- aNo explicit
respect nullsclause - bNon-standard alternative:
first_value(<expr> ignore nulls) - cNon-standard alternative:
first_value(<expr>, 'ignore nulls') - dNon-standard alternative:
last_value(<expr> ignore nulls) - eNon-standard alternative:
last_value(<expr>, 'ignore nulls')
Related
Normative References
T617, “FIRST_VALUE and LAST_VALUE functions” is defined as optional feature in ISO/IEC 9075-2:2023. It first appeared in SQL:2011.0

