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https://issues.apache.org/jira/browse/FLINK-40360?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yanquan Lv resolved FLINK-40360.
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Fix Version/s: cdc-3.7.0
Assignee: Mao Jiayi
Resolution: Fixed
Merged in master via 4e3767a75a7f0fd38b68941d061c7f12f1316ce1.
> Fix DECIMAL precision truncation when arithmetic result precision exceeds 19
> digits
> -----------------------------------------------------------------------------------
>
> Key: FLINK-40360
> URL: https://issues.apache.org/jira/browse/FLINK-40360
> Project: Flink
> Issue Type: Improvement
> Components: Flink CDC
> Reporter: Mao Jiayi
> Assignee: Mao Jiayi
> Priority: Major
> Labels: pull-request-available
> Fix For: cdc-3.7.0
>
>
> Flink CDC supports DECIMAL types with precision up to 38. However, DECIMAL
> types inferred by pipeline transform expressions are currently limited to a
> maximum precision of 19.
> When the required precision of an expression result exceeds 19, the inferred
> result type is truncated. This reduces the number of integer digits that the
> result type can represent and may cause otherwise valid DECIMAL values to
> overflow and become NULL during transform processing.
> h3. Expected Behavior
> Pipeline transform expressions should correctly infer and process DECIMAL
> results within the precision range supported by Flink CDC, without silently
> truncating the result precision or losing valid values.
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