问题
I wonder if anyone can help me with this. I ran the whole thing in sql but its gives me this error:
Error report: SQL Error: ORA-00001: unique constraint (GAMES.ATHLETE_PK) violated 00001. 00000 - "unique constraint (%s.%s) violated" *Cause: An UPDATE or INSERT statement attempted to insert a duplicate key. For Trusted Oracle configured in DBMS MAC mode, you may see this message if a duplicate entry exists at a different level. *Action: Either remove the unique restriction or do not insert the key.
I want to insert all records at once in a single transaction. and also using sequences to generate new primary keys. I tried inserting one by one and its okay. But if i insert all at once, this is the error...
INSERT ALL
INTO athlete (athlete_no, athlete_name, athlete_birthdate, athlete_birthplace, athlete_born_country, athlete_gender, athlete_height, athlete_weight, athlete_team_country)
VALUES (athlete_no_seq.nextval, 'Michael Phelps', to_date('1985-06-30','yyyy-mm-dd'), 'Towson', 'USA', 'M', 193, 88, 'USA')
INTO athlete (athlete_no, athlete_name, athlete_birthdate, athlete_birthplace, athlete_born_country, athlete_gender, athlete_height, athlete_weight, athlete_team_country)
VALUES (athlete_no_seq.nextval, 'Stephanie Rice', to_date('1988-06-17','yyyy-mm-dd'), 'Brisbane', 'AUS', 'F', 176, 67, 'AUS')
INTO athlete (athlete_no, athlete_name, athlete_birthdate, athlete_birthplace, athlete_born_country, athlete_gender, athlete_height, athlete_weight, athlete_team_country)
VALUES (athlete_no_seq.nextval, 'Rebecca Adlington', to_date('1989-02-17','yyyy-mm-dd'), 'Mansfield', 'GBR', 'F', 179, 870, 'GBR')
INTO athlete (athlete_no, athlete_name, athlete_birthdate, athlete_birthplace, athlete_born_country, athlete_gender, athlete_height, athlete_weight, athlete_team_country)
VALUES (athlete_no_seq.nextval, 'Lee Chong Wei', to_date('1982-10-21','yyyy-mm-dd'), 'Perak', 'MAS', 'M', 170, 60, 'MAS')
INTO athlete (athlete_no, athlete_name, athlete_birthdate, athlete_birthplace, athlete_born_country, athlete_gender, athlete_height, athlete_weight, athlete_team_country)
VALUES (athlete_no_seq.nextval, 'Lin Dan', to_date('1983-10-14','yyyy-mm-dd'), 'Fujian', 'CHN', 'M', 176, 68, 'CHN')
INTO athlete (athlete_no, athlete_name, athlete_birthdate, athlete_birthplace, athlete_born_country, athlete_gender, athlete_height, athlete_weight, athlete_team_country)
VALUES (athlete_no_seq.nextval, 'Peter Gade', to_date('1976-12-14','yyyy-mm-dd'), 'Aalborg', 'DEN', 'M', 183, 73, 'DEN')
INTO competes (athlete_no, discipline_code, sg_gameno)
VALUES (athlete_no_seq.currval, (SELECT discipline_code FROM discipline where discipline_name = 'Swimming'), 30)
INTO competes (athlete_no, discipline_code, sg_gameno)
VALUES (athlete_no_seq.currval, (SELECT discipline_code FROM discipline where discipline_name = 'Swimming'), 30)
INTO competes (athlete_no, discipline_code, sg_gameno)
VALUES (athlete_no_seq.currval, (SELECT discipline_code FROM discipline where discipline_name = 'Swimming'), 30)
INTO competes (athlete_no, discipline_code, sg_gameno)
VALUES (athlete_no_seq.currval, (SELECT discipline_code FROM discipline where discipline_name = 'Swimming'), 30)
INTO competes (athlete_no, discipline_code, sg_gameno)
VALUES (athlete_no_seq.currval, (SELECT discipline_code FROM discipline where discipline_name = 'Swimming'), 30)
INTO competes (athlete_no, discipline_code, sg_gameno)
VALUES (athlete_no_seq.currval, (SELECT discipline_code FROM discipline where discipline_name = 'Swimming'), 30)
INTO venue(venue_no, venue_name, venue_location, venue_usedfrom, venueused_to, venue_seatingcapacity, venue_structure, venue_use)
VALUES(venue_no_seq.nextval, 'Aquatics Centre', 'Olympics Park, East London', to_date('2012-07-28','yyyy-mm-dd'), to_date('2012-10-08','yyyy-mm-dd'), 17500, 'N', 'P')
INTO venue(venue_no, venue_name, venue_location, venue_usedfrom, venueused_to, venue_seatingcapacity, venue_structure, venue_use)
VALUES(venue_no_seq.nextval, 'Wembley Arena', 'North West London', to_date('2012-07-28','yyyy-,mm-dd'), to_date('2012-08-05','yyyy-mm-dd'), 6000, 'E', 'P')
SELECT * FROM dual;
commit;
回答1:
The posted code uses the INSERT ALL syntax to insert multiple rows in a single statement. It attempts to use sequence NEXTVAL to generate a unique identifier for each row.
The documentation is quite clear on the functioning of NEXTVAL:
"Within a single SQL statement containing a reference to NEXTVAL, Oracle increments the sequence once"
So each of those calls to NEXTVAL will return the same value from the sequence, and so the statement hurls ORA-00001.
The problem is that the OP's code is misusing the multi-table insert syntax. It is intended to distribute rows from one set of source data across several tables, or conditionally manipulate the rows into one table. In either case it assumes the source data already has a primary key.
There are various ways of working around this, from hardcoding the ID to using multiple single table insert statements.
Here is one way to populate these tables with the posted data:
insert into athlete (athlete_no, athlete_name, athlete_birthdate, athlete_birthplace, athlete_born_country, athlete_gender, athlete_height, athlete_weight, athlete_team_country)
select athlete_no_seq.nextval , nm, dt, pl, ctry, gn, ht, wt, tm
from (
select 'Michael Phelps' nm, to_date('1985-06-30','yyyy-mm-dd') dt, 'Towson' pl, 'USA' ctry, 'M' gn, 193 ht, 88 wt, 'USA' tm from dual union all
select 'Stephanie Rice', to_date('1988-06-17','yyyy-mm-dd'), 'Brisbane', 'AUS', 'F', 176, 67, 'AUS' from dual union all
select 'Rebecca Adlington', to_date('1989-02-17','yyyy-mm-dd'), 'Mansfield', 'GBR', 'F', 179, 870, 'GBR' from dual union all
select 'Lee Chong Wei', to_date('1982-10-21','yyyy-mm-dd'), 'Perak', 'MAS', 'M', 170, 60, 'MAS' from dual union all
select 'Lin Dan', to_date('1983-10-14','yyyy-mm-dd'), 'Fujian', 'CHN', 'M', 176, 68, 'CHN' from dual union all
select 'Peter Gade', to_date('1976-12-14','yyyy-mm-dd'), 'Aalborg', 'DEN', 'M', 183, 73, 'DEN' from dual
)
/
insert into competes (athlete_no, discipline_code, sg_gameno)
select ath.athlete_no, disc.discipline_code, 30
from athlete ath
cross join discipline disc
where disc.discipline_name = 'Swimming'
/
insert into venue(venue_no, venue_name, venue_location, venue_usedfrom, venueused_to, venue_seatingcapacity, venue_structure, venue_use)
select venue_no_seq.nextval, nm, loc, dtf, dtt, cap, vs, vu
from (
select 'Aquatics Centre' nm, 'Olympics Park, East London' loc, to_date('2012-07-28','yyyy-mm-dd') dtf, to_date('2012-10-08','yyyy-mm-dd') dtt, 17500 cap, 'N' vs, 'P' vu from dual union all
select 'Wembley Arena', 'North West London', to_date('2012-07-28','yyyy-,mm-dd'), to_date('2012-08-05','yyyy-mm-dd'), 6000, 'E', 'P' from dual
)
/
来源：https://stackoverflow.com/questions/12353732/pk-violated-in-oracle-sql