SQL
Defining an Array Field
Arrays can be created using the `⟨TYPE_NAME⟩[⟨LENGTH⟩]` syntax. For example, to create an array field for 3 integers, run:  
```sql
CREATE TABLE array_table (id INTEGER, arr INTEGER[3]);
INSERT INTO array_table VALUES (10, [1, 2, 3]), (20, [4, 5, 6]);
```