先创建一个表:
drop table test;
create table test(c1 VARCHAR2(1), c2 VARCHAR2(12 CHAR), c3 VARCHAR2(4000 CHAR));drop table test;
create table test(c先创建一个表:
drop table test;
create table test(c1 VARCHAR2(1), c2 VARCHAR2(12 CHAR), c3 VARCHAR2(4000 CHAR));drop table test;
create table test(c