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SQL Server SELECT LAST N Rows
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You can do it by using the ROW NUMBER BY PARTITION Feature also. A great example can be found here:
I am using the Orders table of the Northwind database... Now let us retrieve the Last 5 orders placed by Employee 5:
SELECT ORDERID, C...
How can I insert values into a table, using a subquery with more than one result?
... imageUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454...
Android: android.content.res.Resources$NotFoundException: String resource ID #0x5
... @bheatcoker - because setText(int) also used to get string resource by id. And In Android all resource id has int value.
– user370305
Apr 26 '16 at 18:51
1
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Show/hide 'div' using JavaScript
...arget'));
hide(document.querySelector('.target'));
hide(document.getElementById('target'));
hide(document.querySelectorAll('.target'));
function hide (elements) {
elements = elements.length ? elements : [elements];
for (var index = 0; index < elements.length; index++) {
elemen...
How can I select rows with most recent timestamp for each key value?
... MAX(timestamp) FROM sensorTable s2 WHERE s1.sensorID = s2.sensorID)
ORDER BY sensorID, timestamp;
Pretty self-explaining I think, but here's more info if you wish, as well as other examples. It's from the MySQL manual, but above query works with every RDBMS (implementing the sql'92 standard).
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Blank HTML SELECT without blank item in dropdown list
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You can by setting selectedIndex to -1 using .prop: http://jsfiddle.net/R9auG/.
For older jQuery versions use .attr instead of .prop: http://jsfiddle.net/R9auG/71/.
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Ways to implement data versioning in MongoDB
...mory space. You generally don't want a full history for a simple query. So by keeping the history out of the object you can also keep it out of the commonly accessed memory when that data is queried.
To make my life easy, I would make a history document contain a dictionary of time-stamped diffs. S...
Select datatype of the field in postgres
...bigint
ip_addr | inet
You might be able to get all that information by joining other information_schema views, or by querying the system tables directly. psql -E might help with that.
The function pg_typeof() correctly shows the use of test_domain, but doesn't report the details of varchar(n...
How exactly does the android:onClick XML attribute differ from setOnClickListener?
...in two different ways.
Code Implementation
Button btn = (Button) findViewById(R.id.mybutton);
btn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
myFancyMethod(v);
}
});
// some more code
public void myFancyMethod(View v) {
// does...
Error Code: 1005. Can't create table '…' (errno: 150)
...SET NULL, but the relevant key field is set to NOT NULL. You can fix this by either changing your cascade or setting the field to allow NULL values.
Make sure that the Charset and Collate options are the same both at the table level as well as individual field level for the key columns.
You have a ...