create table HOUSEHOLDSTAFFS
(
ID NUMBER(10) not null,
IDCARDNO VARCHAR2(60) not null,
NAME VARCHAR2(60) not null,
LOGOUT NUMBER(1) default 0 ,
……
constraint PK_HOUSEHOLDSTAFFS_ID primary key (ID),
constraint FK_CENSUSREGISTER_FAMILYID foreign key (FAMILYID)
);
comment on column HOUSEHOLDSTAFFS.IDCARDNO
is '身份证号';
comment on column HOUSEHOLDSTAFFS.NAME
is '姓名';
comment on column HOUSEHOLDSTAFFS.USEDNAME
is '曾用名';
comment on column HOUSEHOLDSTAFFS.LOGOUT
is '是否注销 0否 1是';
……
增进去一条数据,不对logOut做任何设置(即添加进去的数据logOut=null),发现default 0 并没有起作用,logOut是null。
将创建表的语句改为如下就ok了
create table HOUSEHOLDSTAFFS
(
ID NUMBER(10) not null,
IDCARDNO VARCHAR2(60) not null,
NAME VARCHAR2(60) not null,
LOGOUT NUMBER(1) default 0 not null,
……
constraint PK_HOUSEHOLDSTAFFS_ID primary key (ID),
constraint FK_CENSUSREGISTER_FAMILYID foreign key (FAMILYID)
);
…………
再次添加一条数据,不对logOut做任何设置(即添加进去的数据logOut=null),查询结果,发现logOut会生成默认值0
创建表时default默认值不起作用
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转载自deony2jacob1314.iteye.com/blog/1654873
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