Combine Results with union and union_all Options
Explore how to combine the results of multiple database queries in Elixir using Ecto's union and union_all options. Understand the differences between these methods for handling duplicates and discover how to use intersect and except options to refine query results. This lesson helps you write more efficient and flexible queries for complex data retrieval.
We'll cover the following...
We'll cover the following...
The union option
To combine the results of different queries, SQL provides the UNION operator. We can perform union queries in Ecto by adding the union: option to our queries. The two queries need to have result sets with the same column names ...