insert into test values (1,localtimestamp,localtimestamp); insert into test values (2,systimestamp,systimestamp); insert into test values (3,current_timestamp,current_timestamp); insert into test values (3,current_timestamp,current_timestamp); insert into test values(4,to_timestamp('2010-...
AI代码解释 $table->timestamp('created_at')->default(DB::raw('CURRENT_TIMESTAMP')); 以上这种用法适用于 Laravel 官方支持的所有数据库驱动器。 自Laravel 5.1.25 以后,可以使用 useCurrent() ,如下: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 $table->timestamp('created_at')->useCurrent(...
matteao 开发 @ 风了
【Mysql】Working with time zones, timestamps and datetimes in Laravel and MySQL 本文旨在揭开这些概念的神秘面纱,并就如何在 Laravel 应用程序和 MySQL 中以合理的方式处理日期和时区给出一些建议和最佳实践。...出现这种情况是因为在两个方向的转换中没有使用相同的时区。...Laravel 使用 Carbon 生成日期...
$table->timestamp("last_online_at")->useCurrent(); 接下来,我们希望 Laravel 将此属性识别为 Carbon 实例,以便我们可以利用其大量的日期和时间功能集。因此,在 User 模型类中,我们将其添加到 $casts 数组中: class User { protected $casts = ["last_online_at" => "datetime"]; } 为应用添加逻辑...
->useCurrent()Set TIMESTAMP columns to use CURRENT_TIMESTAMP as default value ->virtualAs($expression)Create a virtual generated column (MySQL) Modifying Columns Prerequisites Before modifying a column, be sure to add thedoctrine/dbaldependency to yourcomposer.jsonfile. The Doctrine DBAL library is...
->useCurrent()Set TIMESTAMP columns to use CURRENT_TIMESTAMP as default value ->virtualAs($expression)Create a virtual generated column (MySQL) ->generatedAs($expression)Create an identity column with specified sequence options (PostgreSQL)
MySQL converts TIMESTAMP values from the current time zone to UTC for storage, and back from UTC to the current time zone forretrieval. MySQL 会将 TIMESTAMP 值从当前时区转换到 UTC 以进行存储,并在检索时从 UTC 转换回当前时区。 (This does not occur for other types such as DATETIME.) By ...
('startTime', '开始日期');$grid->column('endTime', '结束日期');$grid->column('createtime', '创建时间')->formatTimestamp();$grid->actions(function ($actions) {// 去掉删除$actions->disableDelete();});return $grid;}/*** Make a show builder.** @param mixed $id* @return Show*...
应该是你的数据库中在update_at字段上设置了“On update Current_Timestamp”。