摘要:
select * from JIAOYI t declare v_name varchar2(14); -- 还是商品 varchar2(14); begin select 商品名称 into v_name from jiaoyi where 商品编号= 3; dbms_output.put_line('商品名称:'||v_name); end; drop table j... 阅读全文
摘要:
--创建一个新的chulai表 create table chulai (xingming varchar2(14), xingbie varchar(2), ninaling number(2)); select * from chulai; alter table chulai add (gongzuo varchar(14)) insert into chulai values('阿晨',... 阅读全文