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Postgresql GROUP_CONCAT equivalent?
I have a table and I'd like to pull one row per id with field values concatenated.
7 Answers
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Is it possible to GROUP BY multiple columns using MySQL?
...would change the ascending order of col2 returning. 1,1|2,2|1,3 Demo: sqlfiddle.com/#!9/d5f69/1 Note that row id: 2 is returned in both cases for 2,2 despite inverting the columns.
– Will B.
May 24 '16 at 17:35
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How can I read SMS messages from the device programmatically in Android?
...t to prevent exception
do {
String msgData = "";
for(int idx=0;idx<cursor.getColumnCount();idx++)
{
msgData += " " + cursor.getColumnName(idx) + ":" + cursor.getString(idx);
}
// use msgData
} while (cursor.moveToNext());
} else {
// empty ...
How to read XML using XPath in Java
...xml version="1.0" encoding="UTF-8"?>
<Employees>
<Employee id="1">
<age>29</age>
<name>Pankaj</name>
<gender>Male</gender>
<role>Java Developer</role>
</Employee>
<Employee id="2">
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Populating a ListView using an ArrayList?
My Android app needs to populate the ListView using the data from an ArrayList .
5 Answers
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sql primary key and index
Say I have an ID row (int) in a database set as the primary key. If I query off the ID often do I also need to index it? Or does it being a primary key mean it's already indexed?
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How to create EditText with cross(x) button at end of it?
Is there any widget like EditText which contains a cross button, or is there any property for EditText by which it is created automatically? I want the cross button to delete whatever text written in EditText .
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Allow multi-line in EditText view in Android?
How to allow multi-line in Android's EditText view?
15 Answers
15
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Can I have an onclick effect in CSS?
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The closest you'll get is :active:
#btnLeft:active {
width: 70px;
height: 74px;
}
However this will only apply the style when the mouse button is held down. The only way to apply a style and keep it applied onclick is to use a bit of JavaScript.
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How to draw circle in html page?
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You can't draw a circle per se. But you can make something identical to a circle.
You'd have to create a rectangle with rounded corners (via border-radius) that are one-half the width/height of the circle you want to make.
#circle {
width: 50px;
height: 50px;
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