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MySQL Query - Records between Today and Last 30 Days
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SELECT
*
FROM
< table_name >
WHERE
< date_field > BETWEEN DATE_SUB(NOW(), INTERVAL 30 DAY)
AND NOW();
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Proper stack and heap usage in C++?
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Good explanation, though in a multithreaded scenario with frequent allocations and/or deallocations, heap is a point of contention, thus affecting performance. Still, Scope is almost always the deciding factor.
– peterchen
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How to get Linux console window width in Python
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COLUMNS isn't exported by default in Bash, that's why os.environ["COLUMNS"] doesn't work.
– Kjell Andreassen
Dec 5 '12 at 17:33
38
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Display lines number in Stack Trace for .NET assembly in Release mode
...ckTrace.Substring(err.StackTrace.Length - 5)
Dim i As Integer = 0
While i < lineGrab.Length
If (IsNumeric(lineGrab(i))) Then
lineNo.Append(lineGrab(i))
End If
i += 1
End While
'LineNo holds the number as a string
C# version:
string lineGrab = error.Stac...
Git interactive rebase no commits to pick
I'm on master and I did rebase -i <my_branch>
4 Answers
4
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How to search a specific value in all tables (PostgreSQL)?
...s typically encoded in more recent versions of postgres), you may need to ALTER DATABASE your_db_name SET bytea_output = 'escape'; on the database (or a copy thereof) before dumping it. (I'm not seeing a way to specify this just for a pg_dump command.)
– phils
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How do I check if a column is empty or null in MySQL?
...rement was to find SELECT * FROM T WHERE some_col IS NOT NULL OR same_col <> ' '; and SELECT * FROM T WHERE NULLIF(some_col, ' ') IS NOT NULL; worked for me in MySQL. Hope this will be useful.
– Dinuka Dayarathna
Mar 9 '17 at 9:49
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git - skipping specific commits when merging
...applied, and one of those (maint~3) is not to be merged back into master, although all the others should be. You do this in three stages: actually merge everything before that one, tell git to mark maint~3 as merged even when it isn't, and then merge the rest. The magic is:
bash <master>$ git ...
Heroku Postgres - terminate hung query (idle in transaction)
...ate", simply:
kill 1234
DO NOT:
kill -9 1234
... that will often result in the the whole postgres server going down in flames, then you may as well restart postgres. Postgres is pretty robust, so the data won't be corrupted, but I'd recommend against using "kill -9" in any case :-)
A long-...
How to deserialize a JObject to .NET object
...JObject;
// Copy to a static Album instance
Album album = jalbum.ToObject<Album>();
Documentation: Convert JSON to a Type
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