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PostgreSQL delete with inner join
... The best answer, especially the first one, as it allows you to match by multiple fields.
– Kostanos
Nov 14 '17 at 14:58
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How do I find duplicates across multiple columns?
...s
join (
select name, city, count(*) as qty
from [stuff]
group by name, city
having count(*) > 1
) t on s.name = t.name and s.city = t.city
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How to annotate MYSQL autoincrement field with JPA annotations
...=GenerationType.IDENTITY)
private Long id;
The other 2 approaches stated by Pascal in his answer were not working for me.
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MySQL Insert into multiple tables? (Database normalization?)
...in the same query, but found out it's impossible?
So I want to insert it by simply using multiple queries i.e;
8 Answers
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How to implement a many-to-many relationship in PostgreSQL?
...;
I made a few adjustments:
The n:m relationship is normally implemented by a separate table - bill_product in this case.
I added serial columns as surrogate primary keys. In Postgres 10 or later consider an IDENTITY column instead. See:
Safely rename tables using serial primary key columns
Auto...
How can you make a custom keyboard in Android?
...;
// Lookup the KeyboardView
mKeyboardView= (KeyboardView)findViewById(R.id.keyboardview);
// Attach the keyboard to the view
mKeyboardView.setKeyboard( mKeyboard );
// Do not show the preview balloons
//mKeyboardView.setPreviewEnabled(false);
// Install the ke...
The SQL OVER() clause - when and why is it useful?
...d why I need it.
What does the function Over do? What does Partitioning By do?
Why can't I make a query with writing Group By SalesOrderID ?
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How to get the currently logged in user's user id in Django?
...E_CLASSES setting.
The current user is in request object, you can get it by:
def sample_view(request):
current_user = request.user
print current_user.id
request.user will give you a User object representing the currently logged-in user. If a user isn't currently logged in, request.user ...
How to get RelativeLayout working with merge and include?
I have been trying for a few days now to make my layouts more efficient by converting from using several levels of nested LinearLayouts to one RelativeLayout and have come across a few problems that I haven not been able to find a workaround for...
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How do I set the offset for ScrollSpy in Bootstrap?
...eventDefault();
$($(this).attr('href'))[0].scrollIntoView();
scrollBy(0, -offset);
});
I found it here: https://github.com/twitter/bootstrap/issues/3316
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