Question

这是我创建的表和我拥有的insert语句。

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上尝试过，TIMESTAMP格式在表格中必须是唯一的。我不知道你是在甲骨文。这适用于SQL服务器：

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');

对于Oracle，您需要To_date函数（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');

这应该有效。我还纠正了你变量的长度。请注意，如果没有足够的空间，Oracle会截断你的字符串。

SQL不是有效的月份

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