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MySQL Error 1215: Cannot add foreign key constraint
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I'm guessing that Clients.Case_Number and/or Staff.Emp_ID are not exactly the same data type as Clients_has_Staff.Clients_Case_Number and Clients_has_Staff.Staff_Emp_ID.
Perhaps the columns in the parent tables are INT UNSIGNED?
They need to be exactly the same...
What do querySelectorAll and getElementsBy* methods return?
Do getElementsByClassName (and similar functions like getElementsByTagName and querySelectorAll ) work the same as getElementById or do they return an array of elements?
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Django : How can I see a list of urlpatterns?
...r settings like this:
INSTALLED_APPS = (
...
'django_extensions',
...
)
And then, run this command in your terminal
./manage.py show_urls
For more information you can check the documentation.
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How to call Android contacts list?
I'm making an Android app, and need to call the phone's contact list. I need to call the contacts list function, pick a contact, then return to my app with the contact's name. Here's the code I got on the internet, but it doesnt work.
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How can I override Bootstrap CSS styles?
...has its own numerical 'weight':
100 points for IDs
10 points for classes and pseudo-classes
1 point for tag selectors and pseudo-elements
Note: If the element has inline styling that automatically wins (1000 points)
Among two selector styles browser will always choose the one with more weight. O...
How do you remove a specific revision in the git history?
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To combine revision 3 and 4 into a single revision, you can use git rebase. If you want to remove the changes in revision 3, you need to use the edit command in the interactive rebase mode. If you want to combine the changes into a single revision...
MySQL order by before group by
...t the max(post_date) by author is to use a subquery to return the max date and then join that to your table on both the post_author and the max date.
The solution should be:
SELECT p1.*
FROM wp_posts p1
INNER JOIN
(
SELECT max(post_date) MaxPostDate, post_author
FROM wp_posts
WHERE po...
AngularJS passing data to $http.get request
... {user_id: user.id}
});
See: http://docs.angularjs.org/api/ng.$http#get and https://docs.angularjs.org/api/ng/service/$http#usage (shows the params param)
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Disable soft keyboard on NumberPicker
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Just found this and it works like a charm:
myNumberPicker.setDescendantFocusability(NumberPicker.FOCUS_BLOCK_DESCENDANTS);
You can also set this in XML:
android:descendantFocusability="blocksDescendants"
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Convert timestamp to date in MySQL query
...in PHP (date('Y-m-d',$row->user_created_at)) - this (both variants, SQL and PHP) shows up as 2018-11-06
– Chris S.
Nov 7 '18 at 9:19
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