Function scan_alias_from_relation

nodedb-sql/src/planner/join/plan.rs:154–162

Extract an alias (or table name) from a named-table `TableFactor`.

(factor: &ast::TableFactor)

/// Extract an alias (or table name) from a named-table `TableFactor`.
fn scan_alias_from_relation(factor: &ast::TableFactor) -> Option<String> {
    match factor {
        ast::TableFactor::Table { name, alias, .. } => alias
            .as_ref()
            .map(|a| crate::parser::normalize::normalize_ident(&a.name))
            .or_else(|| crate::parser::normalize::normalize_object_name_checked(name).ok()),
        _ => None,
    }
}

/// True when the join operator represents a LEFT join variant.
fn is_left_join_operator(op: &ast::JoinOperator) -> bool {