The reverse function of CHAR() is ASCII() or ORD() in MySQL. Here, ASCII() returns numeric value of left-most character, whereas ORD() return character code for the leftmost character of the argument
Let us first create a table −
mysql> create table DemoTable ( Value int, Value1 char(1), Value2 char(1) ); Query OK, 0 rows affected (0.80 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable values(65,'A','A'); Query OK, 1 row affected (0.18 sec) mysql> insert into DemoTable values(97,'a','a'); Query OK, 1 row affected (0.13 sec)
Display all records from the table using select statement −
mysql> select *from DemoTable;
This will produce the following output −
+-------+--------+--------+ | Value | Value1 | Value2 | +-------+--------+--------+ | 65 | A | A | | 97 | a | a | +-------+--------+--------+ 2 rows in set (0.00 sec)
Let us now implement the ASCII and ORD −
mysql> select char(Value),ASCII(Value1),ORD(Value2) from DemoTable;
This will produce the following output −
+-------------+---------------+-------------+ | char(Value) | ASCII(Value1) | ORD(Value2) | +-------------+---------------+-------------+ | A | 65 | 65 | | a | 97 | 97 | +-------------+---------------+-------------+ 2 rows in set (0.03 sec)