Expand `TABLE` command support

#704 added support for the `CREATE TABLE x AS TABLE y` by adding basic support for the `TABLE` command within the context of a `CREATE` statement. However, as noted in the [Postgres docs](https://www.postgresql.org/docs/current/sql-select.html#SQL-TABLE):

"It can be used as a top-level command or as a space-saving syntax variant in parts of complex queries. Only the WITH, UNION, INTERSECT, EXCEPT, ORDER BY, LIMIT, OFFSET, FETCH and FOR locking clauses can be used with TABLE; the WHERE clause and any form of aggregation cannot be used."

These other cases have yet to be investigated.

结合 PostgreSQL 的 TABLE 文档，审查 #704 引入的现有 TABLE 支持。确定顶层和允许的子句中仍不受支持的情况；完成意味着预期的情况都能被一致地解析，并由 repository 的测试覆盖。

由索引模型根据 Issue 内容生成。