Date time functions 默认数据格式为yyyy-MM-dd格式 DataFrame数据 val df = Seq( ("A", "2019-01-10", "2019-05-02"), ("B", "2019-01-01", "2019-02-04"), ("D", "2019-01-09", "2019-03-02")) .toDF("user_id", "start_time", "end_time") 1. def add_months(startDate: ...
1、DATE_ADD(date,INTERVAL expr type) 向日期添加指定的时间间隔; date: 参数是合法的日期表达式 expr: 参数是您希望添加的时间间隔 type:时间单位 2、TIMESTAMPDIFF(unit,time1,time2) 返回指定时间单位的 时间差 unit:单位 time1:时间1 time2:时间2 3、DATEDIFF(time1,time2) 返回2个时间的间隔天数 4、...
date 可以是一个 DATE 字符串、一个 DATETIME字符串、一个 TIMESTAMP或一个当地时间的YYMMDD或YYYMMDD格式的数字。 例如: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 SELECTUNIX_TIMESTAMP();(执行时的时间:2009-08-0610:10:40) #1249524739SELECTUNIX_TIMESTAMP('2009-08-06');#1249488000 from_un...
Using date-time functions in JMP queries is complicated by the fact that the SQL engine that handles JMP queries (SQLite) uses different formats for storing dates than JMP does. SQLite stores date-times as strings. However, JMP stores date-times as the number of seconds since January 1, 190...
The following sections in this topic provide an overview of all Transact-SQL date and time data types and functions. For information and examples that are common to date and time data types and functions, see Using Date and Time Data. Date and Time Data Types Date and Time Functions ...
What are date and time functions? Why use date and time functions? How to get the current date and time in SQL What is a time series database? Conclusion Stop flying blind Be the first to get the latest tutorials, trainings, and all things InfluxDB, Telegraf, and more—right in your ...
Time Zones Datetime Conversion Functions Date, Timestamp, and Interval Operators Date and Time Patterns CURRENT_DATE CURRENT_ROW_TIMESTAMP CURRENT_TIME CURRENT_TIMESTAMP EXTRACT LOCALTIME LOCALTIMESTAMP TSDIFF Of these, the SQL extension CURRENT_ROW_TIMESTAMP is the most useful for a streaming ...
1. NOW( ), CURTIME, SQL TIME Function with its Synonyms 2. GETDATE(), SYSDATETIME() Time Functions with Synonyms in MS SQL Server 3. HOUR(), MINUTE() and SECOND() Time Functions in MySQL and SQL 4. How to get Time, Hour, Minute, Second, and Millisecond in SQL Server ...
Commonly Used Date Functions GETDATE() This function is used to get the current date and time. For example, SELECTGETDATE(); Here, the function returns the current date and time. CURRENT_TIMESTAMP This function is used to get the current timestamp in the system. For example, ...
Date and time data types Date and time functions Functions that return system date and time values Functions that return date and time parts Functions that return date and time values from their parts Functions that return date and time difference values Functions that modify date and time values...