3 ms·

QuestDB: https://questdb.io/docs/reference/sql/join/#asof-join https://questdb.io/docs/reference/sql/join/#asof-join

• maxxen 3y ago
  Kdb(been around since the 90s) https://code.kx.com/q/ref/aj/ https://code.kx.com/q/ref/aj/
  • hodgesrm 3y ago
    Correct. As I recall ClickHouse ASOF joins drew direct inspiration from this feature in Kdb+ and were in fact implemented by an engineer with a background in financial apps.