Java JDBC 插入错误

Question

代码如下：

String sqlstatment = "INSERT INTO order (orderedBy, totalItems, totalPrice) "+
            "VALUES (?, ?, ?);";


    ResultSet keys = null;

    try (
            PreparedStatement stmt = conn.prepareStatement(sqlstatment, Statement.RETURN_GENERATED_KEYS);
            ){

        stmt.setInt(1, 1);
        stmt.setInt(2, 3);
        stmt.setInt(3, 5);

        int affected = stmt.executeUpdate();

        if (affected == 1){
            keys = stmt.getGeneratedKeys();
            keys.next();
            int newKey = keys.getInt(1);
            orderBean.setOrderID(newKey);
        }else{
            System.out.println("An Error has ocurred while creating the Order.");
        }
    }catch (SQLException e){
        System.err.println(e.getMessage());
    }finally{
        if (keys != null) keys.close();
    }

当我运行代码时，我得到这个错误：

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 'order (orderedBy, totalItems, totalPrice) VALUES (1, 3, 5)' at line 1

我不完全确定为什么会收到错误，所以如果您知道那会很棒。

Answer 1

order是保留字，试试

String sqlstatment = "INSERT INTO \"order\" (orderedBy, totalItems, totalPrice) "+
            "VALUES (?, ?, ?);";

Answer 2

您的查询包含一个 RESERVED KEYWORD order 作为您的 table 名称。 MySQL 文档明确建议应始终避免使用此类关键字，如果需要使用它们，则必须使用反引号，如下所示 '`'。

Certain objects within MySQL, including database, table, index, column, alias, view, stored procedure, partition, tablespace, and other object names are known as identifiers.

If an identifier contains special characters or is a reserved word, you must quote it whenever you refer to it.

依次分配给 String 的查询应更改为以下内容以解决此错误！

"INSERT INTO \"order\" (orderedBy, totalItems, totalPrice) VALUES (?, ?, ?);"

以下是 link MySQL -> Documentation

保留关键字的文档

希望对您有所帮助！

Java JDBC 插入错误

Java JDBC Error Insert into

java

mysql

jdbc

insert-into