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ASCII ​

Given a character string, return the ASCII code value, an integer, for the first character in the string.

ASCII (string)

For UTF-8 characters, the function returns an integer that corresponds to the Unicode code point.

To get the ASCII code value or Unicode code point of an integer, use the CHR function.

Examples ​

Return the code value for the exclamation mark character:

premdb=# select ascii('!') from sys.const;
 ascii 
-------
   33
(1 row)

Return code values for a set of character strings in a table:

premdb=# select *, ascii(nickname) from team where city='London' order by ascii;
 teamid | htid | atid |        name         |  nickname  |  city  |     stadium      | capacity | avg_att | ascii 
--------+------+------+---------------------+------------+--------+------------------+----------+---------+-------
    12 |   13 |   62 | Charlton Athletic   | Addicks    | London | The Valley       |    27111 |   0.000 |    65
    18 |   19 |   68 | Fulham              | Cottagers  | London | Craven Cottage   |    25700 |   0.000 |    67
    46 |   47 |   96 | Wimbledon           | Dons       | London | Selhurst Park    |    26255 |   0.000 |    68
    15 |   16 |   65 | Crystal Palace      | Eagles     | London | Selhurst Park    |    26255 |  24.636 |    69
     1 |    2 |   51 | Arsenal             | Gunners    | London | Emirates Stadium |    60260 |  59.944 |    71
    44 |   45 |   94 | West Ham United     | Hammers    | London | Upton Park       |    35016 |  34.910 |    72
    32 |   33 |   82 | Queens Park Rangers | Hoops      | London | Loftus Road      |    18439 |   0.000 |    72
    13 |   14 |   63 | Chelsea             | Pensioners | London | Stamford Bridge  |    41663 |  41.500 |    80
    41 |   42 |   91 | Tottenham Hotspur   | Spurs      | London | White Hart Lane  |    36284 |  35.776 |    83
(9 rows)