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Can you create nested WITH clauses for Common Table Expressions?
...e of his query.
WITH paths AS (
SELECT
EmployeeID,
CONVERT(VARCHAR(900), CONCAT('.', EmployeeID, '.')) AS FullPath
FROM EmployeeHierarchyWide
WHERE ManagerID IS NULL
UNION ALL
SELECT
ehw.EmployeeID,
CONVERT(VARCHAR(900), CONCAT(p.FullPath...
Easy way to convert Iterable to Collection
In my application I use 3rd party library (Spring Data for MongoDB to be exact).
19 Answers
...
Why doesn't django's model.save() call full_clean()?
... As of Django 2.2.3, this causes an issue with the basic authentication system. You will get a ValidationError: Session with this Session key already exists. To avoid this, you need to add an if-statement for sender in list_of_model_classes to prevent the signal from overriding Django's default a...
How to convert `git:` urls to `http:` urls
... 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix...
Subtract one day from datetime
...
This should work.
select DATEADD(day, -1, convert(date, GETDATE()))
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ngModel Formatters and Parsers
...t.pickadate({ format: 'dd/mm/yyyy', editable: true });
// convert utc date to local for display
ngModel.$formatters.push(function (utcDate) {
if (!utcDate)
return;
return $filter('utcToLocal')(utcDate, ...
PHP完美实现GIF动画缩略图 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...mage('old_' . $i++ . '.gif');
}
?>
选择二：用ImageMagick提供的convert命令：
shell> convert old.gif old_%d.gif
结果得到GIF动画各帧示意图如下所示：
GIF动画各帧示意图
可以明显的看到，GIF动画为了压缩，会以第一帧为模板，其余各帧...
Convert a char to upper case using regular expressions (EditPad Pro)
...function or lambda as the replace argument.
I use the function below to convert css names with - to the javascript equivalent, for example, "border-top" will be transformed into "borderTop":
s = s.replace(/\-[a-z]/g, x => x[1].toUpperCase());
...
Ruby - elegantly convert variable to an array if not an array already
Given an array, a single element, or nil, obtain an array - the latter two being a single element array and an empty array respectively.
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Python timedelta in years
...rently I've got timedelta from datetime module and I don't know how to convert it to years.
16 Answers
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