oracle中常用函数说明. SQL中的单记录函数 1.ASCII 返回与指定的字符对应的十进制数 SQL> select ascii( A ) A,ascii( a ) a,ascii( 0 ) zero,ascii( ) space from dual A A ZERO SPACE --------- --------- --------- --------- 65 97 48 32 2.CHR 给出整数,返回对应的字符 SQL>

输入一个字符串，扫描该字符串，按数字、字母和特殊字符3类，把字符分类输出到屏幕，并计算其中数字字符的和，把求得的和以十进制数的形式输出到屏幕。-Enter a string, the string scanning, numbers, letters and special characters are three types of character output to the screen, and calculate one of the numeric characters, to ob

VB源码，关于二进制、八进制、十进制和十六进制之间的转换。-VB source code, on the binary, octal, decimal and hexadecimal conversion between.