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[fix] change percentile_approx return from nan to null (#7512)

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Change function percentile_approx return value from nan to null (like hive.) to ensure that return value of function percentile_approxcan be parsed by JDBC successfully.
Co-authored-by: weizuo <weizuo@xiaomi.com>
This commit is contained in:
weizuo93
2021-12-30 10:24:35 +08:00
committed by GitHub
parent 4d01219849
commit 7357089e4e
1 changed files with 5 additions and 1 deletions
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6
be/src/exprs/aggregate_functions.cpp
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@ -347,7 +347,11 @@ DoubleVal AggregateFunctions::percentile_approx_finalize(FunctionContext* ctx,
double result = percentile->digest->quantile(quantile);
delete percentile;
return DoubleVal(result);
if (isnan(result)) {
return DoubleVal(result).null();
} else {
return DoubleVal(result);
}
}
struct AvgState {