当我运行我的程序时,它显示列超出范围的错误。连接正常
例如
updateRecoredtoStudent(15, "Annies","Bot"," Ionia", "1/1/2013","firstname","Anny")
private static void updateRecordToStudent(int studentid, String firstname, String lastname,String address, String dateofbirth, String cond_col, String cond_val) throws SQLException {
Connection dbConnection = null;
PreparedStatement preparedStatement = null;
String updateTableSQL = "UPDATE student SET 'studentid' = ? 'firstname' = ? 'lastname' = ? 'address' = ? dateofbirth' = ? WHERE ? = ?";
try {
dbConnection = getDBConnection();
preparedStatement = dbConnection.prepareStatement(updateTableSQL);
preparedStatement.setInt(1, studentid);
preparedStatement.setString(2, firstname);
preparedStatement.setString(3, lastname);
preparedStatement.setString(4, address);
preparedStatement.setString(5, dateofbirth);
preparedStatement.setString(6, cond_col);
preparedStatement.setString(7, cond_val);
// execute update SQL stetement
preparedStatement.executeUpdate();
System.out.println("Record is updated to STUDENT table!");
} catch (SQLException e) {
System.out.println(e.getMessage());
} finally {
if (preparedStatement != null) {
preparedStatement.close();
}
if (dbConnection != null) {
dbConnection.close();
}
}
}
Student table contains
-studentid(int-PK)
-Firstname(String)
-lastname(String)
-Address(String)
-Dateofbirth(String)
最佳答案
String updateTableSQL = "UPDATE student SET studentid = ?, firstname = ?, lastname = ?, address = ?, dateofbirth = ? WHERE "+cond_col+" = ?";
preparedStatement.setInt(1, studentid);
preparedStatement.setString(2, firstname);
preparedStatement.setString(3, lastname);
preparedStatement.setString(4, address);
preparedStatement.setString(5, dateofbirth);
preparedStatement.setString(6, cond_val);
只能设置列值。如果你想传递动态列名,你应该将它与查询连接起来。列名称之间还缺少 ,
的内容。
关于java - SQL 异常 : the index is out of range,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/32807427/