Things on this page are fragmentary and immature notes/thoughts of the author. Please read with your own judgement!

The analytical window function lead does not support ignoring NULL values. One workaround is to to use the analytical window fucntion first_value which supports ignoring NULL values.

first_value(my_col IGNORE NULLS …

Things on this page are fragmentary and immature notes/thoughts of the author. Please read with your own judgement!

• Dremel: Interactive Analysis of Web-Scale Datasets

• Dremel made simple with Parquet

• Arrow and Parquet Part 2: Nested and Hierarchical Data using Structs and Lists

Things on this page are fragmentary and immature notes/thoughts of the author. Please read with your own judgement!

Control Mouse

https://github.com/uoitdnalab/QEMU-Monitor-Control

How in QEMU send mouse_move, mouse_button, sendkey via some api

Turn on Mouse Cursor

qemu-system-x86_64 -show-cursor -enable-kvm -cdrom ubuntu-14.04.3-desktop-amd64.iso -m 2048 …

Things on this page are fragmentary and immature notes/thoughts of the author. Please read with your own judgement!

Installation

flatpak install flathub com.dropbox.Client

Configuration on Fedora Atomic Linux Distributions and Variants

Fedora Atomic Linux distributions changed the root (/) filesystem type to composefs for reasons. Composefs is not …

Things on this page are fragmentary and immature notes/thoughts of the author. Please read with your own judgement!

• git-leave

• reposcan

• repository-check-dirty

Things on this page are fragmentary and immature notes/thoughts of the author. Please read with your own judgement!

1. Do NOT check any of the following options unless you know what you are doing.

   • Read-only
     • You won't be able to write to the share directory.
   • Auto-mount
     • Auto-mount uses the root …