Struct TableScope 

pub struct TableScope {
    pub tables: HashMap<String, ResolvedTable>,
    /* private fields */
}

Context built during FROM clause resolution.

Fields

tables: HashMap<String, ResolvedTable>

Tables by reference name (alias or table name).

Implementations

impl TableScope

pub fn new() -> Self

pub fn add(&mut self, table: ResolvedTable) -> Result<()>

Add a resolved table. Returns error if name conflicts.

pub fn resolve_column( &self, table_ref: Option<&str>, column: &str, ) -> Result<(String, String)>

Resolve a column name, optionally qualified with a table reference.

For schemaless collections, any column is accepted (dynamic fields). For typed collections, the column must exist in the schema.

pub fn single_table(&self) -> Option<&ResolvedTable>

Get the single table in scope (for single-table queries).

pub fn resolve_from( catalog: &dyn SqlCatalog, from: &[TableWithJoins], ) -> Result<Self>

Resolve tables from a FROM clause.

Trait Implementations

impl Debug for TableScope

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

Formats the value using the given formatter.

impl Default for TableScope

fn default() -> TableScope

Returns the “default value” for a type.