Function try_plan_join

nodedb-sql/src/planner/select/select_stmt.rs:429–444

Dispatch to the JOIN planner if the FROM contains joins.

(
    select: &Select,
    scope: &TableScope,
    catalog: &dyn SqlCatalog,
    functions: &FunctionRegistry,
    temporal: TemporalScope,
)

/// Dispatch to the JOIN planner if the FROM contains joins.
fn try_plan_join(
    select: &Select,
    scope: &TableScope,
    catalog: &dyn SqlCatalog,
    functions: &FunctionRegistry,
    temporal: TemporalScope,
) -> Result<Option<SqlPlan>> {
    if select.from.len() != 1 {
        return Ok(None);
    }
    let from = &select.from[0];
    if from.joins.is_empty() {
        return Ok(None);
    }
    crate::planner::join::plan_join_from_select(select, scope, catalog, functions, temporal)
}