Few theory questions, lots of practical questions, 1 - 2 homework tasks. Long by duration. Interesting challenges and problems to solve. Some tricky non obvious solutions were explained by company presenter. Allowed to quick `google` for answers.
Preguntas de entrevista [1]
Pregunta 1
implement a “spaceship” operator for SQL for all types possible
test with
select 'a'::text<=>'b', 1<=> -3, now()<=> now()-interval '1m';