SQL ServerコードをOracleに変換する

Question

SQL ServerコードをOracleに変換しようとしましたが失敗しました。

ここはSQL Serverのコードです。誰も助けることができますか？

（オラクル部12c）のような単純な

CREATE TABLE [dbo].[DimCustomer] 
(
    CustomerID INT IDENTITY(12,1) NOT NULL, 
    CustomerAccountID VARCHAR(20), 
    FirstName VARCHAR(50), 
    LastName VARCHAR(50), 
    FullName AS CONCAT(FirstName,' ',LastName), 
    ContactNumber VARCHAR(20), 
    EmailAddress VARCHAR(50), 
    MemberShipType VARCHAR(50), 
    MemberShipStartDatekey INT, 
    MemberShipExpiryDateKey INT, 

    CONSTRAINT pk_customer_id PRIMARY KEY (CustomerID) 
) 

Answer 1

：シーケンスとトリガーを使用して

CREATE TABLE DimCustomer 
(
CustomerID INT GENERATED BY DEFAULT AS IDENTITY NOT NULL --IDENTITY 
,CustomerAccountID VARCHAR2(20)        --VARCHAR2 
,FirstName VARCHAR2(50) 
,LastName VARCHAR2(50) 
,FullName AS (FirstName || ' ' ||LastName)     --calculated column 
,ContactNumber VARCHAR2(20) 
,EmailAddress VARCHAR2(50) 
,MemberShipType VARCHAR2(50) 
,MemeberShipStartDatekey INT 
,MemberShipExpiryDateKey INT 
,CONSTRAINT pk_customer_id PRIMARY KEY (CustomerID)   --comma 
); 

---

オルタナティブ：

CREATE SEQUENCE DimCustomer_seq START WITH 12 INCREMENT BY 1; 

CREATE OR REPLACE TRIGGER DimCustomer_seq_tr 
BEFORE INSERT ON DimCustomer FOR EACH ROW 
BEGIN 
SELECT DimCustomer_seq.NEXTVAL INTO :NEW.CustomerID FROM DUAL; 
END;