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MySQL “NOT IN” query
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Thanks for the comment @Basti! Spent a lot of time trying to understand why the query wasn't working as expected.
– gvas
Mar 23 '16 at 2:17
3
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How to see log files in MySQL?
...llowing
log_slow_queries = /var/log/mysql/mysql-slow.log
long_query_time = 2
log-queries-not-using-indexes
step3: save the file and restart mysql using following commands
service mysql restart
To enable logs at runtime, login to mysql client (mysql -u root -p) and give:
SET GLOBAL gener...
Using C# to check if string contains a string in string array
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How has this answer been upvoted so many times? 5 years after the question is asked and the solution is basically reversed of what the question is asking.
– Fus Ro Dah
Mar 27 '18 at 21:46
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How to create streams from string in Node.Js?
...unction was added in 10.7, and behaved the way I originally described. Sometime since, strings no longer need to be wrapped in arrays (since 12.3, it no longer iterates each character individually).
– Fizker
May 17 at 21:32
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Websocket API to replace REST API?
I have an application whose primary function works in real time, through websockets or long polling.
10 Answers
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Git Push into Production (FTP)
... to a FTP server,
which have changed since the last
upload. This saves time and bandwith.
Even if you play with different
branches, git-ftp.sh knows which files
are different. No ordinary FTP client
can do that.
git-ftp by Edward Z. Yang is a
simple script written in python for
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Django: multiple models in one template using forms [closed]
...he better options around. If you don't get too fancy with it it saves some time. I can imagine when you want to start customizing and doing non-trivial forms it would be easier to roll your own. Easily mixing forms and contexts in views is the first feature I really think I missed in django.
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Favourite performance tuning tricks [closed]
...Nice Joins
By default the optimiser will only consider the tables 4 at a time.
This means that in joins with more than 4 tables, it has a good chance of choosing a non-optimal query plan
Break up the Join
Can you break up the join?
Pre-select foreign keys into a temporary table
Do half the ...
How to best position Swing GUIs?
...owing system or at the current location (returned by getLocation) the next time the Window is made visible. This behavior resembles a native window shown without programmatically setting its location. Most windowing systems cascade windows if their locations are not explicitly set. The actual locati...
Remove whitespaces inside a string in javascript
...his regExp is faster because you can remove one or more spaces at the same time.
If you change the replacement empty string to '$', the difference becomes much clearer:
var string= ' Q W E R TY ';
console.log(string.replace(/\s/g, '$')); // $$Q$$W$E$$$R$TY$
console.log(string.replace(/\s+/g,...