Moelf commented on issue #384:
URL: https://github.com/apache/arrow-julia/issues/384#issuecomment-1588504053
I don't think it's fixed:
```julia
julia> col1 = Vector{Union{Int64, String}}[
["one", 2],
["one", 2, 3],
["one", 2, 3, 4],
["one", 2, 3, 4, 5]];
julia> df = DataFrame(;col1)
4×1 DataFrame
Row │ col1
│ Array…
─────┼───────────────────────────────────
1 │ Union{Int64, String}["one", 2]
2 │ Union{Int64, String}["one", 2, 3]
3 │ Union{Int64, String}["one", 2, 3…
4 │ Union{Int64, String}["one", 2, 3…
julia> a = tempname()
"/tmp/jl_IngNyJwngp"
julia> Arrow.write(a, df)
"/tmp/jl_IngNyJwngp"
julia> Arrow.Table(a)
Arrow.Table with 4 rows, 1 columns, and schema:
:col1 … SubArray{Union{Missing, Int64, String}, 1,
Arrow.DenseUnion{Union{Missing, Int64, String},
Arrow.UnionT{Arrow.Flatbuf.UnionMode.Dense, nothing, Tuple{Union{Missing,
Int64}, String}}, Tuple{Arrow.Primitive{Union{Missing, Int64}, Vector{Int64}},
Arrow.List{String, Int32, Vector{UInt8}}}}, Tuple{UnitRange{Int64}}, true}
julia> Arrow.Table(a).col1[1]
2-element view(::Arrow.DenseUnion{Union{Missing, Int64, String},
Arrow.UnionT{Arrow.Flatbuf.UnionMode.Dense, nothing, Tuple{Union{Missing,
Int64}, String}}, Tuple{Arrow.Primitive{Union{Missing, Int64}, Vector{Int64}},
Arrow.List{String, Int32, Vector{UInt8}}}}, 1:2) with eltype Union{Missing,
Int64, String}:
"one"
2
```
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