Example 3: Getting Month Name From Current Date To get the month name from the current date, the CURRENT_DATE function and “Month” are passed as arguments to the TO_CHAR() function: SELECTTO_CHAR(CURRENT_DATE,'Month')AScurrent_month_name; The stated function succeeded in getting the mon...
SELECT DATENAME(MONTH, GETDATE()); 这将返回当前月份的名称,如"March"。 DATEPART()函数:用于返回日期的指定部分的数值。例如,获取当前年份: SELECT DATEPART(YEAR, GETDATE()); 这将返回当前的年份,如2023。 三、GETDATE()在不同数据库中的等效函数 不同的数据库管理系统有不同的获取当前日期和时间的函数,...
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我编译了这些代码,但是这段代码发生在java.sql.SQLException ()方法上,java.text.ParseException出现在resultSet.getDate()方法中。// here occurs exception ↓ :( Date date =resultSet.getDate("date");Exception in thread "main" java.sql.SQLException: Erro 浏览1提问于2016-12-20得票数2 3回答 NullPoi...
PostgreSQL 9.6: SELECT * FROM pg_stat_activity WHERE wait_event IS NOT NULL; PostgreSQL 10 and later (?): SELECT * FROM pg_stat_activity WHERE wait_event IS NOT NULL AND backend_type = 'client backend'; The results of this query will show any connections currently waiting on another con...
我希望从一年中指定的季节中选择按年份分组的值。季节如下:十二月(前年),一月,二月:,三月,四月,五月:Spring,六月,七月,八月:夏季,九月,十月,十一月:select avg(value) from table where month(date) betwee 浏览0提问于2018-02-16得票数 2 回答已采纳 ...
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In SQL Server, we can use theDATENAME()function to extract specific parts of a date i.e. the year, month, or day. Let’s use thestart_datecolumn of thefacultytable in this case: SELECT DATENAME(weekday, start_date) AS day_of_week, ...
EXTRACT('EPOCH' FROM INTERVAL '1 Month 2 Days'); That’s all from this post. Conclusion To get the Unix Timestamp in PostgreSQL, the EXTRACT() and DATE_PART() functions are used with the EPOCH argument. Using these functions, a user can get a Unix timestamp from a date, interval, ...