gitlab-org--gitlab-foss/lib/gitlab/database/date_time.rb
gfyoung 7e6f6e1603 Enable even more frozen string in lib/gitlab
Enables frozens string for the following:

* lib/gitlab/conflict/**/*.rb
* lib/gitlab/cross_project_access/**/*.rb
* lib/gitlab/cycle_analytics/**/*.rb
* lib/gitlab/data_builder/**/*.rb
* lib/gitlab/database/**/*.rb
* lib/gitlab/dependency_linker/**/*.rb
* lib/gitlab/diff/**/*.rb
* lib/gitlab/downtime_check/**/*.rb
* lib/gitlab/email/**/*.rb
* lib/gitlab/etag_caching/**/*.rb

Partially addresses gitlab-org/gitlab-ce#47424.
2018-11-06 22:47:32 -08:00

33 lines
1.3 KiB
Ruby

# frozen_string_literal: true
module Gitlab
module Database
module DateTime
# 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.
def subtract_datetimes(query_so_far, start_time_attrs, end_time_attrs, as)
diff_fn = subtract_datetimes_diff(query_so_far, start_time_attrs, end_time_attrs)
query_so_far.project(diff_fn.as(as))
end
def subtract_datetimes_diff(query_so_far, start_time_attrs, end_time_attrs)
if Gitlab::Database.postgresql?
Arel::Nodes::Subtraction.new(
Arel::Nodes::NamedFunction.new("COALESCE", Array.wrap(end_time_attrs)),
Arel::Nodes::NamedFunction.new("COALESCE", Array.wrap(start_time_attrs)))
elsif Gitlab::Database.mysql?
Arel::Nodes::NamedFunction.new(
"TIMESTAMPDIFF",
[Arel.sql('second'),
Arel::Nodes::NamedFunction.new("COALESCE", Array.wrap(start_time_attrs)),
Arel::Nodes::NamedFunction.new("COALESCE", Array.wrap(end_time_attrs))])
end
end
end
end
end