pub fn extract_sqlcommenter(sql: &str) -> Option<SqlCommenterTrace<'_>>Expand description
Extract a sqlcommenter trace context from sql, if it carries one.
This function examines only genuine comment regions.
SELECT '/*traceparent=…*/' is a string literal, not a comment, and gives
None. That is the reason this function walks the statement instead of a
match on the text.
The cost when no tag is present is one substring search. The scan starts
only when the word traceparent appears somewhere in sql.