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How do I update if exists, insert if not (AKA “upsert” or “merge”) in MySQL?
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Yeah, I believe SQL Server's equivalent is called MERGE. In general, the concept is often referred to as "UPSERT".
– chaos
Aug 2 '09 at 13:40
3
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How do I increase modal width in Angular UI Bootstrap?
...pp-modal-window .modal-dialog {
width: 500px;
}
Then in the controller calling the modal window, set the windowClass:
$scope.modalButtonClick = function () {
var modalInstance = $modal.open({
templateUrl: 'App/Views/modalView.html',
controller: 'modalControll...
SQL select only rows with max value on a column [duplicate]
...ngle tag just to deal with questions like that: greatest-n-per-group.
Basically, you have two approaches to solve that problem:
Joining with simple group-identifier, max-value-in-group Sub-query
In this approach, you first find the group-identifier, max-value-in-group (already solved above) in a ...
Multiple columns index when using the declarative ORM extension of sqlalchemy
...ndex', mytable.c.somecol.desc())
We can just use the model property and call .desc() on it:
from flask_sqlalchemy import SQLAlchemy
db = SQLAlchemy()
class GpsReport(db.Model):
__tablename__ = 'gps_report'
id = db.Column(db.Integer, db.Sequence('gps_report_id_seq'), nullable=False, au...
How to generate a git patch for a specific commit?
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Also do not forget to call git apply --check patch-file-name before applying a patch. This will help to avoid problems.
– iamantony
Sep 13 '17 at 10:04
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Template default arguments
...ke a function foo with a single default argument. The expression foo won't call it, but foo() will. The argument syntax must still be there. This is consistent with that.
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Why is it necessary to set the prototype constructor?
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};
// define the Student class
function Student(name) {
Person.call(this, name);
}
// inherit Person
Student.prototype = Object.create(Person.prototype);
Now what happens when we create a new Student and copy it?
var student1 = new Student("trinth");
console.log(student1...
What is the closest thing Windows has to fork()?
...quite old Cygwin's architecture doc:
5.6. Process Creation
The fork call in Cygwin is particularly interesting
because it does not map well on top of
the Win32 API. This makes it very
difficult to implement correctly.
Currently, the Cygwin fork is a
non-copy-on-write implementation
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Jelly Bean DatePickerDialog — is there a way to cancel?
...int in client code, it addresses the fundamental issue (the listener being called in the framework class), works fine across config changes and it routes the code logic to the default implementation in previous Android versions not plagued by this bug (see class source).
Original answer (kept for h...
How to create a JavaScript callback for knowing when an image is loaded?
...to know when an image has finished loading. Is there a way to do it with a callback?
10 Answers
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