oracle中设置主键

Posted 2020-12-24 s硕s

1.创建表

create table "c_user"(
"id" number primary key,
"username" varchar(255),
"password" varchar(255),
"p_name" varchar(255),
"p_number" varchar(255),
"p_date" varchar(255),
"p_referenceNumber" varchar(255),
"tech_area" varchar(255),
"platformLevel" varchar(255),
"address" varchar(255),
"permission" int(10),
"type1" varchar(255),
"union1" int(10),
"BTHconStruction" int(10),
"service1" varchar(255),
"service2" varchar(255),
"service3" varchar(255),
"course1" varchar(255),
"course2" varchar(255),
"course3" varchar(255),
"relyName" varchar(255),
"credit" varchar(255),
"relylegalName" varchar(255),
"phone" varchar(255),
"unitType" varchar(255),
"constructionUnit" varchar(255),
"directorName" varchar(255),
"directorSex" varchar(255),
"directorBirthyear" varchar(255),
"directorTitle" varchar(255),
"directorProfessional" varchar(255),
"directorEducation" varchar(255),
"directorDegree" varchar(255),
"directorTele" varchar(255),
"directorPhone" varchar(255),
"directorEmail" varchar(255),
"webName" varchar(255),
"webSite" varchar(255),
"addrplatformAddressess" varchar(255),
"email" varchar(255),
"state" int(2),
"u_type" int(6),
"p_type" int(2)

);

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             #查看约束
                

select * from user_constraints;

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            ////设置主键自增////

               2.创建序列

                  

select * from user_constraints;

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                #查看序列
                     

 select * from user_sequences;

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　　　　3.设置触发器  //若表名为小写时，操作时应加“”号查找，列字段相同，在NAvicat中需要，eclipse可以不用。

 

create or replace trigger c_user_trigger 
before insert on "c_user"
for each row
when(new."id" is null)
begin
select c_user_id_seq.nextval into:new."id" from dual;
end;

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　　　　　#查看触发器
　　　　　　

　select * from user_triggers;

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　　　　　#测试

                        

commit;//命令行操作需要
                        select * from "c_user";

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