Doing a WHERE IN on multiple columns in Postgresql

Question

I have a table \'answers\' with an indexed \'problem_id\' integer column, a \'times_chosen\' integer column, and an \'option\' column that\'s a varchar. Currently the only v

Answer 1

You can join against a virtual table of sorts:

SELECT * FROM answers
JOIN (VALUES (4509, 'B'), (622, 'C'), (1066, 'D'), (4059, 'A'), (4740, 'A')) 
    AS t (p,o)
ON p = problem_id AND o = option

You can do something similar with UPDATE.