How to group by multiple columns in cratedb

Question

Can someone help me on group by multiple columns in crate?

For ex.

SELECT COUNT(1), x, y from table GROUP BY x,y

Thanks in Advance.

Answer 1

Your grouping statement seems good (you should use count(*) though, CrateDB opimizes for that specifically, count(1) will be slower), but the CircuitBreakerException and the low amount of memory stated there indicates a memory misconfiguration.

Can you set

CRATE_MIN_MEM=16g
CRATE_MAX_MEM=16g
CRATE_HEAP_SIZE=16g

What operating system are you working on? CRATE_HEAP_SIZE should automatically set CRATE_MIN_MEM and CRATE_MAX_MEM , but there might be a problem with precedence...

Cheers, Claus