Create trigger with a cursor inside for multiple inserts - oracle

Question

I want to create a trigger on every insert to the USERS table that will insert several entries to the BALANCES table, one entry for every coin id that exists in the SQL_COINS_VIEW view (hope i'm clear enough). The idea is that every time an account is created, it gets a balance 0 for each available coin in the list.
I tried this -
CREATE or REPLACE TRIGGER update_balances
AFTER INSERT
ON USERS
FOR EACH ROW
DECLARE
v_userid number(8);
cursor coinlist_cur is
select ID from SQL_COINS_VIEW;
BEGIN
select ID into v_userid from USERS;
For coinid in coinlist_cur
loop
insert into balances
(BALANCES_ID_SEQ.NEXTVAL,v_userid,coinid,0);
end loop;
END;
But i get an error -
Error(10,1): PL/SQL: SQL Statement ignored
Error(11,42): PL/SQL: ORA-01747: invalid user.table.column, table.column, or column specification
The tables are structures this way -
SQL> desc SQL_COINS_VIEW;
Name Null? Type
----------------------------------------- -------- ----------------------------
ID NOT NULL NUMBER(10)
NAME NOT NULL VARCHAR2(50)
VALUE NOT NULL NUMBER(18,6)
UPDATETIME NVARCHAR2(10)
SQL>
SQL> desc USERS;
Name Null? Type
----------------------------------------- -------- ----------------------------
ID NOT NULL NUMBER(8)
LOGINNAME NOT NULL VARCHAR2(12)
PASSWORD NOT NULL VARCHAR2(12)
EMAIL NOT NULL VARCHAR2(50)
PHONENUMBER VARCHAR2(25)
SQL>
SQL> desc BALANCES;
Name Null? Type
----------------------------------------- -------- ----------------------------
ID NOT NULL NUMBER(12)
USERID NOT NULL NUMBER(8)
COINID NOT NULL NUMBER(10)
AMOUNT NOT NULL NUMBER(30)
How can i properly create this trigger?
Thanks in advance.

Answer 1

Your insert is missing the values keyword; the error is from it trying to interpret the values as column names. And coinid is a record, so you need to refer to a field within that, which is id in the cursor declaration:
insert into balances
values (BALANCES_ID_SEQ.NEXTVAL,v_userid,coinid.id,0);
It's good practice to list the columns too though.