did sql ast restore sql supported?

like
`
AST: [Query(Query { ctes: [], body: Select(Select { distinct: false, projection: [UnnamedExpr(Identifier("a")), UnnamedExpr(Identifier("b")), UnnamedExpr(Value(Long(123))), UnnamedExpr(Function(Function { name: ObjectName(["myfunc"]), args: [Identifier("b")], over: None, distinct: false }))], from: [TableWithJoins { relation: Table { name: ObjectName(["table_1"]), alias: None, args: [], with_hints: [] }, joins: [] }], selection: Some(BinaryOp { left: BinaryOp { left: Identifier("a"), op: Gt, right: Identifier("b") }, op: And, right: BinaryOp { left: Identifier("b"), op: Lt, right: Value(Long(100)) } }), group_by: [], having: None }), order_by: [OrderByExpr { expr: Identifier("a"), asc: Some(false) }, OrderByExpr { expr: Identifier("b"), asc: None }], limit: None, offset: None, fetch: None })]

`

restore to
`
SELECT a, b, 123, myfunc(b) \
FROM table_1 \
WHERE a > b AND b < 100 \
ORDER BY a DESC, b"
`

issue 中没有指定文件、测试或入口点。首先定位 AST-to-SQL 恢复功能，然后使用提供的 AST 和预期的 SELECT 输出作为验收用例，包括其中的 WHERE 和 ORDER BY 子句。

由索引模型根据 Issue 内容生成。