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Getting the SQL from a Django QuerySet [duplicate]
...cepted answer did not work for me when using Django 1.4.4. Instead of the raw query, a reference to the Query object was returned: <django.db.models.sql.query.Query object at 0x10a4acd90>.
The following returned the query:
>>> queryset = MyModel.objects.all()
>>> queryset...
How do malloc() and free() work?
...e kernel1, they just add it to a free list that calloc() and malloc() will consult later in order to reuse the released blocks.
Even if a free() wanted to return memory to the system, it would need at least one contiguous memory page in order to get the kernel to actually protect the region, so rel...
What is the most effective way for float and double comparison?
...a.org/wiki/IEEE_floating-point_standard.
//
// Template parameter:
//
// RawType: the raw floating-point type (either float or double)
template <typename RawType>
class FloatingPoint {
public:
// Defines the unsigned integer type that has the same size as the
// floating point number.
...
Storing SHA1 hash values in MySQL
...s the best choice :)
If you want to adopt this method, remember to leave $raw_output = false.
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How to pull a random record using Django's ORM?
...ust one query (assuming Postgres):
random_instance_or_none = Model.objects.raw('''
select * from {0} limit 1
offset floor(random() * (select count(*) from {0}))
'''.format(Model._meta.db_table)).first()
Be aware that this will raise an index error if the table is empty. Write yourself a mod...
How do I delete rows in a data frame?
...s that you wanted to delete. However, at some later point, you go into the raw data and have a look around and reorder the data. Your row deletion code will now delete the wrong rows, and worse, you are unlikely to get any errors warning you that this has occurred.
Better strategy
A better strateg...
How do I do a bulk insert in mySQL using node.js
...
This is a fast "raw-copy-paste" snipped to push a file column in mysql with node.js >= 11
250k row in few seconds
'use strict';
const mysql = require('promise-mysql');
const fs = require('fs');
const readline = require('readline');
as...
Sass combining parent using ampersand (&) with type selectors
...;.class { ... } } so why shouldn't you be able to do the same thing with a raw html element. Just because there was no way to do it as of the time OP posted doesn't mean he was incorrect to want the functionality to actually do it.
– Mike Mellor
Oct 3 '17 at 14...
Is there a link to GitHub for downloading a file in the latest release of a repository?
... https://api.github.com/repos/porjo/staticserve/releases/latest | \
jq --raw-output '.assets[0] | .browser_download_url'
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Python str vs unicode types
... byte. Text can be encoded in a specific encoding to represent the text as raw bytes(e.g. utf-8, latin-1...).
Note that unicode is not encoded! The internal representation used by python is an implementation detail, and you shouldn't care about it as long as it is able to represent the code points ...