If you’re new to relational databases, and you’re trying to get your head around this concept of a “relationship” in your database, I hope this article helps.
Get the Day of the Year from a Date in SQL Server (T-SQL)
TSQL provides the DATEPART() function, which enables us to return the day of the year for a given date in SQL Server.
By “day of the year”, I mean the day number of the given year.
Difference Between TRIM() and TRIM_ORACLE() in MariaDB
MariaDB has a TRIM() function and a TRIM_ORACLE() function. Both functions do essentially the same thing. But there is a minor difference.
4 Functions that Extract Microseconds from a Time Value in MariaDB
Below are 4 functions that enable you to return the microseconds part from a time value in MariaDB.
$strLenBytes vs $strLenCP in MongoDB: What’s the Difference?
MongoDB includes the $strLenBytes and $strLenCP operators in its aggregation pipeline framework. These operators do a similar but slightly different thing. In some cases, both will return exactly the same result, while in other cases the results will differ.
Here’s a quick overview of the difference between these two operators.
How SLEEP() Works in MariaDB
In MariaDB, SLEEP() is a built-in function that sleeps (pauses) for the number of seconds specified by its argument.
If uninterrupted, it returns 0, if interrupted, it returns 1.
3 Ways to Get the Day Name from a Date in MariaDB
Below are three approaches you can use to get the day name from a date in MariaDB.
Two of these approaches return the full day name, and one returns the short day name.
Fix: “Unknown table ‘locales’ in information_schema” in MariaDB
If you get the Unknown table 'locales' in information_schema error in MariaDB, it’s probably because you haven’t installed the LOCALES plugin yet.
You need to install the LOCALES plugin before you try to query this table.
How OCT() Works in MariaDB
In MariaDB, OCT() is a built-in function that returns a string representation of the octal value of its argument.
11 Functions to Get the Day, Month, and Year from a Date in MariaDB
MariaDB includes many functions for working with dates. Some of these extract certain parts from such dates and return them as a string or integer.
Below are 11 functions that you can use to return various date parts in MariaDB.