Question

I have two tables record and share. record has columns: name and id. share has columns id.

I want to find the rows which are present in record but not present in share.

How can I do this?

Answer 1

SQL LEFT JOIN returns all rows from the left table even if there are no matches in the right table

SELECT name, id
FROM record r LEFT JOIN share s on r.id = s.id
WHERE s.id is null