DuckDB offers two handy functions for generating sequences of numbers: range() and generate_series(). While they both do the same thing, and share basically the same syntax, there is one important difference between them.
The primary difference between them is in their inclusivity behavior with regard to the stop value.
The range() function is a handy utility in DuckDB that enables us to generate sequences of numbers or timestamps. We specify the starting point, the end point, and the step to use for each value in the range.
In this article, we’ll take a look at DuckDB’s range() function, along with some basic examples.
In DuckDB, the generate_series() function is a powerful tool for generating sequences of values, which can be very useful for data analysis, testing, and creating sample datasets. This function enables us to easily create series of numbers, dates, and timestamps with minimal code.
In SQL Server, we can use the ISNUMERIC() function to return numeric values from a column.
We can alternatively run a separate query to return all values that contain numeric data.
There may be occasions where you need to check a column for non-numeric values. For example, you discover that a column is a varchar column when it really should be a numeric column.
This is easily done in SQL Server with the ISNUMERIC() function.
In MySQL, the FORMAT() function returns a number formatted to a specified number of decimal places.
It includes group separators and a decimal separator where applicable.
MariaDB has a FLOOR() function and a TRUNCATE() function that can return the same results or different results, depending on the exact value of their arguments.
Below is a quick rundown on the difference between FLOOR() and TRUNCATE() in MariaDB.
MariaDB has a ROUND() function and a TRUNCATE() function that can return the same results or different results, depending on the exact value of their arguments.
As the function names suggest, ROUND() rounds the number and TRUNCATE() truncates the number. Truncating a number simply cuts it off without performing any rounding.
Below is a quick rundown on the difference between ROUND() and TRUNCATE() in MariaDB.
In Oracle Database, the TO_CHAR(number) function converts a number to a VARCHAR2 value in the format specified by the format argument.