in core/src/main/scala/org/apache/pekko/persistence/r2dbc/query/scaladsl/mysql/MySQLQueryDao.scala [80:90]
override def selectBucketsSql(minSlice: Int, maxSlice: Int): String = {
sql"""
SELECT CAST(UNIX_TIMESTAMP(db_timestamp) AS SIGNED) / 10 AS bucket, count(*) AS count
FROM $journalTable
WHERE entity_type = ?
AND slice BETWEEN $minSlice AND $maxSlice
AND db_timestamp >= ? AND db_timestamp <= ?
AND deleted = false
GROUP BY bucket ORDER BY bucket LIMIT ?
"""
}