adb logcat -c
Usage: logcat [options] [filterspecs]
options include:
-s Set default filter to silent.
Like specifying filterspec '*:S'
-f <filename> Log to file. Default is stdout
-r <kbytes> Rotate log every kbytes. Requires -f
-n <count> Sets max number of rotated logs to <count>, default 4
-v <format> Sets the log print format, where <format> is:
brief color long printable process raw tag thread
threadtime time usec
-D print dividers between each log buffer
-c clear (flush) the entire log and exit
end //call 函数名（） 通过函数名调用存储过程创建存储过程有参语法：delimiter //
create procedure 函数名（in 参数名 参数类型，out 参数名 参数类型）
begin
end //call 函数名
1、数据构成
INSERT cpu_load_short,host=server01,region=us-west value=0.64,value2=0.86 1434055562000000000
第一部分：“cpu_load_short,host=server01,region=us-west”
第一部分称为key，key中包含了measurement n
