ORA-01403: 未从 INSERT 触发器中找到数据

Question

我正在尝试使用 oracle 11g 第 2 版配置数据库，我在其中创建了一个 table 名为 UTILITY:

  create table utility
  (
    u_id varchar2(12),
    name varchar2(20)NOT NULL,
    status varchar2(10),
    paid_amount number(7,2)NOT NULL,
    month varchar2 (2) NOT NULL,
    year varchar2 (4) NOT NULL,
    company varchar2(20)NOT NULL,
    constraint u_id_pk primary key(u_id)
 );

我也创建了一个序列

CREATE SEQUENCE  "ASMADB"."UTILITY_ID_SEQ"  MINVALUE 1 MAXVALUE 9999999999 
INCREMENT BY 1 START WITH 1 CACHE 10 NOORDER  NOCYCLE ;

和 table 的触发器：

create or replace trigger uility_id
before insert on utility
for each row
begin
    select to_char('U')||'-'||lpad(utility_id_seq.nextval,9,'0')
    into :new.u_id  
    from utility;
end;

但每当我尝试在实用程序中插入值时，都会发生以下错误：

Error starting at line : 1 in command
insert into utility values (' ','Electricity Bill','due',5340.59,to_char(to_date('12/06/2020','dd/mm/yyyy'),'mm'),to_char(to_date('12/06/2020','dd/mm/yyyy'),'yyyy'),'Rakib Electricity')
Error report
ORA-01403: no data found
ORA-06512: at "ASMADB.UILITY_ID", line 2
ORA-04088: error during execution of trigger 'ASMADB.UILITY_ID'

如果有人帮我解决这个错误，那将非常有帮助。

注意：table 实用程序是空的。

Answer 1

不是那样；简直

create or replace trigger uility_id
  before insert on utility
  for each row
begin
  :new.u_id := 'U-' || lpad(utility_id_seq.nextval,9,'0');
end;

ORA-01403: 未从 INSERT 触发器中找到数据

ORA-01403: no data found from INSERT trigger

sql

database

oracle

triggers

oracle11gr2