4 ms·
Kdb(been around since the 90s) https://code.kx.com/q/ref/aj/ https://code.kx.com/q/ref/aj/
by 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 agoCorrect. 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.