SQLSTATE[23000]：违反完整性约束：1052 Column 'name' in where clause is ambiguous .. Yii2

Question

这里我运行在 Yii2 gridview 中尝试搜索时出现以下错误

SQLSTATE[23000]: Integrity constraint violation: 1052 Column 'name' in where clause is ambiguous
The SQL being executed was: SELECT COUNT(*) FROM `leagues` LEFT JOIN `country` ON 
`leagues`.`country_id` = `country`.`id` WHERE `name` LIKE '%Eredivisie%'

下面的 sql 代码是由 Yii 生成的，所以我不知道 sql 错误的原因或如何操作它。下面是我的搜索模型，显示了两者之间的关系 table

<?php

namespace backend\models;

use yii\base\Model;
use yii\data\ActiveDataProvider;
use backend\models\League;


class LeagueSearch extends League
{
    /**
     * {@inheritdoc}
     */
        public function rules()


  {
        return [
           [['id', 'created_at', 'updated_at'], 'integer'],
           [['name','country_id'], 'safe'],
       ];
    }

/**
 * {@inheritdoc}
 */
public function scenarios()
{
    // bypass scenarios() implementation in the parent class
    return Model::scenarios();
}

/**
 * Creates data provider instance with search query applied
 *
 * @param array $params
 *
 * @return ActiveDataProvider
 */
public function search($params)
{
    $query = League::find();


    $query->joinWith('country');
    // add conditions that should always apply here

    $dataProvider = new ActiveDataProvider([
        'query' => $query,
        'sort'=> ['defaultOrder' => ['name' => SORT_ASC]],
    ]);

    $this->load($params);

    if (!$this->validate()) {
        // uncomment the following line if you do not want to return any records when validation fails
        // $query->where('0=1');
        return $dataProvider;
    }

    // grid filtering conditions
    $query->andFilterWhere([
        'id' => $this->id,
        'created_at' => $this->created_at,
        'updated_at' => $this->updated_at,
    ]);

    $query->andFilterWhere(['like', 'name', $this->name])
          ->andFilterWhere(['like', 'country.name',$this->country_id]);

    return $dataProvider;
}
}

name 是联盟 table 中的一个列，国家/地区也有一个名为 name 的列，所以我认为 sql 在这里遗漏了一些东西。对此的任何帮助将不胜感激

Answer 1

因为您在 table、country 和 league 中都有 name 列，这就是您收到错误的原因。

Column 'name' in where clause is ambiguous

更改以下行

 $query->andFilterWhere(['like', 'name', $this->name])

至

$query->andFilterWhere(['like', '{{%league}}.name', $this->name])

或

为 league table

分配一个别名

$query = League::find()->alias('l');

并为 league table 中的 name 列使用该别名，如下所示

$query->andFilterWhere(['like', 'l.name', $this->name])

另一件事是您将 country_id 与国家 name 列进行比较？

andFilterWhere(['like', 'country.name',$this->country_id]);

如果 $this->country_id 中有一个 id，您应该与 country.id 进行比较。

SQLSTATE[23000]：违反完整性约束：1052 Column 'name' in where clause is ambiguous .. Yii2

SQLSTATE[23000]: Integrity constraint violation: 1052 Column 'name' in where clause is ambiguous .. Yii2

yii2