运用plsql添加数据并自动生成主键

步骤如下：

步骤一：新建需要创建的表如：

-- Create tablecreate table IRC_SYS_DATADIC(

datadic_id VARCHAR2(64) not null,

datadic_key VARCHAR2(100),

datadic_val VARCHAR2(100),

datadic_module VARCHAR2(100),

datadic_mark VARCHAR2(100),

datadic_submodule VARCHAR2(100),

cre_time TIMESTAMP(6),

mod_time TIMESTAMP(6),

is_enable VARCHAR2(10),

reservel_var VARCHAR2(100),

reservel_num INTEGER)

tablespace CAAS pctfree 10 initrans 1 maxtrans 255 storage ( initial 64 minextents 1 maxextents unlimited );-- Add comments to the columns comment on column IRC_SYS_DATADIC.datadic_id is '数据字典主键id';

comment on column IRC_SYS_DATADIC.datadic_key is '数据字典对应的key值';

comment on column IRC_SYS_DATADIC.datadic_val is '数据字典对应的value值';

comment on column IRC_SYS_DATADIC.datadic_module is '数据字典所属的模块';

comment on column IRC_SYS_DATADIC.datadic_mark is '数据字典所对应的特殊标识';

comment on column IRC_SYS_DATADIC.datadic_submodule is '数据字典所属模块的子模块'; comment on column IRC_SYS_DATADIC.cre_time is '创建时间';

comment on column IRC_SYS_DATADIC.mod_time is '修改时间';

comment on column IRC_SYS_DATADIC.is_enable is '是否启用标识（启用为1，不启用为0）'; comment on column IRC_SYS_DATADIC.reservel_var is '预留字段字符型';

comment on column IRC_SYS_DATADIC.reservel_num is '预留字段数值型';

-- Create/Recreate primary, unique and foreign key constraints alter table IRC_SYS_DATADIC add constraint PK_DATADIC_ID primary key (DATADIC_ID) using index tablespace CAAS pctfree 10 initrans 2 maxtrans 255 storage ( initial 64K minextents 1 maxextents unlimited );

? 步骤二：新建sequence

-- Create sequence create sequence SEQ_IRC_SYS_DATADICminvalue 1maxvalue 999999999start with 21increment by 1cache 20;

步骤三：新建触发器

create or replace trigger TRI_IRC_SYS_DATADICr

before insert on IRC_SYS_DATADIC

for each row

declarebegin select SEQ_IRC_SYS_DATADIC.nextval into :new.DATADIC_ID from dual;

end TRI_IRC_SYS_DATADICr;