join two table streams issue with flux

[tbs575]

I have two table streams one is

another is

try to join two tables stream with following flux

join.left(
    left: leftdata,
    right: rightdata,
    on: (l, r) => l.source_ip == r.source_ip,
    as: (l, r) => ({C: r.source_country}),
)

but can not get anything, should be retrun country information, is there problem? thanks

[MarcoPignati]

try playing with grouping the tables before joining them. I rememeber there was something in the docs about the need of grouping

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