JNSimba opened a new pull request, #64740: URL: https://github.com/apache/doris/pull/64740
## Proposed changes `JdbcClient` / `JdbcMySQLClient.getPrimaryKeys` returned primary-key columns in whatever order the JDBC driver yielded them. `DatabaseMetaData.getPrimaryKeys` orders its rows by `COLUMN_NAME`, not `KEY_SEQ`, so for a composite primary key whose definition order differs from alphabetical order (e.g. `PRIMARY KEY (tenant_id, order_id)`), the columns came back reordered. This affected the resulting Doris key columns and the bucket hash distribution. This reorders the columns by their 1-based `KEY_SEQ`. Single-column keys are unaffected; PostgreSQL is unaffected (its driver already returns KEY_SEQ order); only MySQL (whose driver sorts by column name) is corrected. ## Tests Updated the composite-PK regression to assert the real definition order; `fe-core` compiles. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
