摘要:
1.LPADSyntaxlpad::= Text description of lpadPurposeLPAD returns char1, left-padded to length n with the sequence of characters in char2; char2 defaults to a single blank. If char1 is longer than n, th... 阅读全文
摘要:
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 48 322.CHR给出整数,返回对应的字符;SQL> s... 阅读全文