1.非空( not null ) create table test1( id number(10), name varchar2(20) not null );
CHIL-ORACLE-创建非空约束
转载于:https://www.cnblogs.com/ChineseIntelligentLanguage/p/6513272.html
1.非空( not null ) create table test1( id number(10), name varchar2(20) not null );
转载于:https://www.cnblogs.com/ChineseIntelligentLanguage/p/6513272.html