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.
Continue readingWhenever 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.
The AT TIME ZONE clause was introduced in SQL Server 2016 to convert a date into a datetimeoffset value in a target time zone.
This function is similar to some other T-SQL functions, such as SWITCHOFFSET() and TODATETIMEOFFSET(), however, the AT TIME ZONE clause allows/(requires) you to specify the time zone offset by name, instead of an actual offset value.
This article explores how AT TIME ZONE works, and explains its benefits when compared to the other functions mentioned.
Microsoft introduced the CURRENT_TIMEZONE() function in SQL Server 2019 for returning the time zone of the server.
More specifically, this function “returns the name of the time zone observed by a server or an instance”.
Continue readingThis article presents 5 ways to return the milliseconds portion from a Date object in MongoDB.
Continue readingThis article presents 5 ways to return the seconds portion from a Date object in MongoDB.
Continue readingThis article presents 5 ways to return the minutes portion from a Date object in MongoDB.
Continue readingMongoDB provides a good range of aggregation pipeline operators for working with dates, including operators that extract certain parts of dates, such as the year, month, day, hours, minutes, etc.
There are also a couple of MongoDB methods that enable you to iterate through a cursor, and apply a JavaScript function. You can therefore use JavaScript to extract date values and date parts, etc from a field as required.
This article presents 5 ways to return the hour portion from a Date object in MongoDB.
Continue readingIf you’ve ever queried the sysjobhistory table in the msdb database, you’ll probably know that the datetime and duration columns are stored as integers.
In particular, when you query this table, the run_date, run_time, and duration columns are returned as integers, which can make it difficult to read.
Below is a query you can use to return this data in an easier to read format.
Continue readingMongoDB provides various options for extracting date parts from a date.
This article presents 3 ways to return the week portion from a date in MongoDB.
Continue reading