// SPDX-License-Identifier: BUSL-1.1
//! Parsed request struct shared by `CREATE COLLECTION` and `CREATE TABLE`.
/// Pre-parsed fields from the `nodedb-sql` AST for a `CREATE COLLECTION` /
/// `CREATE TABLE` statement.
///
/// - `engine`: value of `engine=` from the WITH clause (lowercased),
/// or `None` for the default.
/// - `columns`: `(name, type)` pairs from the parenthesised column list.
/// - `options`: remaining WITH clause `key=value` pairs (excluding `engine`).
/// - `flags`: free-standing modifier keywords: `APPEND_ONLY`,
/// `HASH_CHAIN`, `BITEMPORAL`.
/// - `balanced_raw`: raw inner content of `BALANCED ON (...)`, if present.