SammySteiner/dot-align-sql

This repository is a quick way to demo the SQL queries for the DotAlign code challenge.

Given the documented database tables (with some sample data) write a SQL query that...

1. ... lists of each domain in the system
2. ... lists of each email address along with the owner’s real name
3. ... lists each domain and the total number of emails sent to it (combining To, CC, & BCC)

In terminal

1. clone this repository with git clone '[email protected]:SammySteiner/dot-align-sql.git'
2. cd into this directory cd dot-align-sql
   While using a mac:
3. if you do not have an up-to-date version of Ruby, you may need to update. If you have homebrew installed you can run brew install ruby
4. If you do not have the bundler gem installed, run gem install bundler
5. If you do not have the sqlite3 gem installed, run gem install sqlite3
   If any of these steps gives you an error, you may not have the right permissions, reach out to me.
6. run bundle install to install the required gems
7. run ruby bin/create_and_seed_db.rb to create and seed the Database
   You're now ready to test out the query files. If you're using Windows, reach out and we'll find a way to set you up to run these files.

To view a printout in terminal of the sql queries, input the following commands:

1. ruby lib/sql_query_one.rb
2. ruby lib/sql_query_two.rb
3. ruby lib/sql_query_three.rb

The SQL queries for each of the challenges are:

1. SELECT * FROM domain;
2. SELECT email_address.address_text, person.name
   FROM email_address
   JOIN person ON email_address.person_id == person.id;
3. SELECT domain.url_text, COUNT(*) as total_sent
   FROM domain
   JOIN email_address ON domain.id == email_address.domain_id
   JOIN participant ON email_address.id == participant.email_address_id
   WHERE participant.participant_type_id == 2
   OR participant.participant_type_id == 3
   OR participant.participant_type_id == 4
   GROUP BY domain.url_text;