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I need to pop up and trash away a “middle” commit in my master branch. How can I do it?
For example, in the following master branch, I need to trash just the commit af5c7bf16e6f04321f966b4231371b21475bc4da, which is the second due to previous rebase:
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postgresql return 0 if returned value is null
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Counting DISTINCT over multiple columns
... you are trying to improve performance, you could try creating a persisted computed column on either a hash or concatenated value of the two columns.
Once it is persisted, provided the column is deterministic and you are using "sane" database settings, it can be indexed and / or statistics can be ...
Submit form using a button outside the tag
...ontrol.
http://www.w3.org/TR/html4/interact/forms.html#h-17.2.1
From the comments
I have a multi tabbed settings area with a button to update all, due
to the design of it the button would be outside of the form.
Why not place the input inside the form, but use CSS to position it elsewhere ...
Transaction isolation levels relation with locks on table
...3 concurrent processes A, B and C. A starts a transaction, writes data and commit/rollback (depending on results). B just executes a SELECT statement to read data. C reads and updates data. All these process work on the same table T.
READ UNCOMMITTED - no lock on the table. You can read data in th...
Difference between Destroy and Delete
... edited Mar 5 '18 at 21:56
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answered Mar 31 '14 at 9:03
user740584user740584...
“From View Controller” disappears using UIViewControllerContextTransitioning
...nspect the view hierarchy after the screen goes black. The key UIWindow is completely empty – no view hierarchy at all!
I played around a bit and it looks like there is an easy workaround, for simple cases. You can just re-add the toViewController's view as a subview of the key window's:
trans...
How do I determine if a port is open on a Windows server? [closed]
...a the default option 'telnet' is not recognized as an internal or external command, operable program or batch file. To solve this, just enable it: Click *Start** → Control Panel → Programs → Turn Windows Features on or off. In the list, scroll down and select Telnet Client and click OK.
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How to test an SQL Update statement before running it?
...n. Assuming he wants to check the result, I conclude his statement is more complex than a 'SET bar = 42', so within his session he will be able to make several queries to test the resulting set of data ...
– Imad Moqaddem
Jun 13 '12 at 9:06
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