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MySQL - SELECT WHERE field IN (subquery) - Extremely slow why?
...make queries faster,
don't do a SELECT * only select
the fields that you really need.
Make sure you have an index on relevant_field to speed up the equi-join.
Make sure to group by on the primary key.
If you are on InnoDB and you only select indexed fields (and things are not too complex) than MyS...
Python logging: use milliseconds in time format
...d of a struct_time, then (at least with modern versions of Python) we can call ct.strftime and then we can use %f to format microseconds:
import logging
import datetime as dt
class MyFormatter(logging.Formatter):
converter=dt.datetime.fromtimestamp
def formatTime(self, record, datefmt=None...
How to send email attachments?
...
best answer for me but there is a small error: replace import pathlibwith from pathlib import Path
– AleAve81
Apr 29 at 20:38
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How do I import CSV file into a MySQL table?
... MySQL table so that I can refactor into a sane format. I created a table called 'CSVImport' that has one field for every column of the CSV file. The CSV contains 99 columns , so this was a hard enough task in itself:
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Calculate the center point of multiple latitude/longitude coordinate pairs
...e of the center point of that set (aka a point that would center a view on all points)?
21 Answers
...
Case Insensitive Flask-SQLAlchemy Query
...ties(models.User.username).\
filter(models.User.username.ilike("%ganye%")).all()
The above example is very useful in case one needs to use Flask's jsonify for AJAX purposes and then in your javascript access it using data.result:
from flask import jsonify
jsonify(result=user)
...
How to set specific java version to Maven
On my machine I have two java versions installed: (1.6 and 1.7 installed manually by me). I need both of them for different projects. But for Maven I need 1.7, now my Maven uses 1,6 java version, how can I set Maven to use 1.7?
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How do I check that a number is float or integer?
...00% incorrect. The values null, empty string, 1.0 and numerous others will all register incorrectly as integers (even with the === check).
– whoblitz
Sep 11 '13 at 2:59
...
Window.open and pass parameters by post method
...').submit();
</script>
Edit:
To set the values in the form dynamically, you can do like this:
function openWindowWithPost(something, additional, misc) {
var f = document.getElementById('TheForm');
f.something.value = something;
f.more.value = additional;
f.other.value = misc;
win...
What is the meaning of the term “free function” in C++?
...hat free functions also don't take any arguments. But I am not sure. These all are my assumptions. So could anybody define free function?
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