Method resolve_using_column

src/sql/src/plan/scope.rs:411–429

Resolves a column name in a `USING` clause.

(
        &self,
        column_name: &ColumnName,
        join_side: JoinSide,
        name_manager: &mut NameManager,
    )

    /// Resolves a column name in a `USING` clause.
    pub fn resolve_using_column(
        &self,
        column_name: &ColumnName,
        join_side: JoinSide,
        name_manager: &mut NameManager,
    ) -> Result<(ColumnRef, Arc<str>), PlanError> {
        self.resolve_column(&[], column_name, name_manager)
            .map_err(|e| match e {
                // Attach a bit more context to unknown and ambiguous column
                // errors to match PostgreSQL.
                PlanError::AmbiguousColumn(column) => {
                    PlanError::AmbiguousColumnInUsingClause { column, join_side }
                }
                PlanError::UnknownColumn { column, .. } => {
                    PlanError::UnknownColumnInUsingClause { column, join_side }
                }
                _ => e,
            })
    }

    /// Resolves a named column reference in a given scope.
    /// Returns the interned name for tracking purposes.