代码点火器模型在我的查询中插入额外的字符 - CodeIgniter model insert extra characters in my query

CodeIgniter model insert extra characters in my query

我正在CodeIgniter模型中执行查询，这是我的代码：

if($query = $this->db->select('postID, users.userID, users.userFirstName, users.userLastName, postTitle, postDescription, postHtmlContent, date_format(creationDate, "%d %b, %Y") as creationDate, date_format(updationDate, "%d %b, %Y") as updationDate, cover, postType')->from('posts, users')->where('users.userID = posts.userID and postID = 1 and postStatus = "APPROVED"')->get()){
            return $query->result()[0];
        }else{
            return NULL;
        }

虽然在 MySQL 控制台上执行此查询工作正常，但对于 CodeIgniter 的此活动记录模式，date_format部分中引入了一些额外的字符。这是CodeIgniter显示的错误，所有多余的字符在date_format(creationDate,"%d %b, %Y"）part中清晰可见。

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 'FROM (`posts`, `users`) WHERE `users`.`userID` = posts.userID and postID = 1 and' at line 2
SELECT `postID`, `users`.`userID`, `users`.`userFirstName`, `users`.`userLastName`, `postTitle`, `postDescription`, `postHtmlContent`, date_format(creationDate, `"%d` %b, `%Y")` as creationDate, date_format(updationDate, `"%d` %b, `%Y")` as updationDate, `cover`, `postType` FROM (`posts`, `users`) WHERE `users`.`userID` = posts.userID and postID = 1 and postStatus = "APPROVED"

我如何解决这个问题，任何帮助将不胜感激。谢谢

只需添加false作为选择的第二个参数，这样代码点火器就不会转换格式

if($query = $this->db->select('postID, users.userID, users.userFirstName, users.userLastName, postTitle, postDescription, postHtmlContent, date_format(creationDate, "%d %b, %Y") as creationDate, date_format(updationDate, "%d %b, %Y") as updationDate, cover, postType',false)->from('posts, users')->where('users.userID = posts.userID and postID = 1 and postStatus = "APPROVED"')->get()){
        return $query->result()[0];
    }else{
        return NULL;
    }

$this->db->select（）接受可选的第二个参数。如果将其设置为 FALSE，CodeIgniter 将不会尝试使用反引号保护您的字段或表名称。如果需要复合选择语句，这将非常有用。

要删除反引号，您必须向所选部分添加第二个可选参数（FALSE）：

$this->db->select("postID, userID, . . .", FALSE);