字符串函数<br/>1.ASCII<br/>返回与指定的字符对应的十进制数;<br/>SQL> select ascii('A') A,ascii('a') a,ascii('0') zero,ascii(' ') space from dual;<br/>A A ZERO SPACE<br/>--------- --------- --------- ---------<br/>65 97 48 32<br/>2.CHR<br/>给出整数,返回对应的字符;<br/>SQL> select chr(54740) zhao,chr(65) chr65 from dual;<br/>ZH C<br/>-- -<br/>赵 A<br/>等等函数,详细请下载查看