Ecto Query Patterns Master Ecto's powerful Query DSL to build efficient, composable database queries. This skill covers the query syntax, filtering, joining, aggregation, preloading associations, and advanced query composition patterns. Basic Query with from Macro Queries are built using the macro and only sent to the database when passed to a function like , , or . The keyword syntax provides a readable way to construct queries. Query with Schema Module Using a schema module instead of a table name string provides better type safety and allows Ecto to use the schema's field definitions for v…