If you want to use named time zones in MariaDB, you’ll need to make sure they’ve been configured.
By “named time zones”, I mean being able to use strings like America/Los_Angeles instead of −08:00 or −07:00 when specifying the time zone. For example, when using the CONVERT_TZ() function.
Here’s how to configure named time zones in MariaDB.
If you have documents that store dates as Date objects, but you want to return them in a different format, you can use the $dateToString aggregate pipeline operator.
For example, you might want a date to be returned in mm/dd/yyyy format instead of the long ISODate() format that includes minutes, seconds, milliseconds, etc
The $dateToString operator converts the Date object to a string, and optionally allows you to specify a format for the resulting output.
MariaDB provides several ways to add a certain number of days to a given date. For example, you might want to add 10 days to a date, or 30 days, or even just 1 day. Fortunately, MariaDB makes this easy.
Here are 8 ways to add a number of days to a given date in MariaDB.
Below is a full list of the date and time units that can be used in MariaDB.
You can use the T-SQL code below to convert a month number to its corresponding name in SQL Server.
This is for times where you don’t actually have the full date – when all you have is the month number. If you do have the date, then here’s how to get the month name from a date.
In SQL Server, you can use the FORMAT() function to return the short day name from a date. FORMAT() is a T-SQL function that enables you to format dates and numbers to a specified format.
This function returns its result as a string. Specifically, it returns it as either a nvarchar or null as the case may be.
Here are three T-SQL functions that you can use to extract the month from a date in SQL Server.
You can use the T-SQL function DATEPART() to return the week number from a date in SQL Server.
By “week number” I mean the week’s number within the year of the specified date.
If you need to extract the ISO week number from a date in SQL Server, you can use the iso_week argument when calling the DATEPART() function. You can alternatively use the isowk or isoww arguments to do the same thing.
By “ISO week”, I’m referring to the ISO 8601 date and time standard.
Whenever you connect to SQL Server, a bunch of default settings are applied to your session. These include the language and the date format settings.
The date format is normally determined by your default language. For example, if your default language is us_english, then the default date format will probably be mdy, and the first day of the week will be day 7 (Sunday).
If you change your language, you the date format will implicitly be updated accordingly.
However, you still have the option of changing the date format without changing the language. To do this, you can use SET DATEFORMAT.