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MySQL Cannot Add Foreign Key Constraint
...the parent column exactly. For example, since medicalhistory.MedicalHistoryID is an INT, Patient.MedicalHistory also needs to be an INT, not a SMALLINT.
Also, you should run the query set foreign_key_checks=0 before running the DDL so you can create the tables in an arbitrary order rather than need...
How to implement a ViewPager with different Fragments / Layouts
....
Also be aware that I am using the support-library's Fragment:
android.support.v4.app.Fragment
MainActivity.java (Initializes the Viewpager and has the adapter for it as an inner class). Again have a look at the imports. I am using the android.support.v4 package.
import android.os.Bundle;
...
Sort a list from another list IDs
I have a list with some identifiers like this:
4 Answers
4
...
Postgres NOT in array
...sing Postgres' native array type, and trying to find the records where the ID is not in the array recipient IDs.
7 Answers...
ORA-00979 not a group by expression
...
@AaronDigulla That's what MySQL does, and the world didn't end :p
– Chris Baker
Aug 27 '14 at 21:32
1
...
ImageView in circular through xml
...rent content with shape.
// res/drawable/circle.xml
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:innerRadius="0dp"
android:shape="ring"
android:thicknessRatio="1.9"
android:useLevel="false" >
<solid android:color="@android:color/transparent...
Socket.IO - how do I get a list of connected sockets/clients?
...ve: stackoverflow.com/questions/9352549/…
– Musa Haidari
Jun 7 '16 at 5:54
1
TypeError: fn.bind...
Get element inside element by class and ID - JavaScript
...ll, first you need to select the elements with a function like getElementById.
var targetDiv = document.getElementById("foo").getElementsByClassName("bar")[0];
getElementById only returns one node, but getElementsByClassName returns a node list. Since there is only one element with that class na...
How do I align views at the bottom of the screen?
...on that will be aligned to the end and the bottom of the screen.
<android.support.constraint.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_h...
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 ...