CLI always uses name as column header

[dai-chen]

In SQL-CLI, name field in schema in response is used as column header. However, alias is supposed to be used if it's present.

Here is an example in MySQL CLI:

mysql> select max(age) from accounts;
+----------+
| max(age) |
+----------+
|       30 |
+----------+
1 row in set (0.06 sec)

mysql> select max(age) as max from accounts;
+------+
| max  |
+------+
|   30 |
+------+
1 row in set (0.00 sec)