branch-4.1: [feature](jsonb) add json_object_flatten scalar function #62825 - #62873
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Introduce `json_object_flatten(JSONB) -> JSONB`. Turn a nested JSONB
object into a single-level JSONB whose keys are the dot-joined paths to
each leaf, mirroring NiFi `FlattenJson` *keep-arrays* semantics:
```
{"a":{"b":2}} -> {"a.b":2}
{"a":{"b":{"c":3}}} -> {"a.b.c":3}
{"a":[{"b":1}]} -> {"a":[{"b":1}]}
```
apache/doris-website#3589
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run buildall |
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skip buildall |
yiguolei
approved these changes
Apr 29, 2026
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Cherry-picked from #62825