ORA-00906：缺少左括号

Question

create table widep(
 cac NUMBER,
 ddate DATE,
 dtime TIMESTAMP,
 type VARCHAR2,
 amount NUMBER(10,2),
 constraint qwe foreign key(cac) references cust(cac)
)

Answer 1

完整错误消息指出Error at Command Line:5 Column:15 这个位置：

type VARCHAR2,
            ^^^

VARCHAR2需要size参数来定义最大字符数。使用像

这样的东西

create table widep(
 cac NUMBER,
 ddate DATE,
 dtime TIMESTAMP,
 type VARCHAR2(100),
 amount NUMBER(10,2),
 constraint qwe foreign key(cac) references cust(cac)
);

Answer 2

CREATE TABLE widep(
cac NUMBER(10,2) not null,
date DATE,
dtime TIMESTAMP,
type VARCHAR2(50),
amount NUMBER(10,2),
CONSTRAINT cac_fk FOREIGN KEY key(cac) REFERENCES cust(cac)
);