SQL Addition

The + operator adds two numeric values together — works on literals, columns, or any combination of both.

What & Why

Plain + adds two numbers. It works between two columns, a column and a literal, or two literals — the same operator in every case.

BUSINESS QUESTION

Marketing wants total engagement from opens and clicks for each email send.

id	campaign_id	sent_at	recipients	opens	clicks	unsubscribes	bounces
201	1	2024-01-20 15:00:00+00	1200	540	180	9	24
202	2	2024-02-15 16:30:00+00	800	420	96	5	12
203	3	2024-03-18 13:00:00+00	1500	610	225	14	31
204	4	2024-04-08 14:00:00+00	0	0	0	0	0

EXAMPLE QUERY

SELECT
  id AS send_id,
  opens + clicks AS engagement_actions
FROM marketing.email_sends
ORDER BY send_id;

RESULT — exact output from the displayed Queryflo rows

Each value is the actual opens-plus-clicks sum for one email send.