dynamoid

https://github.com/veraticus/dynamoid

Ruby ORM for Amazon's DynamoDB

Gitlab::Database::DateTime#subtract_datetimes

Find the first of the `end_time_attrs` that isn't `NULL`. Subtract from it
the first of the `start_time_attrs` that isn't NULL. `SELECT` the resulting interval
along with an alias specified by the `as` parameter.

Note: For MySQL, the interval is returned in seconds.
      For PostgreSQL, the interval is returned as an INTERVAL type.

Source | Google | Stack overflow

Edit

git clone [email protected]:veraticus/dynamoid.git
cd dynamoid
open

Contribute

# Make a new branch

git checkout -b -your-name--update-docs-Gitlab--Database--DateTime-subtract_datetimes-for-pr

# Commit to git

git add git commit -m "better docs for Gitlab::Database::DateTime#subtract_datetimes"

# Open pull request

gem install hub # on a mac you can `brew install hub`

hub fork

git push <your name> -your-name--update-docs-Gitlab--Database--DateTime-subtract_datetimes-for-pr

hub pull-request

# Celebrate!