Question

我在PHP页面上弹出以下错误。这是在查询发生之前回显$ flightquery的结果。

INSERT INTO Flights (`adshex`,`flightno`,`route`) VALUES ('01002F','MSR845','HECA-DAAG') WHERE NOT EXISTS (SELECT flightno FROM Flights WHERE `flightno` = 'MSR845' AND `adshex` = '01002F' AND TIMESTAMPDIFF(MINUTE,`timestamp`,CURRENT_TIMESTAMP) > 360);

Error: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'WHERE NOT EXISTS (SELECT flightno FROM Flights WHERE `flightno` = 'MSR845' AND `' at line 1

如果我将insert语句复制到MYSQL服务器中它没有错误，但是通过PHP它会中断！

  $flightquery = "INSERT INTO Flights (`adshex`,`flightno`,`route`) VALUES ('$adshex','$flightno','$route') WHERE NOT EXISTS (SELECT flightno FROM Flights WHERE `flightno` = '$flightno' AND `adshex` = '$adshex' AND TIMESTAMPDIFF(MINUTE,`timestamp`,CURRENT_TIMESTAMP) > 360);";

更新

我把它更改为errno，它是1064，这是保留关键字，我在做什么？时间戳？

Answer 1

让坏男孩在;后删除360)，

Answer 2

MySQL syntax for INSERT WHERE INSERT条款{{1}}。

Answer 3

查询在MySQL服务器中不起作用，因为有PHP变量。

$ adshex，$ flightno，$ route

"INSERT INTO Flights (`adshex`,`flightno`,`route`) 
VALUES ('$adshex','$flightno','$route') 
WHERE NOT EXISTS (SELECT flightno FROM Flights 
    WHERE `flightno` = '$flightno' AND `adshex` = '$**adshex**' 
    AND TIMESTAMPDIFF(MINUTE,`timestamp`,CURRENT_TIMESTAMP) > 360);

MYSQL查询可以直接工作，但不能通过PHP工作！

3 个答案: