Struct BindContext 

pub struct BindContext {
    pub columns: Vec<ColumnBinding>,
    pub indices_of: HashMap<String, Vec<usize>>,
    pub range_of: HashMap<String, (usize, usize)>,
    pub clause: Option<Clause>,
    pub column_group_context: ColumnGroupContext,
    pub cte_to_relation: HashMap<String, Rc<RefCell<BindingCte>>>,
    pub lambda_args: Option<HashMap<String, (usize, DataType)>>,
    pub disable_security_invoker: bool,
    pub named_windows: HashMap<String, WindowSpec>,
    pub sql_udf_arguments: Option<HashMap<String, ExprImpl>>,
}

Fields

columns: Vec<ColumnBinding>

indices_of: HashMap<String, Vec<usize>>

range_of: HashMap<String, (usize, usize)>

clause: Option<Clause>

column_group_context: ColumnGroupContext

cte_to_relation: HashMap<String, Rc<RefCell<BindingCte>>>

Map the cte’s name to its binding state. The ShareId in BindingCte of the value is used to help the planner identify the share plan.

lambda_args: Option<HashMap<String, (usize, DataType)>>

Current lambda functions’s arguments

disable_security_invoker: bool

Whether the security invoker is set, currently only used for views.

named_windows: HashMap<String, WindowSpec>

Named window definitions from the WINDOW clause

sql_udf_arguments: Option<HashMap<String, ExprImpl>>

Bound arguments for the current SQL UDF, if any.

Implementations

impl BindContext

pub fn get_column_binding_index( &self, table_name: &Option<String>, column_name: &String, ) -> Result<usize, ErrorCode>

pub fn get_column_binding_indices( &self, table_name: &Option<String>, column_name: &String, ) -> Result<Vec<usize>, ErrorCode>

If return Vec has len > 1, it means we have an unqualified reference to a column which has been naturally joined upon, wherein none of the columns are min-nullable. This will be handled in downstream as a COALESCE expression

fn get_indices_with_group_id( &self, group_id: u32, column_name: &String, ) -> Result<Vec<usize>, ErrorCode>

pub fn get_unqualified_indices( &self, column_name: &String, ) -> Result<Vec<usize>, ErrorCode>

pub fn add_natural_columns( &mut self, left: usize, right: usize, non_nullable_column: Option<usize>, )

Identifies two columns as being in the same group. Additionally, possibly provides one of the columns as being non_nullable

fn get_index_with_table_name( &self, column_name: &String, table_name: &String, ) -> Result<usize, ErrorCode>

pub fn merge_context(&mut self, other: Self) -> Result<()>

Merges two BindContexts which are adjacent. For instance, the BindContext of two adjacent cross-joined tables.

impl BindContext

pub fn new() -> Self

Trait Implementations

impl Clone for BindContext

fn clone(&self) -> BindContext

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for BindContext

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for BindContext

fn default() -> BindContext

Returns the “default value” for a type.