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psycopg2: insert multiple rows with one query
...s import execute_values
execute_values(cur,
"INSERT INTO test (id, v1, v2) VALUES %s",
[(1, 2, 3), (4, 5, 6), (7, 8, 9)])
Previous Answer:
To insert multiple rows, using the multirow VALUES syntax with execute() is about 10x faster than using psycopg2 executemany(). Indeed, executemany(...
Convert pem key to ssh-rsa format
...A pair
in PEM format:
openssl rsa -in dummy-xxx.pem -pubout
in OpenSSH v2 format see:
ssh-keygen -y -f dummy-xxx.pem
Notes
OS and software version:
[user@test1 ~]# cat /etc/redhat-release ; uname -a ; openssl version
CentOS release 6.5 (Final)
Linux test1.example.local 2.6.32-431.el6.x86_6...
What is the convention for word separator in Java package names?
...e, or login names.
Examples
com.sun.eng
com.apple.quicktime.v2
edu.cmu.cs.bovik.cheese
References
java.sun.com - Code Conventions/Naming
Note that in particular, anything following the top-level domain prefix isn't specified by the above document. The JLS also agrees with...
Difference between “git add -A” and “git add .”
...
I don't think this is correct. Using git v2.10.windows.2 'git add' returns 'Nothing specified, nothing added'. 'git add -A' adds all changed files. Which suggests '-A' is not the default.
– Neutrino
Oct 5 '17 at 12:47
...
How can I do string interpolation in JavaScript?
...them simply as
> `foo
... bar`
'foo\n bar'
Note: I used io.js v2.4.0 to evaluate all the template strings shown above. You can also use the latest Chrome to test the above shown examples.
Note: ES6 Specifications are now finalized, but have yet to be implemented by all major browsers. ...
Git diff -w ignore whitespace only at start & end of lines
...ks you to be explicit. See some options here: https://git-scm.com/book/en/v2/Customizing-Git-Git-Configuration
As stated, git diff -b or git diff --ignore-space-change will ignore spaces at line ends. If you desire that setting to be your default behavior, the following line adds that intent to y...
Is there a way to make a PowerShell script work by double clicking a .ps1 file?
...: J.P. Blanc - jean-paul_blanc@silogix-fr.com
Prerequisite: PowerShell V2 on Vista and later versions.
Copyright 2010 - Jean Paul Blanc/Silogix
.LINK
Script posted on:
http://www.silogix.fr
.EXAMPLE
PS C:\silogix> Set-PowAsDefault -On
Call Powershell for .PS1 files.
Do...
How to compare two files not in repo using git
...23) that "--no-index" was not respected. This was fixed in Git for Windows v2.21.0 (February 26th 2019).
– StackzOfZtuff
Jun 27 '19 at 11:18
...
Why do indexes in XPath start with 1 and not 0?
... of 2000. With the v1.0 update, RSS included support for XML.
During 2002 v2.0 was released in September as RSS (Really Simple Syndication) and began to evolve into a major internet technology. In it’s early history, RSS feeds (and the XML data they contained) were read by humans in the raw forma...
What is the “Temporary ASP.NET Files” folder for?
I've discovered this folder in C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files and have a few questions.
...