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SQL Cheatsheet

Pulling data from databases

sql2csv : documentation sql2csv: executes an SQL query on a large variety of SQL databases (e.g. MS SQL, MySQL, Oracle, PostgreSQL, Sqlite) outputs the result to a CSV ...

Getting started with csvkit

What is csvkit? csvkit: is a suite of command-line tools is developed in Python by Wireservice offers data processing and cleaning capabilities on CSV files ...

Downloading data using curl

What is curl? curl: is short for Client for URLs is a Unix command line tool transfer data to and from a server is used to download data from HTTP(S) sites ...

Basic functions in Bash

IF statements

Basic variables in Bash

Assigning Variables Similar to other languages, you can assign variables with the equal notation. var1='Moon; Then reference with $ notation. echo $var R...

Introduction to Bash Scripting

Why Bash Scripting? (Bash) Bash stands for ‘Bourne Again Shell’ Developed in the 80’s but a very popular shell today. Default in many Unix systems, Macs AWS, Google, ...

Deleting and Altering Triggers

Deleting Table and View Triggers DROP TRIGGER PreventNewDiscounts; Deleting Database Triggers DROP TRIGGER PreventNewDiscounts; DROP TRIGGER Preven...

Known Limitations of Triggers

Advantages of Triggers Used for database integrity Enforece business rules directly in the database Control on which statements are allowed in a database Implem...