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How to get the insert ID in JDBC?
...d key, then you can use Statement#getGeneratedKeys() for this. You need to call it on the same Statement as the one being used for the INSERT. You first need to create the statement using Statement.RETURN_GENERATED_KEYS to notify the JDBC driver to return the keys.
Here's a basic example:
public ...
Cannot truncate table because it is being referenced by a FOREIGN KEY constraint?
...orrect; you cannot truncate a table which has an FK constraint on it.
Typically my process for this is:
Drop the constraints
Trunc the table
Recreate the constraints.
(All in a transaction, of course.)
Of course, this only applies if the child has already been truncated. Otherwise I go a diffe...
What does the function then() mean in JavaScript?
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The traditional way to deal with asynchronous calls in JavaScript has been with callbacks.
Say we had to make three calls to the server, one after the other, to set up our
application. With callbacks, the code might look something like the following (assuming
a xhrGET fu...
How can I get the corresponding table header (th) from a table cell (td)?
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$(function($) {
"use strict";
// Only part of the demo, the thFromTd call does the work
$(document).on('mouseover mouseout', 'td', function(event) {
var td = $(event.target).closest('td'),
th = thFromTd(td);
th.parent().find('.highlight').removeClass('highlight');
if (eve...
Drawable image on a canvas
...tDrawable(id) is being deprecated, you should either use the ContextCompat call above, or the getDrawable(id, theme) call. developer.android.com/reference/android/content/res/…
– wblaschko
Dec 2 '16 at 21:37
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How to provide animation when calling another activity in Android?
...o Activities A and B. I want to have the shrink Animation when
Activity A calls B and maximize animation when Activity B calls A. I don't need the animation xml files for this.
...
Password hint font in Android
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Reminder: Call setTypeface() AFTER you change the InputType by code. setTransformationMethod not needed if InputType include xx_VARIATION_PASSWORD;
– Loda
Jun 25 '13 at 10:51
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What is the difference between a Docker image and a container?
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An instance of an image is called a container. You have an image, which is a set of layers as you describe. If you start this image, you have a running container of this image. You can have many running containers of the same image.
You can see all yo...
onActivityResult is not being called in Fragment
The activity hosting this fragment has its onActivityResult called when the camera activity returns.
39 Answers
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How to delete or add column in SQLITE?
... in cases where there are external tables referring to this table one must call PRAGMA foreign_keys=OFF. In this case, after doing this sequence one must call PRAGMA foreign_keys=ON in order to re-enable foreign keys.
– PazO
Apr 11 '18 at 9:12
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