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Bill Ryder bryder

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It seems that it does not matter what timezone is on the server as long as you have the time set right for the current timezone, know the timezone of the datetime columns that you store, and are aware of the issues with daylight savings time.

On the other hand if you have control of the timezones of the servers you work with then you can have everything set to UTC internally and never worry about timezones and DST.

Here are some notes I collected of how to work with timezones as a form of cheatsheet for myself and others which might influence what timezone the person will choose for his/her server and how he/she will store date and time.

MySQL Timezone Cheatsheet

@bryder
bryder / query_planner.markdown
Created January 16, 2017 21:45 — forked from hgmnz/query_planner.markdown
PostgreSQL query plan and SQL performance notes

Types of index scans

Indexes

Sequential Scan:

  • Read every row in the table
  • No reading of index. Reading from indexes is also expensive.
# SSH Agent Functions
# Mark Embling (http://www.markembling.info/)
#
# How to use:
# - Place this file into %USERPROFILE%\Documents\WindowsPowershell (or location of choice)
# - Import into your profile.ps1:
# e.g. ". (Resolve-Path ~/Documents/WindowsPowershell/ssh-agent-utils.ps1)" [without quotes]
# - Enjoy
#
# Note: ensure you have ssh and ssh-agent available on your path, from Git's Unix tools or Cygwin.
#!/usr/bin/env python3
import http.client
http.client.HTTPConnection.debuglevel = 0
#import urllib.request
from urllib.request import Request, urlopen, HTTPCookieProcessor
from urllib.parse import urlencode
import argparse
import sys,os
#!/usr/bin/env ruby
## disconnect
# ./disconnect.rb -u yourusername
#
# This is a command-line utility for the bulk-downloading of run data from
# the connect.garmin.com web application, which has lackluster export
# capabilities.
#