Jzjsnow opened a new pull request, #4500:
URL: https://github.com/apache/flink-cdc/pull/4500
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## What is the purpose of this pull request?
MySQL allows declaring numeric columns with `ZEROFILL` alone (e.g. `INT
ZEROFILL`),
which implicitly implies `UNSIGNED`. `MySqlTypeUtils` previously only
recognized
`<TYPE> UNSIGNED ZEROFILL` and threw `UnsupportedOperationException` for bare
`<TYPE> ZEROFILL`, breaking schema evolution for such tables.
This PR adds explicit `<TYPE> ZEROFILL` constants and mapping branches that
mirror
the existing `UNSIGNED ZEROFILL` mappings, so ZEROFILL-only columns are
converted
to the same Flink type as their `UNSIGNED ZEROFILL` counterparts.
## Brief change log
- Add `<TYPE> ZEROFILL` constants for all numeric types in
`flink-connector-mysql-cdc`/ `flink-cdc-pipeline-connector-mysql`
`MySqlTypeUtils`:
`TINYINT`, `SMALLINT`, `MEDIUMINT`, `INT`, `INTEGER`, `BIGINT`, `REAL`,
`FLOAT`, `DOUBLE`, `DOUBLE PRECISION`, `NUMERIC`, `FIXED`, `DECIMAL`.
- Add unit tests in `MySqlTypeUtilsTest` covering ZEROFILL type mappings for
all numeric types
## Verifying this change
<!-- Describe how this change can be verified. -->
This change added tests and can be verified as follows:
- Added unit tests in `MySqlTypeUtilsTest`
## Documentation
- Does this pull request introduce a new feature? (no)
- If yes, how is the feature documented? (not applicable / docs / JavaDocs /
not documented)
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