Constant MAX_LOGGED_SQL_LEN 

const MAX_LOGGED_SQL_LEN: usize = _; // 8_192usize

The maximum length in bytes of SQL text included in a log line.

Loki rejects a log entry larger than 256 KiB and drops it whole. A span’s fields are repeated in every event logged inside the span, twice when it is the innermost span (the JSON format writes both span and spans), so one statement can appear several times in an entry.