collaboration • Code Review Videos! • clocks, clock_cast, leap_seconds (https://youtu.be/WX3OmVu4lAs) • time_zone and time_zone_link (https://youtu.be/MODhhr7m-5s) • system_clock::now(), file_clock, leap second be added to the library: • tzdb • tzdb_list • time_zone • zoned_time • time_zone_link • ambiguous_local_time • nonexistent_local_time • …37 time_zone • Represents a “time zone” and all time zone transitions zone, whether it is during “daylight saving”, etc.38 zoned_time • Represents a pairing of a time_zone and a time_point (so a specific point in time in the context of a particular time zone). •

作用域 说明 autocommit GLOBAL \ SESSION 是否自动 Commit 事务 sql_mode GLOBAL \ SESSION 支持部分 MySQL SQL mode， time_zone GLOBAL \ SESSION 数据库所使用的时区 tx_isolation GLOBAL \ SESSION 事务隔离级别 系统变量 设置系统变量 全局范围值 会话范围值 TiDB 支持的 时区 TiDB 使用的时区由 time_zone 全局变量和 session 变量决定。 time_zone 的初始值是机器当前的系统时区 ‘SYSTEM’ 。 在运行过程中可以修改全局时区： 1. mysql> SET GLOBAL time_zone = timezone; TiDB 还可以通过设置 session 变量 time_zone 为每个连接维护各自的时区。默认条件下，这个值取的是全局 为每个连接维护各自的时区。默认条件下，这个值取的是全局 变量 time_zone 的值。修改 session 使用的时区： 1. mysql> SET time_zone = timezone; 查看当前使用的时区的值： 1. mysql> SELECT @@global.time_zone, @@session.time_zone; 设置 time_zone 的值的格式： ‘SYSTEM’ 表明使用系统时间 相对于 UTC

will be created automatically when it is needed. While you’re editing mysite/settings.py, set TIME_ZONE to your time zone. Also, note the INSTALLED_APPS setting at the top of the file. That holds the created the question in Tutorial 1, it probably means you forgot to set the correct value for the TIME_ZONE setting. Change it, reload the page and check that the correct value appears. Change the “Date slightly depending on what questions you already created. You might get unexpected results if your TIME_ZONE in settings.py isn’t correct. If you don’t remember setting it earlier, check it before continuing

will be created automatically when it is needed. While you’re editing mysite/settings.py, set TIME_ZONE to your time zone. Also, note the INSTALLED_APPS setting at the top of the file. That holds the created the question in Tutorial 1, it probably means you forgot to set the correct value for the TIME_ZONE setting. Change it, reload the page and check that the correct value appears. Change the “Date slightly depending on what questions you already created. You might get unexpected results if your TIME_ZONE in settings.py isn’t correct. If you don’t remember setting it earlier, check it before continuing

will be created automatically when it is needed. While you’re editing mysite/settings.py, set TIME_ZONE to your time zone. Also, note the INSTALLED_APPS setting at the top of the file. That holds the created the question in Tutorial 1, it probably means you forgot to set the correct value for the TIME_ZONE setting. Change it, reload the page and check that the correct value appears. Change the “Date slightly depending on what questions you already created. You might get unexpected results if your TIME_ZONE in settings.py isn’t correct. If you don’t remember setting it earlier, check it before continuing

will be created automatically when it is needed. While you’re editing mysite/settings.py, set TIME_ZONE to your time zone. Also, note the INSTALLED_APPS setting at the top of the file. That holds the created the question in Tutorial 1, it probably means you forgot to set the correct value for the TIME_ZONE setting. Change it, reload the page and check that the correct value appears. Change the “Date slightly depending on what questions you already created. You might get unexpected results if your TIME_ZONE in settings.py isn’t correct. If you don’t remember setting it earlier, check it before continuing

will be created automatically when it is needed. While you’re editing mysite/settings.py, set TIME_ZONE to your time zone. Also, note the INSTALLED_APPS setting at the top of the file. That holds the created the question in Tutorial 1, it probably means you forgot to set the correct value for the TIME_ZONE setting. Change it, reload the page and check that the correct value appears. Change the “Date slightly depending on what questions you already created. You might get unexpected results if your TIME_ZONE in settings.py isn’t correct. If you don’t remember setting it earlier, check it before continuing

will be created automatically when it is needed. While you’re editing mysite/settings.py, set TIME_ZONE to your time zone. Also, note the INSTALLED_APPS setting at the top of the file. That holds the created the question in Tutorial 1, it probably means you forgot to set the correct value for the TIME_ZONE setting. Change it, reload the page and check that the correct value appears. Change the “Date slightly depending on what questions you already created. You might get unexpected results if your TIME_ZONE in settings.py isn’t correct. If you don’t remember setting it earlier, check it before continuing

will be created automatically when it is needed. While you’re editing mysite/settings.py, set TIME_ZONE to your time zone. Also, note the INSTALLED_APPS setting at the top of the file. That holds the created the question in Tutorial 1, it probably means you forgot to set the correct value for the TIME_ZONE setting. Change it, reload the page and check that the correct value appears. Change the “Date slightly depending on what questions you already created. You might get unexpected results if your TIME_ZONE in settings.py isn’t correct. If you don’t remember setting it earlier, check it before continuing

will be created automatically when it is needed. While you’re editing mysite/settings.py, set TIME_ZONE to your time zone. Also, note the INSTALLED_APPS setting at the top of the file. That holds the created the question in Tutorial 1, it probably means you forgot to set the correct value for the TIME_ZONE setting. Change it, reload the page and check that the correct value appears. Change the “Date slightly depending on what questions you already created. You might get unexpected results if your TIME_ZONE in settings.py isn’t correct. If you don’t remember setting it earlier, check it before continuing