通过UNIX_TIMESTAMP组的日期我有一个GROUP BY子句中我的查询: SELECT * FROM currency_data
WHERE currency = 'GBP'
GROUP BY UNIX_TIMESTAMP(date) DIV (1440 * 60)
ORDER BY date ASC
这工作对大多数的记录,但我有一些记录带有日期1970年<因此,通过组忽略这些记
我有orders_df: Symbol Order Shares
Date
2011-01-10 AAPL BUY 1500
2011-01-13 AAPL SELL 1500
2011-01-13 IBM BUY 4000
2011-01-26 GOOG BUY 1000
2011-02-02 XOM SELL 4000
2011-02-10 XOM BUY 4000