大约有 7,000 项符合查询结果(耗时:0.0309秒) [XML]
How do I use regex in a SQLite query?
...A SQLite UDF in PHP/PDO for the REGEXP keyword that mimics the behavior in MySQL:
$pdo->sqliteCreateFunction('regexp',
function ($pattern, $data, $delimiter = '~', $modifiers = 'isuS')
{
if (isset($pattern, $data) === true)
{
return (preg_match(sprintf('%1$s%...
What datatype to use when storing latitude and longitude data in SQL databases? [duplicate]
...what suggested here using the following conversion algorithm:
as a stored mysql function:
CREATE DEFINER=`r`@`l` FUNCTION `PositionSmallToFloat`(s INT)
RETURNS decimal(10,7)
DETERMINISTIC
RETURN if( ((s > 0) && (s >> 31)) , (-(0x7FFFFFFF -
(s & 0x7FFFFFFF))) / 600000, s / 60...
Storing images in SQL Server?
...that indeed many see saving images to disk better for larger images, while mySQL allows for easier access, specially from languages like PHP.
I found a similar question
MySQL BLOB vs File for Storing Small PNG Images?
My final verdict was that for things such as a profile picture, just a small s...
Why would json_encode return an empty string
...is problem was setting charset=utf8 in my PDO connection.
$dbo = new PDO('mysql:host=localhost;dbname=yourdb;charset=utf8', $username, $password);
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PHP Composer update “cannot allocate memory” error (using Laravel 4)
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Late to the party, but I simply switched off Apache and MySQL. There is a reason I am using a 512MB RAM VPS, don't want to spend monies.
– Kumar
Mar 20 '17 at 14:13
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Tools for Generating Mock Data? [closed]
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If you are looking or willing to use something MySQL-specific, you could take a look at Super Smack. It is currently maintained by Tony Bourke.
Super Smack allows you to generate random data to insert into your database tables. It is customizable, allowing you to use...
Comparing date ranges
In MySQL, If I have a list of date ranges (range-start and range-end). e.g.
10 Answers
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PDO's query vs execute
... if you use a prepare on the : calories is that kind of the equivalent of mysql_real_escape_string() to stop injections or do you need more than just $sth->bindParam(':calories', $calories); to heighten security?
– Dan
Jan 5 '12 at 12:52
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Hibernate: “Field 'id' doesn't have a default value”
...ns but again got same error what mistake i do i don't know......I am using mysql data base.
– Krunal Patel
Feb 10 '15 at 8:46
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PreparedStatement IN clause alternatives?
...in select or DML, since it is Oracle, which offers lightyears of more than MySQL or similar simple database engines. PL/SQL allows you to hide the storage model from your application domain model in an effective way.
The trick here is:
we need a call which accepts the long string, and store somewh...
