Function scan_for_relation

nodedb-sql/src/planner/join/plan.rs:173–200

Build a `SqlPlan::Scan` for a named-table TableFactor.

(rel: &ast::TableFactor, scope: &TableScope)

/// Build a `SqlPlan::Scan` for a named-table TableFactor.
fn scan_for_relation(rel: &ast::TableFactor, scope: &TableScope) -> Result<SqlPlan> {
    let (rel_name, rel_alias) =
        crate::parser::normalize::table_name_from_factor(rel)?.ok_or_else(|| {
            SqlError::Unsupported {
                detail: "non-table JOIN target".into(),
            }
        })?;
    let table = scope
        .tables
        .values()
        .find(|t| t.name == rel_name || t.alias.as_deref() == Some(&rel_name))
        .ok_or_else(|| SqlError::UnknownTable {
            name: rel_name.clone(),
        })?;
    Ok(SqlPlan::Scan {
        collection: table.name.clone(),
        alias: rel_alias.or_else(|| table.alias.clone()),
        engine: table.info.engine,
        filters: Vec::new(),
        projection: Vec::new(),
        sort_keys: Vec::new(),
        limit: None,
        offset: 0,
        distinct: false,
        window_functions: Vec::new(),
        temporal: crate::temporal::TemporalScope::default(),
    })
}