Lookup with criteria (within date range and matching ID's)

[ipazin]

Hello @AlyKnime,

take a look at this topic as well:

Efficient way of doing a JOIN ... WHERE ...

I have two tables table_a and table_b the first table has a time span data in stored as two columns start_date and end_date the second table has time point data. I want to join those table in such a way that only those rows match where the time point lies within the time span. My current way if a two step. (1) do a cross join, than (2) apply a row filter. This is super inefficient. I have something like 300’000 rows in one table and 4*365 (4 years each having 365 days) in the other one. The re…

Br,
Ivan