CREATE TABLE happy_hour_member (hh_id DECIMAL, member_id DECIMAL, total_amount DECIMAL)
CREATE TABLE happy_hour (hh_id DECIMAL, shop_id DECIMAL, month TEXT, num_of_shaff_in_charge DECIMAL)
CREATE TABLE member (member_id DECIMAL, name TEXT, membership_card TEXT, age DECIMAL, time_of_purchase DECIMAL, level_of_membership DECIMAL, address TEXT)
CREATE TABLE shop (shop_id DECIMAL, address TEXT, num_of_staff TEXT, score DECIMAL, open_year TEXT)

Find the ids and names of members who are under age 30 or with black membership card.
SELECT name, member_id FROM member WHERE membership_card = 'Black' OR age < 30
SELECT "name", "member_id" FROM "member" WHERE "age" < 30 OR "membership_card" = 'Black'