SQL无效月

Question

这是我创建的表和insert声明。

这有什么问题？

CREATE TABLE FLIGHT_SA 
(FLIGHT_NUMBER CHAR(10) PRIMARY KEY, 
AIRCRAFT_ID CHAR(15) NOT NULL, 
TRANSFER_FLIGHT_NUMBER CHAR(25) NOT NULL, 
DEPARTURE_DATE_TIME TIMESTAMP, 
ARRIVAL_DATE_TIME TIMESTAMP, 
DEPARTURE_AIRPORT_CODE CHAR(15), 
TRANSFER_AIRPORT_CODE CHAR(15), 
ARRIVAL_AIRPORT_CODE CHAR(15), 
DURATION CHAR(5)); 

INSERT INTO FLIGHT_SA 
VALUES 
('MS986','B773','MS798','2016-06-05 10:45:01','2016-06-05 12:45:01', 
'Baltimore,MD (BWI)','Philadephia,PA (PHL)','Miami,FL (MIA)','5 HOURS'); 

Answer 1

刚刚在sql server上试过，TIMESTAMP格式在表中必须是唯一的。我不知道你在Oracle上。这适用SQL服务器上：

CREATE TABLE FLIGHT_SA 
(FLIGHT_NUMBER CHAR(10) PRIMARY KEY, 
AIRCRAFT_ID CHAR(15) NOT NULL, 
TRANSFER_FLIGHT_NUMBER CHAR(25) NOT NULL, 
DEPARTURE_DATE_TIME DATETIME, 
ARRIVAL_DATE_TIME DATETIME, 
DEPARTURE_AIRPORT_CODE CHAR(30), 
TRANSFER_AIRPORT_CODE CHAR(30), 
ARRIVAL_AIRPORT_CODE CHAR(30), 
DURATION CHAR(10)); 

INSERT INTO FLIGHT_SA 
VALUES 
('MS986','B773','MS798','2016-06-05 10:45:01','2016-06-05 12:45:01','Baltimore,MD (BWI)','Philadephia,PA (PHL)','Miami,FL (MIA)','5 HOURS'); 

而对于Oracle，您需要To_date功能（http://www.techonthenet.com/oracle/questions/insert_date.php）：

CREATE TABLE FLIGHT_SA 
(FLIGHT_NUMBER CHAR(10) PRIMARY KEY, 
AIRCRAFT_ID CHAR(15) NOT NULL, 
TRANSFER_FLIGHT_NUMBER CHAR(25) NOT NULL, 
DEPARTURE_DATE_TIME DATETIME, 
ARRIVAL_DATE_TIME DATETIME, 
DEPARTURE_AIRPORT_CODE CHAR(30), 
TRANSFER_AIRPORT_CODE CHAR(30), 
ARRIVAL_AIRPORT_CODE CHAR(30), 
DURATION CHAR(10)); 

INSERT INTO FLIGHT_SA 
VALUES 
('MS986','B773','MS798',TO_DATE('2016-06-05 10:45:01','yyyy/mm/dd hh24:mi:ss'),TO_DATE('2016-06-05 12:45:01','yyyy/mm/dd hh24:mi:ss'),'Baltimore,MD (BWI)','Philadephia,PA (PHL)','Miami,FL (MIA)','5 HOURS'); 

这应该工作。我也纠正了你字符变量的长度。注意，如果你没有给它足够的空间，Oracle会截断你的字符串。