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https://issues.apache.org/jira/browse/FLINK-20861?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17259455#comment-17259455
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Q Kang commented on FLINK-20861:
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Also if the community thinks this is worth doing, please assign it to me.
Thanks.
> Provide an option for serializing DECIMALs in JSON as plain number instead of
> scientific notation
> -------------------------------------------------------------------------------------------------
>
> Key: FLINK-20861
> URL: https://issues.apache.org/jira/browse/FLINK-20861
> Project: Flink
> Issue Type: Improvement
> Components: Formats (JSON, Avro, Parquet, ORC, SequenceFile)
> Reporter: Q Kang
> Priority: Minor
>
> When using DECIMAL types in Flink SQL along with JSON format, it is quite
> common to see that some large values are written out as scientific notation.
> For example:
> Definition: `orderId DECIMAL(20, 0)`
> Input: `\{"orderId":454621864049246170}`
> Output (without transformations): `\{"orderId":4.5462186404924617E+17}`
> However, values in plain numbers are easier to understand and more convenient
> for the case shown above. So we can provide a boolean option (say
> `json.use-plain-decimals`?) to make this behavior tunable.
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