hi! for roles that require proficiency in sql, does anybody know how proficient is proficient? because i've only mostly used python and r in school but self-learnt sql on coursera and im not sure where i stand in terms of my sql proficiency. is there any way i can tell? side note: im fairly proficient in python/r and have a few internship experiences using python but i know they will reject me as long as i say im not very proficient in sql