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Reorder / reset auto increment primary key
... Is this a very expensive statement? How would it perform in a multi gigabyte table? I'm afraid of blowing up my ibdata1 (long transaction) and blocking the table for too long.
– Stefan
Jan 21 '17 at 18:05
...
How to list all users in a Linux group?
... just the group
# specified on the command line
#
# Copyright © 2010-2013 by Zed Pobre (zed@debian.org or zed@resonant.org)
#
# Permission to use, copy, modify, and/or distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and th...
Best way to do multi-row insert in Oracle?
...
load data
infile 'ldr_test.csv'
into table ldr_test
fields terminated by "," optionally enclosed by '"'
( id, description )
oracle-2%
Run SQL*Loader command
oracle-2% sqlldr <username> control=ldr_test.ctl
Password:
SQL*Loader: Release 9.2.0.5.0 - Production on Wed Se...
Which method performs better: .Any() vs .Count() > 0?
...d to go through the GetEnumerator()/MoveNext()/Dispose() sequence required by Any() to check for a non-empty IEnumerable<T> sequence.
For just IEnumerable<T>, then Any() will generally be quicker, as it only has to look at one iteration. However, note that the LINQ-to-Objects implementa...
Set the selected index of a Dropdown using jQuery
... also be a useful fix/workaround for people who are changing the selection by calling prop('selectedIndex', ...), rather than val(...). Perhaps the problem was that you're listening for a change event, and THAT's what wasn't working for you? It's true that simply changing the property is not going t...
How to style input and submit button with CSS?
...yles the submit button */
}
For more up-to-date browsers, you can select by attributes (using the same HTML):
.input {
/* styles all input elements */
}
.input[type="text"] {
/* styles all inputs with type 'text' */
}
.input[type="submit"] {
/* styles all inputs with type 'submit'...
How to permanently remove few commits from remote branch
...d git switch.
That is: git switch -C mybranch origin/mybranch~n
(replace n by the number of commits to remove)
That will restore the index and working tree, like a git reset --hard would.
The documentation adds:
-C <new-branch>
--force-create <new-branch>
Similar to --create exc...
Controlling fps with requestAnimationFrame?
...ottling at 5 FPS: http://jsfiddle.net/m1erickson/CtsY3/
This method works by testing the elapsed time since executing the last frame loop.
Your drawing code executes only when your specified FPS interval has elapsed.
The first part of the code sets some variables used to calculate elapsed time.
...
What is a good pattern for using a Global Mutex in C#?
...turn value in Mutex() constructor call
bool createdNew;
// edited by Jeremy Wiebe to add example of setting up security for multi-user usage
// edited by 'Marc' to work also on localized systems (don't use just "Everyone")
var allowEveryoneRule =
new MutexAccessRule( new Se...
MySQL Query GROUP BY day / month / year
...
GROUP BY YEAR(record_date), MONTH(record_date)
Check out the date and time functions in MySQL.
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