VIEW.DESCRIBERead a view declaration back: the composition tree, order, mode, hydration template, and the VIEW.CREATE that recreates it.
| 语法 | VIEW.DESCRIBE name |
| 分组 | view |
| 参数个数 | 2 |
| 起始版本 | 6.5.0 |
| 标志 | readonly, extension |
| 复杂度 | O(declaration size) at the origin — the catalog is process-global |
| Redis 兼容性 | kevy-only: nearest is SHOW CREATE VIEW |