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Using psql how do I list extensions installed in a database?
...org/docs/current/static/app-psql.html
Doing it in plain SQL it would be a select on pg_extension:
SELECT *
FROM pg_extension
http://www.postgresql.org/docs/current/static/catalog-pg-extension.html
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Set cookie and get cookie with JavaScript [duplicate]
...= c_name) {
return unescape(y);
}
}
}
function cssSelected() {
var cssSelected = $('#myList')[0].value;
if (cssSelected !== "select") {
setCookie("selectedCSS", cssSelected, 3);
}
}
$(document).ready(function() {
$('#myList')[0].value = getCookie("se...
With Mercurial, how can I “compress” a series of changesets into one before pushing?
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If you are using TortoiseHg, use can just select two revisions (use CTRL to select non-subsequent ones), right click and select "Compress History".
After that you'll get a new change list in new head starting from the first change you selected before, it will contai...
Copy table without copying data
...
Try:
CREATE TABLE foo SELECT * FROM bar LIMIT 0
Or:
CREATE TABLE foo SELECT * FROM bar WHERE 1=0
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Favourite performance tuning tricks [closed]
...n-optimal query plan
Break up the Join
Can you break up the join?
Pre-select foreign keys into a temporary table
Do half the join and put results in a temporary table
Are you using the right kind of temporary table?
#temp tables may perform much better than @table variables with large volum...
How do I detect “shift+enter” and generate a new line in Textarea?
...tarea, in characters, from the start?
function getCaret(el) {
if (el.selectionStart) {
return el.selectionStart;
} else if (document.selection) {
el.focus();
var r = document.selection.createRange();
if (r == null) {
return 0;
}
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MyISAM versus InnoDB [closed]
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Frequent select queries Yes
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Frequent insert, update, delete Yes
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autolayout - make height of view relative to half superview height
...lso need to setup bottom, left, and right constraints, like normal)
. Then select the constraint and navigate to the Attribute inspector:
Then you can adjust the multiplier. If you want it 50% of the super view leave it at 1, since it is aligned per the super's center. This is also a great way to...
Is it possible to GROUP BY multiple columns using MySQL?
Is it possible to GROUP BY more than one column in a MySQL SELECT query? For example:
7 Answers
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Any good, visual HTML5 Editor or IDE? [closed]
...E Developers" Latest Stable Version Download Google Plugin for Eclipse.zip Select your download according to your Eclipse Version After Downloading (don't Unzip) Open Eclipse Help > Install New Software > Add > Archive > Select the Downloaded Plug-in.zip
in the field "Name" enter "Google...