Last week I was working on a Power BI custom data connector for a customer and I came across a problem that has been bothering me for a while. The “Invoke Custom Function” button is a very powerful ...

parser_tools is a DuckDB extension designed to provide SQL parsing capabilities within the database. It allows you to analyze SQL queries and extract structural information directly in SQL. This ...

A user-defined function is a mechanism with which you can write your own extensions to SQL. The built-in functions supplied with DB2 are a useful set of functions, but they may not satisfy all of your ...

Given a function invocation, the database manager must decide which of the possible functions with the same name is the "best" fit. This includes resolving functions from the built-in and user-defined ...

[This post was originally published on the official Power Query blog, which has now been taken down. I’m republishing all my posts there to this blog to ensure the content remains available.] Query ...

SQL Window functions are an advanced type of function in SQL. In this post, you will learn about what SQL window functions are and how they can be used or work. What are SQL window functions? SQL ...