sql - apache derby: specifying an ID for a column "GENERATED BY DEFAULT AS IDENTITY" -


the following sql statements apache derby works fine:

connect 'jdbc:derby://uri';  create schema test02; set schema test02 ;  create table t     (     id int not null primary key generated default identity (start 1, increment 1),     name varchar(50) not null unique     );     insert t(name) values ('name02'); insert t(name) values ('name03'); select * t; drop table t ; drop schema test02 restrict;   disconnect;

output:

ij> insert t(name) values ('name02'); 1 row inserted/updated/deleted ij> insert t(name) values ('name03'); 1 row inserted/updated/deleted ij> select * t; id         |name                                               -------------------------------------------------------------- 1          |name02                                             2          |name03

but when 'know' id of records, , set id in insert statement:

## here set id column  ij> insert t(id,name) values (1,'name01'); 1 row inserted/updated/deleted  ij> insert t(name) values ('name02'); error 23505: statement aborted because have caused duplicate key value in unique or primary key constraint or unique index identified 'sql130515100041380' defined on 't'. ij> insert t(name) values ('name03'); 1 row inserted/updated/deleted ij> select * t; id         |name                                               -------------------------------------------------------------- 1          |name01                                             2          |name03                                              2 rows selected

how can fix this, how can have auto_increment column can, sometimes, set primary key ?

you're looking alter table ... restart with. here's docs:

http://db.apache.org/derby/docs/10.9/ref/rrefsqlj81859.html#rrefsqlj81859__rrefsqlj37860


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