Syntax

1. <string_function> ::=
     <string_spec> || <string_spec>
   | <string_spec> & <string_spec>
   | ALPHA (<string_spec>[,<unsigned_integer>])
   | ASCII (<string_spec>)
   | EXPAND (<string_spec>)
   | LFILL (<string_spec>,<string_literal>[,<unsigned_integer>])
   | LOWER (<string_spec>)
   | LPAD (<string_spec>,<expression>,<string_literal>[,<unsigned_integer>])
   | LTRIM (<string_spec>[,<string_spec>])
   | MAPCHAR (<string_spec>[,<unsigned_integer>][,<mapchar_set_name>])
   | REPLACE (<string_spec>,<string_spec>[,<string_spec>])
   | RFILL (<string_spec>,<string_literal>,[,<unsigned_integer>])
   | RPAD <string_spec>,<expression>,<string_literal>[,<unsigned_integer>]
   | RTRIM <string_spec>[,<string_spec>])
   | SOUNDEX (<string_spec>)
   | SQLMODE()
   | SUBSTR (<string_spec>,<expression>[,<expression>])
   | TRANSLATE (<string_spec>,<string_spec>,<string_spec>)
   | TRIM (<string_spec>[,<string_spec>])
   | UPPER (<string_spec>)