大约有 30,000 项符合查询结果（耗时：0.0411秒） [XML]
Ordering by the order of values in a SQL IN() clause
...se MySQL's FIELD() function:
SELECT name, description, ...
FROM ...
WHERE id IN([ids, any order])
ORDER BY FIELD(id, [ids in order])
FIELD() will return the index of the first parameter that is equal to the first parameter (other than the first parameter itself).
FIELD('a', 'a', 'b', 'c')
will ...
Regular expression for matching latitude/longitude coordinates?
...;
@Slf4j
public class LatLongValidationTest {
protected static final String LATITUDE_PATTERN="^(\\+|-)?(?:90(?:(?:\\.0{1,6})?)|(?:[0-9]|[1-8][0-9])(?:(?:\\.[0-9]{1,6})?))$";
protected static final String LONGITUDE_PATTERN="^(\\+|-)?(?:180(?:(?:\\.0{1,6})?)|(?:[0-9]|[1-9][0-9]|1[0-7][0-9])(...
update columns values with column of another table based on condition [duplicate]
... table1.Price = table2.price
FROM table1 INNER JOIN table2 ON table1.id = table2.id
You can also try this:
UPDATE table1
SET price=(SELECT price FROM table2 WHERE table1.id=table2.id);
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在MongoDB中模拟Auto Increment - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...代码大致如下所示：
<?php
function generate_auto_increment_id($namespace, array $option = array())
{
$option += array(
'init' => 1,
'step' => 1,
);
$instance = new Mongo();
$instance = $instance->selectCollection('_seq', 'seq');
$seq = ...
How to remove a single, specific object from a ConcurrentBag?
...currentBag the following, not efficient mind you, will get you there.
var stringToMatch = "test";
var temp = new List<string>();
var x = new ConcurrentBag<string>();
for (int i = 0; i < 10; i++)
{
x.Add(string.Format("adding{0}", i));
}
string y;
while (!x.IsEmpty)
{
x.TryTak...
How do I get the AM/PM value from a DateTime?
...
How about:
dateTime.ToString("tt", CultureInfo.InvariantCulture);
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How to loop over files in directory and change path and add suffix to filename
...ch (which makes the loop variable expand to the (un-matching) glob pattern string itself).
For example:
for filename in Data/*.txt; do
[ -e "$filename" ] || continue
# ... rest of the loop body
done
Reference: Bash Pitfalls
...
Attach IntelliJ IDEA debugger to a running Java process
...onfused me that you edit the inputs below and these then update the option strings above (in 13.1 CE, at least.)
– Carl G
May 28 '14 at 17:08
7
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How to set environment variables in Python?
...
Environment variables must be strings, so use
os.environ["DEBUSSY"] = "1"
to set the variable DEBUSSY to the string 1.
To access this variable later, simply use:
print(os.environ["DEBUSSY"])
Child processes automatically inherit the environment var...
Embed git commit hash in a .Net dll
... version.txt to your .gitignore file
Read the embedded text file version string
Here's some sample code to read the embedded text file version string:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using System.Reflection;
namespace TryGit...