| --- |
| { |
| "title": "ARRAY_MAX", |
| "language": "en" |
| } |
| --- |
| |
| ## array_max |
| |
| array_max |
| |
| ### description |
| |
| #### Syntax |
| `T array_max(ARRAY<T> array1)` |
| |
| Get the maximum element in an array (`NULL` values are skipped). |
| When the array is empty or all elements in the array are `NULL` values, the function returns `NULL`. |
| |
| ### example |
| |
| ```shell |
| mysql> create table array_type_table(k1 INT, k2 Array<int>) duplicate key (k1) |
| -> distributed by hash(k1) buckets 1 properties('replication_num' = '1'); |
| mysql> insert into array_type_table values (0, []), (1, [NULL]), (2, [1, 2, 3]), (3, [1, NULL, 3]); |
| mysql> select k2, array_max(k2) from array_type_table; |
| +--------------+-----------------+ |
| | k2 | array_max(`k2`) | |
| +--------------+-----------------+ |
| | [] | NULL | |
| | [NULL] | NULL | |
| | [1, 2, 3] | 3 | |
| | [1, NULL, 3] | 3 | |
| +--------------+-----------------+ |
| 4 rows in set (0.02 sec) |
| |
| ``` |
| |
| ### keywords |
| |
| ARRAY,MAX,ARRAY_MAX |
| |
