SQL
List Aggregates
Concatenates list/array elements using an optional delimiter.  
```sql
SELECT array_to_string([1, 2, 3], '-') AS str;
```  
```text
1-2-3
```  
This is equivalent to the following SQL:  
```sql
SELECT list_aggr([1, 2, 3], 'string_agg', '-') AS str;
```  
```text
1-2-3
```