SELECT id, date_today, start_date, datediff(date_today, start_date) AS date_diff FROM date_table 1. 2. 3. 4. 5. 6. 7. 8. 9. ### 步骤四:执行SQL语句 最后,我们需要执行上述SQL语句,得到日期相减的结果。下面是执行SQL语句的代码: ```markdown ```sql hive -e "SELECT id, date_today...
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