php - 字段列表中的列 'wine_id' 不明确错误，无法弄清楚原因

Question

我已经尝试在谷歌和此处进行研究，但对我来说真的没有意义。继续收到以下错误。任何示例或更新都会很棒。

$this->db->select("wineinfo.*, wine_id, Vintage, Region,id,");
$this->db->from("wineinfo");
$this->db->where(["wine_id" => "19"]);
$this->db->join("wines", "wineinfo.wine_id = wines.id");
$wine = $this->db->get()->row();

错误号:1052

字段列表中的“wine_id”列不明确

SELECT wineinfo.*, wine_id, 年份, 地区, id FROM (wineinfo) JOIN wines ON wineinfo.wine_id = wines.id WHERE wine_id = '19'

文件名:/home/winebay/public_html/views/single-listing.php

行号:20

Answer 1

从显式选择列表中删除 wine_id:

$this->db->select("wineinfo.*, Vintage, Region, id");
$this->db->from("wineinfo");
$this->db->where(["wineinfo.wine_id" => "19"]);
$this->db->join("wines", "wineinfo.wine_id = wines.wine_id");
$wine = $this->db->get()->row();

这个错误通常是因为 MySQL 无法从 表中找出 wine_id 列来的。通过从选择列表中删除 wine_id，您只选择了 wineinfo.wine_id，这是明确的。