In DuckDB, avg() is an aggregate function that returns the average of all non-NULL values in its argument (usually a column).
In this article we’ll take a quick look at this function, along with some basic examples.
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Understanding Type Affinity in SQLite
SQLite is a lightweight, self-contained database engine renowned for its simplicity and flexibility. One of its unique features is the way it handles data types through type affinity, which determines how SQLite associates values with storage classes.
Unlike many database systems that enforce strict type constraints, SQLite’s type affinity system is more flexible, accommodating a broader range of data.
An Overview of ARG_MIN() in DuckDB
In DuckDB, arg_min() is an aggregate function that finds the row with the minimum value in one column and returns the corresponding value from another column at that row. Rows where either of the first two expressions is NULL are ignored.
In this article we explore DuckDB’s arg_min() function with some simple examples.
Exploring the ARG_MAX() Function in DuckDB
In DuckDB, arg_max() is an aggregate function that finds the row with the maximum value in one column and returns the corresponding value from another column at that row. Rows where either of the first two arguments is NULL are ignored.
Let’s take a look at the arg_max() with some straightforward examples.
Understanding the POW() Function in SQLite
In SQLite, the pow() function calculates the result of raising one number to the power of another. In other words, it performs an exponentiation operation.
The pow() function is particularly useful for mathematical operations where powers or exponents are required.
It’s also available as power(). Both syntaxes do the same thing.
How CONCAT_WS() Works in DuckDB
In DuckDB, the CONCAT_WS() function provides an efficient way to join strings with a specified separator. CONCAT_WS() stands for “concatenate with separator”, and many RDBMSs have such a function.
CONCAT_WS() is particularly useful when you need to combine multiple fields or values with a consistent delimiter.
Let’s explore its features and practical applications.
An Overview of the CONCAT() Function in DuckDB
String concatenation is a common operation in database queries, and many database management systems (DBMSs) provide at least one or two ways to concatenate strings. DuckDB is no exception.
One option for concatenating strings in DuckDB is with the CONCAT() function. This function provides a robust and NULL-safe way to combine strings.
Unlike the concatenation operator (||), CONCAT() handles NULL values gracefully and provides a cleaner syntax for combining multiple strings.
In this article, we’ll explore everything from basic usage to advanced techniques and best practices.
Exploring the ANY_VALUE() Function in DuckDB
DuckDB is a fast and reliable analytical database that offers a bunch of aggregate functions. One such function is ANY_VALUE().
In this post, we’ll explore the ANY_VALUE() function, along with examples to demonstrate its usage.
Understanding SQLite’s FLOOR() Function
The FLOOR() function in SQLite returns the largest integer value that is less than or equal to a given numeric expression. Essentially, it “rounds down” a decimal number to the nearest integer below it.
This function is useful in cases where you want to discard the decimal portion of a number without rounding up.
Understanding SQLite’s CAST() Expression
SQLite is a widely-used lightweight database engine that powers many mobile, embedded, and desktop applications. One of its key features is its dynamic type system, which allows flexibility in handling data. While this is advantageous in many scenarios, there are cases where developers need precise control over how data is treated or converted between types. This is where SQLite’s CAST() expression comes in.