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Count(*) vs Count(1) - SQL Server
... expression: so it's the same as COUNT(*).
The optimizer recognizes it for what it is: trivial.
The same as EXISTS (SELECT * ... or EXISTS (SELECT 1 ...
Example:
SELECT COUNT(1) FROM dbo.tab800krows
SELECT COUNT(1),FKID FROM dbo.tab800krows GROUP BY FKID
SELECT COUNT(*) FROM dbo.tab800krows
SELE...
How to fix Git error: object file is empty?
...f6c73fb68466264c68e) is corrupt
Step 3: Remove the empty file. I figured what the heck; its blank anyway.
nathanvan@nathanvan-N61Jq:~/workspace/mcmc-chapter$ rm .git/objects/8b/61d0135d3195966b443f6c73fb68466264c68e
rm: remove write-protected regular empty file `.git/objects/8b/61d0135d3195966b...
When NOT to use yield (return) [duplicate]
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What are the cases where use of yield will be limiting, unnecessary, get me into trouble, or otherwise should be avoided?
It's a good idea to think carefully about your use of "yield return" when dealing with recursively de...
MySQL and GROUP_CONCAT() maximum length
...e_numeric must be >= 4" is the case here. I actually used this to test what happens when you exceed the group_concat_max_len value.
– Thomas F
Nov 18 '16 at 18:15
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What is the difference D3 datum vs. data?
...new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f13728402%2fwhat-is-the-difference-d3-datum-vs-data%23new-answer', 'question_page');
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Post as a guest
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Timeout command on Mac OS X?
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What does it look like to use it directly, without wrapping it in a function?
– mwfearnley
Nov 8 '16 at 9:24
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How to simulate Android killing my process
...er icon but on other devices it will start the ActivityA instead.
This is what Android docs are saying about that:
Normally, the system clears a task (removes all activities from the stack above the root activity) in certain situations when the user re-selects that task from the home screen. Ty...
Can lambda functions be templated?
...s. (Otherwise the constraints couldn't be checked.) Can foo invoke bar(x)? What constraints does the lambda have (the parameter for it is just a template, after all)?
Concepts weren't ready to tackle this sort of thing; it'd require more stuff like late_check (where the concept wasn't checked until...
Does git return specific return error codes?
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I set-up a test to fail. This is what I got:
$ git merge newbranch
Auto-merging test.txt
CONFLICT (content): Merge conflict in test.txt
Automatic merge failed; fix conflicts and then commit the result.
$ echo $?
1
Git returns 0 when it merges correctly, ...
Configuring so that pip install can work from github
...nstall private packages to our production servers. This question concerns what needs to be in the github repo in order for the install to be successful.
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