Yii2 在事务回滚时重置数据库 ID

Question

我注意到事务回滚，主键 ID 不断增长。是否有可能以某种方式重置它们（自动递增）？

Answer 1

我猜你正在使用 delete() in your safeDown() method. if you want to remove all data from the table, you should use truncateTable() or you can write your own slq with execute()。

Answer 2

尝试将 AUTO_INCREMENT 设置为 1

public function down()
{
    $this->delete('{{%email}}', ['id' => [1, 2, 3, 4, 5, 6, 7, 8, 9,]]);
    $this->execute('ALTER TABLE {{%email}} AUTO_INCREMENT = 1');
    // When you insert any other (not NULL or 0) value into an AUTO_INCREMENT column,
    // the column is set to that value and the sequence is reset so that the
    // next automatically generated value follows sequentially from the largest column value.
}

Yii2 在事务回滚时重置数据库 ID

Yii2 reset db ids when transaction rollback

transactions

rollback

yii2