Function extract_column_name

nodedb-sql/src/planner/select/helpers.rs:127–151

(expr: &ast::Expr)

}

pub(super) fn extract_column_name(expr: &ast::Expr) -> Result<String> {
    match expr {
        ast::Expr::Identifier(ident) => Ok(normalize_ident(ident)),
        ast::Expr::CompoundIdentifier(parts) if parts.len() >= 3 => {
            let qualified: String = parts
                .iter()
                .map(normalize_ident)
                .collect::<Vec<_>>()
                .join(".");
            Err(SqlError::Unsupported {
                detail: format!(
                    "schema-qualified column reference '{qualified}': {SCHEMA_QUALIFIED_MSG}"
                ),
            })
        }
        ast::Expr::CompoundIdentifier(parts) => Ok(parts
            .iter()
            .map(normalize_ident)
            .collect::<Vec<_>>()
            .join(".")),
        _ => Err(SqlError::Unsupported {
            detail: format!("expected column name, got: {expr}"),
        }),
    }
}

pub fn extract_string_literal(expr: &ast::Expr) -> Result<String> {
    match expr {