hkpeaks commented on issue #35688:
URL: https://github.com/apache/arrow/issues/35688#issuecomment-1565830254
rdr, err := file.OpenParquetFile(config.File, false)
if err != nil {
fmt.Fprintln(os.Stderr, "error opening parquet file: ", err)
os.Exit(1)
}
rg := rdr.RowGroup(0)
col, err := rg.Column(1)
println("Descriptor: ", col.Descriptor())
println("Err: ", col.Err())
println("HasNext: ", col.HasNext())
println("Type: ", col.Type())
println("Descriptor-ColumnOrder: ", col.Descriptor().ColumnOrder())
println("Descriptor-ColumnPath: ", col.Descriptor().ColumnPath())
println("Descriptor-ConvertedTyp:", col.Descriptor().ConvertedType())
Results:
D:\Go\Parquet\OpenParquetFile>run v0.7.1.parquet
Descriptor: 0xc00005daa0
Err: (0x0,0x0)
HasNext: true
Type: 6
Descriptor-ColumnOrder: 0xc00000a028
Descriptor-ColumnPath: [1/1]0xc00005dac0
Descriptor-ConvertedTyp: 0
----------------------------------------------------------
How can I read all cell value from RowGroup(0) & Column(1) ?
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