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What's the difference between RANK() and DENSE_RANK() functions in oracle?
... items.
As for nulls, it depends on the ORDER BY clause. Here is a simple test script you can play with to see what happens:
with q as (
select 10 deptno, 'rrr' empname, 10000.00 sal from dual union all
select 11, 'nnn', 20000.00 from dual union all
select 11, 'mmm', 5000.00 from dual union all
se...
Find CRLF in Notepad++
...le formats.
The '.' dot metacharacter does not match line endings.
[Tested in Notepad++ 5.8.5]: a regular expression search with an explicit \r or \n does not work (contrary to the Scintilla documentation).
Neither does a search on an explicit (pasted) LF, or on the (invisible) EOL characte...
Generate a random date between two other dates
...ate profile but didn't used date utility faker is a very good module while testing.
– Gahan
Apr 5 '18 at 6:45
I am get...
How can I echo HTML in PHP?
...es mean that you can do all kinds of formatting stuff (heredoc, etc.), and test it outputs correctly without the hassle of the page template getting in the way. (The Joomla CMS does it this way, BTW.)
I.e.:
<?php
ob_start();
echo('Hello, World!');
$php_output = ob_get_contents();
...
Random record in ActiveRecord
...
This is fastest solution
– Sergio Belevskij
Jan 12 '17 at 14:25
1
...
How can I override Bootstrap CSS styles?
...oosts the prio big time, we don't have to worry about calculating prio and testing as hard whether we have it always right. easier with an id if you want to definitively overwrite the default.
– hogan
Sep 11 '15 at 6:15
...
Determine the number of lines within a text file
...
I've tested both approaches, "File.ReadLines.Count()" v/s "reader.ReadLine()" and "reader.ReadLine()" is slightly faster but it's faster by very little margin. "ReadAllLines" is looser which takes double the time and eats lot of m...
Can I stop 100% Width Text Boxes from extending beyond their containers?
...s problem myself, and the only solution I could find that worked in all my test browsers (IE6, IE7, Firefox) was the following:
Wrap the input field in two separate DIVs
Set the outer DIV to width 100%, this prevents our container from overflowing the document
Put padding in the inner DIV of the e...
How can I force division to be floating point? Division keeps rounding down to 0?
... modules may expect classic division, so I don't recommend this except for testing. But to demonstrate:
$ python -Qnew -c 'print 1/2'
0.5
$ python -Qnew -c 'print 1/2j'
-0.5j
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How to get distinct values for non-key column fields in Laravel?
... I have a table "messages" (used for a chat), and I want to get the latest message that the authenticated user has received from each conversation. Using groupBy I can get just one message, but I get the first, and I need the last message. Seems that orderBy doesn't work.
–...