Module subquery 

WHERE-clause subquery planning: IN, EXISTS, and scalar subqueries rewritten into semi / anti / cross joins.

Re-exports

pub use extract::SubqueryExtraction;

pub use extract::SubqueryJoin;

pub use extract::extract_subqueries;

Modules

exists

EXISTS / NOT EXISTS lowered to a semi / anti join.

extract

The WHERE-clause walk that pulls subquery predicates out into joins.

in_list

IN (SELECT ...) and NOT IN (SELECT ...) lowered to semi / anti joins.

scalar

Scalar subqueries: col > (SELECT AGG(...) FROM tbl ...).