Laravel5 database Table Establishment problem

I followed @jellybool's video to learn.
The following command is run on the cmd command line.

PHP Artisan make:migration create_articles_table--create=articles

And then write the following code in the 2015_10_23_022143_create_articles_table.php.

Public function up ()    {        schema::create (' articles ', function (Blueprint $table) {            $table->increments (' Id ');            $table->string (' title ');            $table->text (' content ');            $table->timestamps (' published_at ');            $table->timestamps ();        });    }

Then run on the cmd to pop the error, the database is not displayed articles , where the field is duplicated?

d:\laravel>php Artisan Migrate  [illuminate\database\queryexception]  SQLSTATE[42S21]: Column already exists:1060 Duplicate column name ' Created  _at ' (sql:create table ' articles ' (' id ' int unsigned NOT NULL Auto_increm E  NT primary key, ' title ' varchar (255) Not NULL, ' content ' text is not NULL, ' CR  eated_at ' timestamp default 0 not Nu ll, ' updated_at ' timestamp default 0 no  t null, ' CREATED_AT ' timestamp default 0 NOT NULL, ' Updated_at ' timestamp d
  efault 0 NOT NULL) default character set UTF8 collate utf8_unicode_ci)  [pdoexception]  SQLSTATE[42S21]: Column A Lready exists:1060 Duplicate column name ' Created  _at '

Reply content:

I followed @jellybool's video to learn.
The following command is run on the cmd command line.

PHP Artisan make:migration create_articles_table--create=articles

And then write the following code in the 2015_10_23_022143_create_articles_table.php.

Public function up ()    {        schema::create (' articles ', function (Blueprint $table) {            $table->increments (' Id ');            $table->string (' title ');            $table->text (' content ');            $table->timestamps (' published_at ');            $table->timestamps ();        });    }

Then run on the cmd to pop the error, the database is not displayed articles , where the field is duplicated?

d:\laravel>php Artisan Migrate  [illuminate\database\queryexception]  SQLSTATE[42S21]: Column already exists:1060 Duplicate column name ' Created  _at ' (sql:create table ' articles ' (' id ' int unsigned NOT NULL Auto_increm E  NT primary key, ' title ' varchar (255) Not NULL, ' content ' text is not NULL, ' CR  eated_at ' timestamp default 0 not Nu ll, ' updated_at ' timestamp default 0 no  t null, ' CREATED_AT ' timestamp default 0 NOT NULL, ' Updated_at ' timestamp d
  efault 0 NOT NULL) default character set UTF8 collate utf8_unicode_ci)  [pdoexception]  SQLSTATE[42S21]: Column A Lready exists:1060 Duplicate column name ' Created  _at '

Well, finally, it's my carelessness.

$table->timestamps (' published_at '); should be changed to $table->timestamp (' published_at ');

Timestamps () differs from timestamp (). The former is a Laravel used to manage the creation and modification of methods as Created_at and updated_at timestamp columns. So the following method is repeated, causing the problem of field duplication

Landlord, I execute PHP artisan migrate
When you fail, how can you execute success
[Pdoexception]
SQLSTATE[HY000] [1045] Access denied for user ' root ' @ ' localhost ' (using pas
Sword:yes)

The 5.1 version of the. evn file that I used is modified as follows:
db_host=127.0.0.1
Db_database=homestead
Db_username=root
Db_password=secret
Execute the above sentence on the error.

