If you store a TIMESTAMP value, and then change the time zone and retrieve the value, the retrieved value is different from the value you stored. This occurs because the same time zone was not used for conversion in both directions. The current time zone is available as...
In order to understand how the timestamp conversions work we first need to know what’s meant bycurrent time zone. 要了解时间戳转换的工作原理,我们首先需要了解当前时区的含义。 In short,current time zoneis the value of the SESSION time_zone. By default this is the SYSTEM time of the server...
In order to understand how the timestamp conversions work we first need to know what’s meant bycurrent time zone. 要了解时间戳转换的工作原理,我们首先需要了解当前时区的含义。 In short,current time zoneis the value of the SESSION time_zone. By default this is the SYSTEM time of the server...
mysql>createtablets(tstimestamp);mysql>insertintotsvalues(now());mysql>select*fromts;+---+|ts|+---+|2022-08-3014:13:02|+---+ 那么另一个处于东四区的客户端C2连接后它的时区仍然是SYSTEM东八区,这样这个客户端查询存储的时间是有问题的: 代码语言:sql AI代码解释 mysql>select*fromts;+---+...
如果mysql的time_zone变量是SYSTEM,而system_time_zone是CST的值,system_time_zone的CST这个字符串会造成bug。mysql jdbc mysql的jdbc驱动的代码里会设置时区,这个时区是通过 TimeZone.getTimeZone(canonicalTimezone) 读取,其中 canonicalTimezone 是字符串, TimeZone.getTimeZone("CST") 返回-6时区,即美国的时区。
--+ | system_time_zone | CST | | time_zone | SYSTEM | +---+---+ CREATE TABLE `t5` ( `id` int DEFAULT NULL, `dt1` datetime DEFAULT NULL, `dt2` timestamp NULL DEFAULT NULL ) ENGINE=InnoDB; insert into t5(id,dt1,dt2) values(1,now(),now()); 先简单说明一下参数值: system...
SQL> create table t (d1 date, d2 timestamp, d3 timestamp with time zone); Table created SQL> insert into t values (systimestamp, systimestamp, systimestamp); 1 row inserted SQL> commit; Commit complete SQL> select * from t; ...
SQL>create table timezone_test(t0 timestamp,t1 timestamp with time zone,t2 timestamp with local time zone); Table created. SQL>insert into timezone_test select current_timestamp,current_timestamp,current_timestamp from dual; 1 row created. ...
SET SESSION time_zone = '+02:00';INSERT INTO timestamp_test VALUES ('1970-01-01 03:00:00'); Check that the value got stored: 检查数值是否已存储: SELECT * FROM timestamp_test; We’ll see: 我们拭目以待: +---+| timestamp |+---+| 1970-01-01 03:00:00 |+---+ Schematic re...
1.容灾备份恢复必备条件 MySQL 数据库开启了log-bin参数记录binlog日志功能,且主库于备份的从库都要开启binlo功能。