Syntax
ASCII(str)
Purpose
Returns the ASCII code of the leftmost character in the string str.
If str is an empty string, this function returns 0. If str is NULL, this function returns NULL.
Examples
obclient> SELECT ASCII('');
+-----------+
| ASCII('') |
+-----------+
| 0 |
+-----------+
1 row in set
obclient> SELECT ASCII('oceanbase');
+--------------------+
| ASCII('oceanbase') |
+--------------------+
| 111 |
+--------------------+
1 row in set
obclient> SELECT ASCII('Oceanbase');
+--------------------+
| ASCII('Oceanbase') |
+--------------------+
| 79 |
+--------------------+
1 row in set