Qihang Zhang
1f8c553078
✨ **feat**(data_downloader.py): 新增`perform_full_update`与`perform_incremental_update`函数以支持全量与增量更新 ♻️ **style**(data_downloader.py): 添加完整函数文档与空值处理，提升代码可读性与容错性
17 lines
945 B
SQL
17 lines
945 B
SQL
-- 更新股票元数据信息
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UPDATE stock_metadata
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SET
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last_full_update = NOW(),
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data_start_date = CASE WHEN '{data_start_date}' = 'NULL' THEN NULL ELSE '{data_start_date}' END,
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data_end_date = CASE WHEN '{data_end_date}' = 'NULL' THEN NULL ELSE '{data_end_date}' END,
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record_count = {record_count},
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status = CASE
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WHEN {record_count} > 0 THEN 1 -- 有数据，状态为正常
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ELSE 2 -- 无数据，状态为异常
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END,
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latest_price = CASE WHEN '{latest_price}' = 'NULL' THEN NULL ELSE {latest_price} END,
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latest_date = CASE WHEN '{data_end_date}' = 'NULL' THEN NULL ELSE '{data_end_date}' END,
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latest_pe_ttm = CASE WHEN '{latest_pe_ttm}' = 'NULL' THEN NULL ELSE {latest_pe_ttm} END,
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latest_pb = CASE WHEN '{latest_pb}' = 'NULL' THEN NULL ELSE {latest_pb} END,
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latest_total_mv = CASE WHEN '{latest_total_mv}' = 'NULL' THEN NULL ELSE {latest_total_mv} END
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WHERE ts_code = '{ts_code}' |