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Drop a temporary table if it exists
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@TobySpeight - the question is about temporary tables. Most of these points are of limited relevance to that.
– Martin Smith
May 17 '17 at 15:49
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How to implement Android Pull-to-Refresh
...savedInstanceState) {
final SwipeRefreshLayout pullToRefresh = findViewById(R.id.pullToRefresh);
pullToRefresh.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
@Override
public void onRefresh() {
refreshData(); // your code
pullToRefre...
How do I update the notification text for a foreground service in Android?
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to clarify further: you can't cancel() a Notification set by startForeground(). You have to remove the foreground status of the service itself (using stopForeground() if you want to make ticker text appear again. I lost hours because these answers led me to believe it was in fact po...
TypeScript sorting an array
...ould like to add that if you have an array of objects and you wish to sort by key then its almost the same, this is an example of one that can sort by both date(number) or title(string):
if (sortBy === 'date') {
return n1.date - n2.date
} else {
if (n1.title > n2.title) {...
Why does jQuery or a DOM method such as getElementById not find the element?
What are the possible reasons for document.getElementById , $("#id") or any other DOM method / jQuery selector not finding the elements?
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Validate uniqueness of multiple columns
... the following example:
database table records are supposed to be unique by n fields;
multiple (two or more) concurrent requests, handled by separate processes each (application servers, background worker servers or whatever you are using), access database to insert the same record in table;
each ...
SQL order string as number
...olumn value to an integer explicitly with
select col from yourtable
order by cast(col as unsigned)
or implicitly for instance with a mathematical operation which forces a conversion to number
select col from yourtable
order by col + 0
BTW MySQL converts strings from left to right. Examples:
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Android Text over image
...guide has a great example of this here: Android Layout Tricks #3: Optimize by merging.
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Select statement to find duplicates on certain fields
... can use..
select field1,field2,field3, count(*)
from table_name
group by field1,field2,field3
having count(*) > 1
Check this link for more information on how to delete the rows.
http://support.microsoft.com/kb/139444
There should be a criterion for deciding how you define "first rows" bef...
python pandas dataframe to dictionary
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If you want a simple way to preserve duplicates, you could use groupby:
>>> ptest = pd.DataFrame([['a',1],['a',2],['b',3]], columns=['id', 'value'])
>>> ptest
id value
0 a 1
1 a 2
2 b 3
>>> {k: g["value"].tolist() for k,g in ptest.groupby("id"...