【代码报错】INTERNAL Error: Comparison on NULL values

由bqp8687s创建，最终由small_q更新于2024-10-28 08:44 被浏览 12 用户

突破历史新高

请问老师这个代码要如何实现

import dai
sql = """
WITH ranked_data AS (
SELECT
instrument,
name,
max(high) AS old_high
FROM
cn_stock_prefactors
WHERE
suspended == 0
AND
list_sector !=4
AND
date < '{sd}'
GROUP BY
instrument,name
)
SELECT
a.date,
a.instrument,
a.name,
b.old_high,
a.close,
a.sw2021_level2_name
FROM
cn_stock_prefactors a
JOIN
ranked_data b ON a.instrument = b.instrument
WHERE
a.close > b.old_high
"""
sd = '2000-01-01'
ed = '2024-10-28'
df = dai.query(sql,filters={'date':[sd,ed]}).df()
print(df)
报错
InvalidInputException: Invalid Input Error: Attempting to execute an unsuccessful or closed pending query result Error: INTERNAL Error: Comparison on NULL values This error signals an assertion failure within BigDB. This usually occurs due to unexpected conditions or errors in the program's logic.
high >= m_max(high,10) 这条件就是突破10日新高呀，你想怎么写，因子可以描述下逻辑
我想构建一个突破历史最高价的因子。
if(high>= m_max(high,10),1,0) 这不就是一个非0即1的类型因子咩
上午想了一下逻辑，我尝试用突破几日高点试试，本来想设计一个历史最高价，就是从上市以来的最高价，来做筹码释放判断