kangkaisen commented on issue #1825: HLL support default value URL: https://github.com/apache/incubator-doris/pull/1825#issuecomment-532983775 > curl --location-trusted -u root:123456 -H column_separator:, -H label:test_uv_15 -H "columns:pin_id,idx,u1,u2,id=12" -T uv_test http://11.40.166.162:8030/api/test/test_uv_10/_stream_load Result ：hll_union_agg(uv1) and hll_union_agg(uv2) should be 0 I think we don't support this usage. When load data with HLL column, we must use hll_hash function, hll_hash function will handle null value.
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