sql - transacciones - ¿Cómo crear una clave primaria compuesta utilizando Migración en Yii2?

yii2 query builder

Question

Intenté ejecutar yii migrate , pero mostró el siguiente error:

create table news-cate ...Exception: SQLSTATE[42000]: Syntax error or access violation: 1075 Incorrect table definition; there can be only one auto column and it must be defined as a key
The SQL being executed was: CREATE TABLE `news-cate` (
        `news-id` int(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
        `cate-id` int(11) NOT NULL AUTO_INCREMENT PRIMARY KEY

Aquí está mi código:

class m150821_083020_create_newscate_table extends Migration
{
    public function safeUp()
    {
        $this->createTable(''news-cate'', [
            ''news-id'' => $this->primaryKey(),
            ''cate-id'' => $this->primaryKey(),
        ]);
        $this->addForeignKey("fk_news_cate_nid", "news-cate", "news-id", "news", "id", "RESTRICT", "CASCADE");
        $this->addForeignKey("fk_news_cate_cid", "news-cate", "cate-id", "category", "id", "RESTRICT", "CASCADE");
    }

    public function safeDown()
    {
        echo "m150821_083020_create_newscate_table cannot be reverted./n";
        $this->dropTable("news-cate");
        return false;
    }
}

Entonces, ¿cómo crear una clave primaria compuesta utilizando Migración en Yii2?

Answer 1

Lo ideal es crear unión para dos tablas. Puede usar la línea de comandos Yii para crear la migración con solo un código de línea:

php yii migrate/create create_junction_table_for_post_and_tag_tables --fields="created_at:bigInteger"

Se genera:

/**
 * Handles the creation for table `post_tag`.
 * Has foreign keys to the tables:
 *
 * - `post`
 * - `tag`
 */
class m160328_041642_create_junction_table_for_post_and_tag_tables extends Migration
{
    /**
     * @inheritdoc
     */
    public function up()
    {
        $this->createTable(''post_tag'', [
            ''post_id'' => $this->integer(),
            ''tag_id'' => $this->integer(),
            ''created_at'' => $this->dateTime(),
            ''PRIMARY KEY(post_id, tag_id)'',
        ]);

        // creates index for column `post_id`
        $this->createIndex(
            ''idx-post_tag-post_id'',
            ''post_tag'',
            ''post_id''
        );

        // add foreign key for table `post`
        $this->addForeignKey(
            ''fk-post_tag-post_id'',
            ''post_tag'',
            ''post_id'',
            ''post'',
            ''id'',
            ''CASCADE''
        );

        // creates index for column `tag_id`
        $this->createIndex(
            ''idx-post_tag-tag_id'',
            ''post_tag'',
            ''tag_id''
        );

        // add foreign key for table `tag`
        $this->addForeignKey(
            ''fk-post_tag-tag_id'',
            ''post_tag'',
            ''tag_id'',
            ''tag'',
            ''id'',
            ''CASCADE''
        );
    }

    /**
     * @inheritdoc
     */
    public function down()
    {
        // drops foreign key for table `post`
        $this->dropForeignKey(
            ''fk-post_tag-post_id'',
            ''post_tag''
        );

        // drops index for column `post_id`
        $this->dropIndex(
            ''idx-post_tag-post_id'',
            ''post_tag''
        );

        // drops foreign key for table `tag`
        $this->dropForeignKey(
            ''fk-post_tag-tag_id'',
            ''post_tag''
        );

        // drops index for column `tag_id`
        $this->dropIndex(
            ''idx-post_tag-tag_id'',
            ''post_tag''
        );

        $this->dropTable(''post_tag'');
    }
}

Y la estructura de la mesa sería así:

+------------+------------+------+-----+---------+-------+
| Field      | Type       | Null | Key | Default | Extra |
+------------+------------+------+-----+---------+-------+
| post_id    | int(11)    | NO   | PRI | NULL    |       |
| tag_id     | int(11)    | NO   | PRI | NULL    |       |
| created_at | bigint(20) | YES  |     | NULL    |       |
+------------+------------+------+-----+---------+-------+

Por favor revise la siguiente URL mencionada para referencia:

http://www.yiiframework.com/doc-2.0/guide-db-migrations.html

Answer 2

prueba de esta manera

public function safeUp()
{
   $this->createTable(''news-cate'', [
        ''news-id'' =>''int NOT NULL'',
        ''cate-id'' =>''int NOT NULL'',
        ''PRIMARY KEY (news-id,cate-id)''
      ]);
    $this->addForeignKey("fk_news_cate_nid", "news-cate", "news-id", "news", "id", "RESTRICT", "CASCADE");
    $this->addForeignKey("fk_news_cate_cid", "news-cate", "cate-id", "category", "id", "RESTRICT", "CASCADE");
}

Answer 3

ACTUALIZAR

A partir de la versión 2.06 puede usar el nuevo generador de esquemas:

<?php
use yii/db/Migration;
...
$this->createTable(''news-cate'', [
    ''news-id'' => $this->integer()->notNull(),
    ''cate-id'' => $this->integer()->notNull(),
]);
$this->addPrimaryKey(''news-cate_pk'', ''news-cate'', [''news-id'', ''cate-id'']);
...
?>

RESPUESTA ORIGINAL

No agregue claves primarias en la creación de tablas, solo declare tipos:

use yii/db/Schema;

,,,

$this->createTable(''news-cate'', [
    ''news-id'' => Schema::TYPE_INTEGER . '' NOT NULL'',
    ''cate-id'' => Schema::TYPE_INTEGER . '' NOT NULL'',
]);

Después de eso, puede agregar la clave principal compuesta de esta manera:

$this->addPrimaryKey(''news-cate_pk'', ''news-cate'', [''news-id'', ''cate-id'']);

Para varias columnas, la matriz está permitida en el método addPrimaryKey() .

Esto es mejor que escribir sql crudo.