SQLfunkciókkal
SQLfunkciókkal refers to the use of functions within SQL (Structured Query Language). Functions are pre-defined operations that perform a specific task and return a value. They are essential for manipulating and processing data stored in relational databases.
There are various categories of SQL functions. Scalar functions operate on a single value and return a
Table-valued functions are another type, which return a table as their result. These can be used in
Using functions in SQL allows for more sophisticated data analysis, cleaner code, and improved database performance.