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SELECT * WHERE NOT EXISTS
...ys return nothing unless there are no records at all in eotm_dyn, in which case it will return everything.
Assuming these tables should be joined on employeeID, use the following:
SELECT *
FROM employees e
WHERE NOT EXISTS
(
SELECT null
FROM eotm_dyn d
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jQuery Plugin: Adding Callback functionality
I'm trying to give my plugin callback functionality, and I'd like for it to operate in a somewhat traditional way:
6 Answer...
What is the way to quick-switch between tabs in Xcode 4
... CTRL + TAB is much better and not used by default. Pity that we can't bind last used tab.
– Pierre de LESPINAY
Jun 25 '13 at 11:20
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How to add a footer to a UITableView in Storyboard
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You can just drag a view to the bottom area of the tableView. You'll see in the hierarchy that it will be a subview of the tableview. You can then drag subviews such as labels and buttons there, adjust the height, etc.
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What is the difference between pluck and collect in Rails?
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"if you need some fields, use selectand collect" - can't you just use pluck with multiple attributes, like pluck(:id, :name)?
– Alexander
Dec 10 '14 at 15:03
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COUNT DISTINCT with CONDITIONS
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You can try this:
select
count(distinct tag) as tag_count,
count(distinct (case when entryId > 0 then tag end)) as positive_tag_count
from
your_table_name;
The first count(distinct...) is easy.
The second one, looks s...
What exactly does the Access-Control-Allow-Credentials header do?
...JSON-P. JSON-P always includes cookies with the request, and this behavior can lead to a class of vulnerabilities called cross-site request forgery, or CSRF.
In order to reduce the chance of CSRF vulnerabilities in CORS, CORS requires both the server and the client to acknowledge that it is ok to i...
Differences between git pull origin master & git pull origin/master
...pull changes from the origin remote, master branch and merge them to the local checked-out branch.
git pull origin/master will pull changes from the locally stored branch origin/master and merge that to the local checked-out branch. The origin/master branch is essentially a "cached copy" of what wa...
What is the easiest way to push an element to the beginning of the array?
I can't think of a one line way to do this. Is there a way?
6 Answers
6
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Using :after to clear floating elements
...e contents after the <ul> should be aligned correctly. Therefore i can build the following:
5 Answers
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