1.创建增长序列 create sequence 序列名 minvalue 1 maxvalue 99999999999999999999 start with 1 increment by 1 nocache 2.创建触发器(关联表字段和序列) create or replace trigger 触发器名 before insert on 表名 for each row begin select 序列名.nextval into:new.表字段 from dual; end;
1.创建序列create sequence sequence_userinfo start with 1 increment by 1 minvalue 1 maxvalue 999999 nocycle nocache noorder;2.创建触发器create or replace trigger userinfo_triggerbefore insert on userinfofor each row begin select sequence_userinfo.nextval into:
1. Open "SQL Server Configuration Manager"2. Click "SQL Server Services" on the left pane3. Right-click on your SQL Server instance name on the right pane ->Default: SQL Server(MSSQLSERVER)4. Click "Properties"5. Click &qu
create table ttt (id number primary key ,name varchar2(20),age number(2)) create or replace trigger gger_tt before insert on ttt for each row when (new.id is null) begin select ttt_sequence.nextval into :new.id from dual; end;