SQL錯誤：ORA-00906：缺少左括號00906. 00000 - 「缺少左括號」

Question

CREATE TABLE customer(customer_id NUMBER(6) PRIMARY KEY 
, customer_name VARCHAR2(40) NOT NULL 
, customer_address VARCHAR2(60) NOT NULL 
, customer_email VARCHAR2(35) 
, customer_number NUMBER (11) NOT NULL CHECK LENGTH(customer_number) = 11) 

這只是走的是米克我不明白什麼是錯

Answer 1

你不指定約束名字，我相信，你需要有括號內的檢查約束：

, customer_number NUMBER (11) NOT NULL 
    constraint custnumlen CHECK (LENGTH(customer_number) = 11)) 

看看http://www.techonthenet.com/oracle/check.php