ARRAY_AGG for collecting values

Concepts: sqlArrayAgg

ARRAY_AGG Fundamentals Basic Syntax For each customer, this collects all their order IDs into a single array. The result is an array type that can be processed by other functions. Practical Example Consider an orders table: Each customer appears once with all their products collected in an array. The array preserves each individual value. Arrays vs Strings Arrays provide significant advantages over comma-separated strings for storing collected values. Why Arrays Beat Strings Arrays preserve structure in a way that comma-separated strings cannot. Arrays as Strings Which approach preserves type information when collecting values?