7. 可以看到Variable_name有俩个变量,system_time_zone是指系统默认的时区,time_zone指当前时区。 可以看到系统默认时区为CST,而当前时区是system,也就是当前时区为系统默认时区,也就是当前时区为CST。 那么CST时区是什么呢? 修改mysql的时区 有俩种方式 命令行修改 set global time_zone = '+8:00'; ##修改m...
AI代码解释 mysql>show variables like'%explicit_defaults_for_timestamp%';+---+---+|Variable_name|Value|+---+---+|explicit_defaults_for_timestamp|OFF|+---+---+rowinset(0.00sec) 开发环境explicit_defaults_for_timestamp 的值是OFF 比对了下RDS中mysql的参数,发现这个参数值为0,因为rds中mysql...
| Variable_name | Value | +---+---+ | explicit_defaults_for_timestamp | OFF | +---+---+ row in set (0.00 sec) 1. 2. 3. 4. 5. 6. 7. 总结:timestamp有自动初始化和更新,当你update某条记录的时候,该列值会自动更新,这是和datatime最大的区别。 补充:DATETIME与TIMESTAMP的一些区别...
1 row in set (0.00 sec) 即 修改后,mysql session(会话) 需要重连,才会生效。 > SELECT TIME_TO_SEC(TIMEDIFF(NOW(), UTC_TIMESTAMP())); 28800 mysql> show variables like '%time_zone%'; +---+---+ | Variable_name | Value | +---+---+ | system_time_zone | | | time_zone | ...
mysql>show variables like'explicit%';+---+---+|Variable_name|Value|+---+---+|explicit_defaults_for_timestamp|OFF|+---+---+1rowinset(0.00sec) 我们创建一个测试表 test_t1,字段tsp为TIMESTAMP类型: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 mysql>CREATETABLEtest_t1(->tspTIMESTAM...
But this is not in human-readable form, as we cannot understand what is time by looking at this number. So, to make it human-readable form we'll follow the next method. 2) Using new Date() Method You can simply initialize this object without passing any value. This will return the ...
The following code shows how to create atimestampvariable in Bash: #!/bin/bash TIMESTAMP=$(date+%Y%m%d_%H%M%S) echo"Timestamp:$TIMESTAMP" In the above example, we first define the Bash script interpreter#!/bin/bash. Next, we create a variable calledTIMESTAMPusing the date command. The...
1 row in set (0.00 sec) 两者输出是一样的。 其次修改当前会话的时区 mysql> show variables like '%time_zone%'; +---+---+ | Variable_name | Value | +---+---+ | system_time_zone | CST | | time_zone | SYSTEM | +---+---+ 2 rows in set (0.00...
to script macros (VB or Java script defined in the script module). Note! A dollar-sign expansion is limited in how many macro expansions it can calculate. Any expansion over 1000 will not be calculated! Dollar-Sign Expansion Using a Variable When using a variable for text replacement in ...
| Variable_name | Value | +---+---+ | explicit_defaults_for_timestamp | OFF | +---+---+ mysql> create table t1 -> ( -> ts1 timestamp, -> ts2 timestamp, -> ts3 timestamp default '2010-01-01 00:00:00' -> ); Query OK, 0 rows...