Question

public function up()
    {
        Schema::create('materials', function (Blueprint $table) {
            $table->increments('id');
            $table->string('name',60);
            $table->integer('category_id',10);
            $table->integer('low_bulk',10);
            $table->integer('high_bulk',10);
            $table->integer('order_level',10);
            $table->decimal('unit_price',10,2);
            $table->string('description');
            $table->timestamps();
        });
    }

此架构给我以下错误

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

谁能告诉我该更改什么？

Answer 1

integer()的第二个参数不是长度，而是列是否应自动递增。 PHP将10转换为true，并尝试使所有这些列自动递增。

只需删除它，该长度对MySQL无效：

Schema::create('materials', function (Blueprint $table) {
    $table->increments('id');
    $table->string('name',60);
    $table->integer('category_id');
    $table->integer('low_bulk');
    $table->integer('high_bulk');
    $table->integer('order_level');
    $table->decimal('unit_price',10,2);
    $table->string('description');
    $table->timestamps();
});

Answer 2

像这样再试一次。

 public function up()
        {
            Schema::create('materials', function (Blueprint $table) {
                $table->increments('id');
                $table->string('name',60);
                $table->integer('category_id);
                $table->integer('low_bulk');
                $table->integer('high_bulk');
                $table->integer('order_level');
                $table->decimal('unit_price',10,2);
                $table->string('description');
                $table->timestamps();
            });
        }

有关更多详细信息，请参阅this。

Laravel数据库迁移表定义不正确

2 个答案: