Module join 

JOIN planning: extract left/right tables, equi-join keys, join type.

Re-exports

pub use plan::plan_join_from_select;

Modules

array_arm

ARRAY_* table-valued function as a JOIN source.

constraint

ON-clause / USING-clause extraction: equi-join keys + non-equi residual.

plan

JOIN planning entry: builds left + right scans (or array-TVF arms), attaches projection/filters/aggregation.