SQL---Date and Time Functions(日期函数) 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...
In this section, you can find information about the date and time scalar functions that Amazon Redshift supports. Topics Summary of date and time functions Date and time functions in transactions Deprecated leader node-only functions + (Concatenation) operator ADD_MONTHS function AT TIME ZONE functi...
In this example, we add one month and two days to date values in a column named Day of Created At: DATE("Day of Created At",'+1 months','+2 days') Built-in date and time functions Custom formulas have built-in functions that you can also use to modify dates and times. Some of...
DATE_FORMAT() Takes date-time input and returns date in a user defined format. HOUR() Extracts the hour from time DAY() Extracts the day from date SQL Server date and time functions FunctionDescription GETDATE() Returns the current date and time DATEPART() Returns part of the date DATEDIFF...
or SMALLDATETIME data type. Of course, you have the alternative of storing date values as strings, as in '1/1/2003'. Another alternative is to use the DATETIME data type and then use one of the date and time functions to retrieve only the needed portion (date or time) from the table...
The following built-in functions relate to dates and time. Topics 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 e...
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 ...
This section describes the functions that can be used to manipulate temporal values. See Section 13.2, “Date and Time Data Types”, for a description of the range of values each date and time type has and the valid formats in which values may be specified. Table...
DATE and TIME values in PostgreSQL have a whole special set of functions and operators for their proper use. So many queries deal with DATE and TIME information that it’s important to get to know the date tools. Below we’ll cover and practice the main functions you’ll likely need. If...
See Section 11.2, “Date and Time Data Types”, for a description of the range of values each date and time type has and the valid formats in which values may be specified. Table 12.11 Date and Time Functions NameDescription ADDDATE() Add time values (intervals) to a date value ...