hdorio opened a new issue, #1866:
URL: https://github.com/apache/orc/issues/1866
Currently, the JSON output generated by the `orc-contents` command line
utility stores decimal values using floating-point numbers. This can lead to
precision issues and inaccuracies, especially when dealing with financial data.
```bash
echo "1.1299999999999991" > test.csv
csv-import "struct<amount:decimal(38,18)>" test.csv test.orc
orc-contents test.orc > test.json
cat test.json | jq .amount
node -e "console.log(JSON.parse(fs.readFileSync('test.json',
'utf8'))['amount']);"
ruby -e "require 'json'; puts JSON.parse(File.read('test.json'))['amount'];"
```
test.csv: `1.1299999999999991`
test.json (test.orc as JSON): `{"amount": 1.129999999999999100}`
```
# outputs
[2024-03-30 15:55:24] Start importing Orc file...
[2024-03-30 15:55:24] Finish importing Orc file.
[2024-03-30 15:55:24] Total writer elasped time: 0.000281s.
[2024-03-30 15:55:24] Total writer CPU time: 0.000277s.
1.129999999999999 # Jq
1.129999999999999 # NodeJS
1.129999999999999 # Ruby
```
**Note the truncated `1`, the correct output should be `1.1299999999999991`**
Would it be acceptable to modify Decimal128ColumnPrinter (and
Decimal64ColumnPrinter) to return a string? `{"amount": "1.129999999999999100"}`
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