Learn how a single JavaScript Date() timezone mistake silently corrupts web apps and how to fix timestamp bugs in JS, Python, ...

DAX user-defined functions are currently in preview. Data Analysis Expressions (DAX) user-defined functions (UDFs) let you package reusable, parameterized DAX logic into your models making your DAX ...

Abstract: Queries containing user-defined functions (UDFs) are widely used, since they allow queries to be written using a mix of imperative language constructs and SQL, thereby increasing the ...

Abstract: With the continuous evolution of database technology, numerous databases and query analysis engines have begun to incorporate user-defined functions into SQL. These functions enable users to ...

JavaScript user-defined functions support stateless, compute-only scalar functions that do not require external connectivity. The return value of a function can only ...

The three most common open source technologies for writing data science programs are Python, SciLab, and R. Here's how to write program-defined functions in R. There's no clear definition of the term ...

We describe extensions to the Excel spreadsheet that integrate user-defined functions into the spreadsheet grid, rather than treating them as a “bolt-on”. Our case study is unusual in that it ...