In Oracle Database, the SYSDATE function returns the current date and time set for the operating system on which the database server resides.
The returned value is of type DATE.
date functions
EXTRACT (datetime) Function in Oracle
In Oracle Database, the EXTRACT(datetime) function extracts and returns the value of a specified datetime field from a datetime or interval expression.
Change the Time Zone Offset on a datetimeoffset Value in SQL Server (T-SQL)
You can use the SWITCHOFFSET() function in SQL Server to change the time zone offset on a datetimeoffset value.
The function accepts two arguments; a datetimeoffset(n) value (or an expression that can be resolved to a datetimeoffset(n) value), and the new time zone.
MariaDB Date & Time Functions (Full List)
This article contains a full list of built-in MariaDB date and time functions.
How SQRT() Works in MariaDB
In MariaDB, ASIN() is a built-in numeric function that returns the square root of its argument.
How ADD_MONTHS() Works in MariaDB
In MariaDB, ADD_MONTHS() is a built-in date and time function that adds a given number of months to a date, and returns the result.
The date can be a date, datetime, or timestamp value.
This function was introduced in MariaDB 10.6.1 to enhance Oracle compatibility. There are at least 6 other ways to add months to a date in MariaDB.
How UTC_TIMESTAMP() Works in MariaDB
In MariaDB, UTC_TIMESTAMP() is a built-in date and time function that returns the current UTC date and time.
The result is returned in ‘YYYY-MM-DD HH:MM:SS’ or YYYYMMDDHHMMSS.uuuuuu format, depending on whether the function is used in a string or numeric context.
UTC stands for Coordinated Universal Time, and is the world standard for regulating time.
How UTC_TIME() Works in MariaDB
In MariaDB, UTC_TIME() is a built-in date and time function that returns the current UTC time.
The result is returned in ‘HH:MM:SS’ or HHMMSS.uuuuuu format, depending on whether the function is used in a string or numeric context.
UTC stands for Coordinated Universal Time, and is the world standard for regulating time.
How UTC_DATE() Works in MariaDB
In MariaDB, UTC_DATE() is a built-in date and time function that returns the current UTC date.
The result is returned in ‘YYYY-MM-DD’ or YYYYMMDD format, depending on whether the function is used in a string or numeric context.
UTC stands for Coordinated Universal Time, and is the world standard for regulating time.
How UNIX_TIMESTAMP() Works in MariaDB
In MariaDB, UNIX_TIMESTAMP() is a built-in date and time function that returns a Unix timestamp, based on its argument (or lack of argument).
It works like this:
- When called without an argument, it returns a Unix timestamp (seconds since ‘1970-01-01 00:00:00’ UTC) as an unsigned integer.
- When called with an argument, it returns the value of the argument as seconds since ‘1970-01-01 00:00:00’ UTC.
The inverse function of UNIX_TIMESTAMP() is FROM_UNIXTIME().