如何优化下面的SQL查询？这需要太多时间。这用于从非常大的天文表（几亿个对象）中进行选择，并且此查询运行超过12小时，这超过了最大允许查询时间。似乎通过附加条件添加更多限制根本没有帮助。
非常感谢您的帮助！
root
|-- Insdc: string (nullable = true)
|-- LastMetaUpdate: string (nullable = true)
|-- LastUpdate: string (nullable = true)
|-- Published: string (nullable = true)
|-- Received: string (nullable = true)
|-- ReplacedBy: string (nullable = true)
|-- Status: string (nullable = true)
|-- Type: string (nullable = true)
|-- accession: string (nullable = true)
|-- alias: string (nullable = true)
|-- attributes: array (nullable = true)
| |-- element: struct (containsNull = true)
| | |-- tag: string (nullable = true)
| | |-- value: string (nullable = true)
|-- center_name: string (nullable = true)
|-- design_description: string (nullable = true)
|-- geo_accession: string (nullable = true)
|-- instrument_model: string (nullable = true)
|-- library_construction_protocol: string (nullable = true)
|-- library_name: string (nullable = true)
|-- library_selection: string (nullable = true)
|-- library_source: string (nullable = true)
|-- library_strategy: string (nullable = true)
|-- paired: boolean (nullable = true)
|-- platform: string (nullable = true)
|-- read_spec: array (nullable = true)
| |-- element: struct (containsNull = true)
| | |-- base_coord: long (nullable = true)
| | |-- read_class: string (nullable = true)
| | |-- read_index: long (nullable = true)
| | |-- read_type: string (nullable = true)
|-- sample_accession: string (nullable = true)
|-- spot_length: long (nullable = true)
|-- study_accession: string (nullable = true)
|-- tags: array (nullable = true)
| |-- element: string (containsNull = true)
|-- title: string (nullable = true)
|-- accession: string (nullable = true)
|-- study: struct (nullable = true)
| |-- BioProject: string (nullable = true)
| |-- Insdc: string (nullable = true)
| |-- LastMetaUpdate: string (nullable = true)
| |-- LastUpdate: string (nullable = true)
| |-- Published: string (nullable = true)
| |-- Received: string (nullable = true)
| |-- ReplacedBy: string (nullable = true)
| |-- Status: string (nullable = true)
| |-- Type: string (nullable = true)
| |-- abstract: string (nullable = true)
| |-- accession: string (nullable = true)
| |-- alias: string (nullable = true)
| |-- attributes: array (nullable = true)
| | |-- element: struct (containsNull = true)
| | | |-- tag: string (nullable = true)
| | | |-- value: string (nullable = true)
| |-- dbGaP: string (nullable = true)
| |-- description: string (nullable = true)
| |-- external_id: struct (nullable = true)
| | |-- id: string (nullable = true)
| | |-- namespace: string (nullable = true)
| |-- submitter_id: struct (nullable = true)
| | |-- id: string (nullable = true)
| | |-- namespace: string (nullable = true)
| |-- tags: array (nullable = true)
| | |-- element: string (containsNull = true)
| |-- title: string (nullable = true)