php - 如何从 SQL View 中进行 SELECT？ (一般错误: 1615 Prepared statement needs to be re-prepared)

Question

更新: 该查询工作正常，如下所示；仅当我从 View 中进行选择时才会出现该错误。

$query = "
SELECT ModuleID, ModuleName, Credits, Lecturer, Room, EmployeeID, Forename, Surname, RoomID, RoomCode
FROM ((Module 
INNER JOIN Employee ON Module.Lecturer = Employee.EmployeeID) 
INNER JOIN Room ON Module.Room = Room.RoomID)
";

$result = $DBH->prepare($query);
$result->execute();
$data = $result->fetchAll();

尝试SELECT * FROM我创建的 View 时收到以下错误。 (从表格中选择效果很好)。

Uncaught exception 'PDOException' with message 'SQLSTATE[HY000]: General error: 1615 Prepared statement needs to be re-prepared'

我使用时没有任何问题

SELECT * FROM Module

这是我的查询:

$query = "
SELECT * FROM module_info
";

$result = $DBH->prepare($query);
$result->execute();
$data = $result->fetchAll();

我创建的 View :

CREATE VIEW module_info 
AS
SELECT ModuleID, ModuleName, Credits, Lecturer, Room, EmployeeID, Forename, Surname, RoomID, RoomCode
FROM ((Module 
INNER JOIN Employee ON Module.Lecturer = Employee.EmployeeID) 
INNER JOIN Room ON Module.Room = Room.RoomID);

Answer 1

本例的解决方案如下:

需要启用准备语句的模拟。

在连接文件中，以下行

PDO::ATTR_EMULATE_PREPARES   => false,

需要像这样改变:

PDO::ATTR_EMULATE_PREPARES   => true,

在其他情况下，解决方案可能是增加table_definitition_cache