Function rewrite_lateral_view 

pub fn rewrite_lateral_view(sql: &str) -> SqlResult<String>

Rewrites Spark-style LATERAL VIEW to standard SQL CROSS JOIN LATERAL.

Transformations

-- Input
SELECT id, val FROM t LATERAL VIEW explode(tags) AS tag

-- Output
SELECT id, val FROM t CROSS JOIN LATERAL explode(tags) AS tag

Also handles LATERAL VIEW OUTER:

-- Input
SELECT id, val FROM t LATERAL VIEW OUTER explode(tags) AS tag

-- Output
SELECT id, val FROM t LEFT JOIN LATERAL explode(tags) AS tag ON TRUE