[Bug] ApplicationBackUpCleanTask Runtime Error#4253
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wolfboys merged 2 commits intoapache:devfrom Jun 8, 2025
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GOODBOY008
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Jun 8, 2025
GOODBOY008
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| backUpService.lambdaQuery() | ||
| .select(FlinkApplicationBackup::getAppId) | ||
| .groupBy(FlinkApplicationBackup::getAppId) | ||
| .having("count(*) > " + maxBackupNum) |
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| .having("count(*) > " + maxBackupNum) | |
| .having("COUNT(*) > {0}", maxBackupNum) |
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Yeah, you are right, this way of writing can prevent SQL injection, I have made the changes, thx!
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Gianzie
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* [Bug] ApplicationBackUpCleanTask Runtime Error * [Improve] Prevent SQL injection
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What changes were proposed in this pull request
In the current code, the table "t_flink_app_backup" will be cleaned at 01:00 everyday, and the sql is "SELECT id,app_id,sql_id,config_id,path,description,version,create_time FROM t_flink_app_backup GROUP BY app_id HAVING count(*) > 5"
But mysql8.0 sql_mode is "ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_ENGINE_SUBSTITUTION", so this clean task is always error.
So I think we can just get "FlinkApplicationBackup::getAppId" column.
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