table to find exact matches. If you don't have indexes on any column in the WHERE clause...
How can I put a database under git (version control)?
...ersion control sw. free version of Datical. http://www.liquibase.org/index.html
Datical - commercial version of Liquibase - https://www.datical.com/
Flyway by BoxFuse - commercial sw. https://flywaydb.org/
Another open source project https://gitlab.com/depesz/Versioning
Author provides a guide here:...
How do I select the “last child” with a specific class name in CSS? [duplicate]
... This doesn't select the last div with class 'list' using the html in the question
– Agu Dondo
Jul 24 '15 at 16:13
16
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What are the differences between ArrayList and Vector?
...is doubling with needed docs.oracle.com/javase/7/docs/api/java/util/Vector.html while of ArrayList "The details of the growth policy are not specified beyond the fact that adding an element has constant amortized time cost." docs.oracle.com/javase/7/docs/api/java/util/ArrayList.html
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Play an audio file using jQuery when a button is clicked
...ng to play an audio file when I click the button, but it's not working, my html code is:
6 Answers
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Faster s3 bucket duplication
.../backup-mybucket
http://docs.aws.amazon.com/cli/latest/reference/s3/sync.html
Supports concurrent transfers by default. See http://docs.aws.amazon.com/cli/latest/topic/s3-config.html#max-concurrent-requests
To quickly transfer a huge number of small files, run the script from an EC2 instance to ...
How to do Base64 encoding in node.js?
...lue = $(this).val(),
hash = Base64.encode(value);
$(".test").html(hash);
var decode = Base64.decode(hash);
$(".decode").html(decode);
});
var Base64={_keyStr:"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=",encode:function(e){var t="";var n,r,i,s,o,u,a;...
SVN+SSH, not having to do ssh-add every time? (Mac OS)
...aken from this site:
http://www-uxsup.csx.cam.ac.uk/~aia21/osx/leopard-ssh.html
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How can I reset or revert a file to a specific revision?
...pt is the command to parse command arguments. gnu.org/software/libc/manual/html_node/Getopt.html
– Devy
Jul 14 '15 at 18:11
2
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Where is PATH_MAX defined in Linux?
...why it simply isn't: insanecoding.blogspot.com/2007/11/pathmax-simply-isnt.html
– paulsm4
Feb 26 '12 at 0:13
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