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Continue to ChatMySQL/QueryScript use case: DELETE all but top N records per group https://code.openark.org/blog/mysql/mysqlqueryscript-use-case-delete-all-but-top-n-records-per-group
MySQL/QueryScript use case: DELETE all but top N records per group https://code.openark.org/blog/mysql/mysqlqueryscript-use-case-delete-all-but-top-n-records-per-group