table type functions set of functions example | postgresql

Описание: This video will give different use-cases of functions returning set of and table type .
Table-valued functions (TVFs) in PostgreSQL are functions that return a set of rows as a table.
They can be used to encapsulate a complex query or computation, making it easier to reuse in multiple places.

Notes:-
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One of the main benefits of using TVFs is that they can improve the readability and maintainability of our code. By encapsulating a complex query or computation into a TVF, as we can give it a descriptive name and use it like any other table in your code. This can make our code easier to understand and modify if needed, especially if we have multiple developers working on the same codebase.

Another benefit of TVFs is that they can improve the performance of your queries. PostgreSQL can optimize TVFs just like regular tables, which means that we can use them to break up complex queries into smaller, more efficient pieces. This can be especially useful if we need to perform the same computation or query multiple times in our code. By encapsulating the computation into a TVF, we can avoid repeating the same code multiple times and potentially save on computation time.