Week 08 Day 3 - Intro to SQL

[mdewey]

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title: INSERT INTO Student (knowledge) VALUES ('SQL') draft: true

Every application uses data in some way. This will help you set up your development environment as well as get used to querying databases.

Objectives

• Install Postgres
• Create a database for Employees
• Write some queries to use the database

Requirements

For Mac:

Use homebrew to install Postgres

brew install postgres

Windows:

• head here and download the install https://www.enterprisedb.com/downloads/postgres-postgresql-downloads and follow the prompts

pgcli

Install pgcli

• For Mac you can brew
• For Windows you need to install python and pip

Explorer Mode

• [x] Install Postgres

• [x] Create a database called CompanyDatabase

• [x] Create a table Called Employees

• [x] Add the following columns to the table, Use your best judgement for data types

  • Id (Primary Key)
  • FullName
  • Salary
  • Position
  • PhoneExtension
  • IsPartTime

• [x] Create queries that can do the following:

  • [x] Select all columns for all employees
  • [ ] Select only the FullName and Phone Extension for Only Full Time employees
  • [x] Insert a new Part time employee, as a software developer, part time, with a salary of 450
  • [x] Update all Employees that are the Cooks to have a salary of 500
  • [ ] Delete all Employees that have the full name of "Lazy Lynn"
  • [x] Update all Employees to be full time
  • [x] Add a column to the table called ParkingSpotNumber as a string that up to 10 characters long

• [x] Turn in the above queries as a gist

Adventure Mode

• [ ] Work on the C#/Ruby Koans
• [ ] Work on your final project

Epic Mode

• [ ] Investigate working with C# and Postgres

Additional Resources

• https://www.postgresql.org/docs/10/static/index.html

  Recommended Practice:

• For more practice, Hackerrank has a SQL Track

[JOLee83]

https://gist.github.com/JOLee83/06484592ebba81b83923f218e92e3212

[mdewey]

Your homework was marked: Meets Expectations

“Yas” — via Jason L Perry