Tianhan Hu created SPARK-43362:
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Summary: Special handling of JSON type for MySQL connector
Key: SPARK-43362
URL: https://issues.apache.org/jira/browse/SPARK-43362
Project: Spark
Issue Type: Improvement
Components: SQL
Affects Versions: 3.4.0
Reporter: Tianhan Hu
MySQL JSON type is converted into JDBC {{VARCHAR}} type with precision of -1 on
some MariaDB drivers.
When receiving {{VARCHAR}} with negative precision, Spark will throw an error.
This ticket purposes to special case this scenario by directly converting JSON
type into StringType in MySQLDialect.
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