/* * chap 02 * ------------------------------------------------- */ create or replace function wordcount(str in varchar2) return pls_integer as words pls_integer :; ); inside_a_word boolean; begin .. loop )) or i > len then if inside_a_word then word…
在SQLPLUS下,实现中-英字符集转换alter session set nls_language='AMERICAN';alter session set nls_language='SIMPLIFIED CHINESE'; 主要知识点:一.有关表的操作1)建表create table test as select * from dept; --从已知表复制数据和结构create table test as select * from dept where 1=2; --从已知表复制结构但不…