大约有 38,000 项符合查询结果（耗时：0.0468秒） [XML]
How do I (or can I) SELECT DISTINCT on multiple columns?
...would qualify as "distinct" (though looking identical to the human eye):
(123, NULL)
(123, NULL)
Also passes in a unique index and almost anywhere else, since NULL values do not compare equal according to the SQL standard. See:
Create unique constraint with null columns
OTOH, GROUP BY, DISTIN...
Can regular expressions be used to match nested patterns? [duplicate]
...ursive "regular expressions". E.g. see the chapter "Recursive patterns" in php.net/manual/en/regexp.reference.php
– daremon
Sep 25 '08 at 15:26
2
...
End of support for python 2.7?
...exec): cvedetails.com/product/18230/Python-Python.html?vendor_id=10210 vs php with 408 (27% code exec): cvedetails.com/product/128/PHP-PHP.html?vendor_id=74 or Java with 438 (3% code exec): cvedetails.com/product/19117/Oracle-JRE.html?vendor_id=93 ... So by "its fair share" you must have meant a "...
Dealing with nginx 400 “The plain HTTP request was sent to HTTPS port” error
...he the solution which is answered by Igor here http://forum.nginx.org/read.php?2,1612,1627#msg-1627
Yes. Or you may combine SSL/non-SSL servers in one server:
server {
listen 80;
listen 443 default ssl;
# ssl on - remember to comment this out
}
...
Real escape string and PDO [duplicate]
...escape_string() with the PDO::quote() method.
Here is an excerpt from the PHP website:
<?php
$conn = new PDO('sqlite:/home/lynn/music.sql3');
/* Simple string */
$string = 'Nice';
print "Unquoted string: $string\n";
print "Quoted string: " . $conn->quote($string) . "\n";...
Bad value X-UA-Compatible for attribute http-equiv on element meta
...erver side browser detection and only send it to IE
To add the header in PHP we can just add this to our page:
if (isset($_SERVER['HTTP_USER_AGENT']) &&
(strpos($_SERVER['HTTP_USER_AGENT'], 'MSIE') !== false))
header('X-UA-Compatible: IE=edge,chrome=1');
Or you could add it...
How to get all columns' names for all the tables in MySQL?
...
<?php
$table = 'orders';
$query = "SHOW COLUMNS FROM $table";
if($output = mysql_query($query)):
$columns = array();
while($result = mysql_fetch_assoc($output)):
$...
Difference between Node object and Element object?
...
What about <span data-a="1" >123</span> ? this span is an element which has it's own node. but does the attribute also has it's own node ?
– Royi Namir
Mar 25 '14 at 9:44
...
Grep not as a regular expression
I need to search for a PHP variable $someVar . However, Grep thinks that I am trying to run a regex and is complaining:
6 ...
Possibility of duplicate Mongo ObjectId's being generated in two different collections?
...ing in Mongo itself, it is possible to have duplicate _id's generated with PHP in Mongo.
The use-case where this has happened with regularity for me is when I'm looping through a dataset and attempting to inject the data into a collection.
The array that holds the injection data must be explicitl...