Merge pull request #274 from fangpanpan/master

alter_examples_bash

tests/examples/bash/demo.csv

-1503851026421, 1
-1503851026422, 2
-1503851026423, 3
-1503851026424, 4
-1503851026425, 5
-
-'2019-07-22 10:00:01.000', 6
-'2019-07-22 10:00:02.000', 7
-'2019-07-22 10:01:02.000', 8
-'2019-07-22 11:01:02.000', 9
-'2019-07-23 11:01:02.000', 10
+1503851026421, 220, 1.10
+1503851026422, 221, 1.20
+1503851026423, 219, 1.09
+1503851026424, 222, 1.11
+1503851026425, 220, 1.08
+'2019-07-22 10:00:01.000', 219, 1.06
+'2019-07-22 10:00:02.000', 218, 1.04
+'2019-07-22 10:01:02.000', 220, 1.12
+'2019-07-22 11:01:02.000', 221, 1.11
+'2019-07-23 11:01:02.000', 220, 1.09

tests/examples/bash/demo.sql

 create database if not exists db0
-create table if not exists db0.tb0 (ts timestamp, field int)
+create table if not exists db0.tb0 (ts timestamp, voltage int, current float)
 import into db0.tb0 file demo.csv
 
+
 create database if not exists db1
 use db1
-create table if not exists tb1 (ts timestamp, name binary(8))
-insert into tb1 values('2010-07-23 11:01:02.000', 'xxxx')
-insert into tb1 values(now, 'aaaa');    
-insert into tb1 values(now+1a, 'bbbb'); 
-insert into tb1 values(now+1s, 'cccc'); 
-insert into tb1 values(now+1m, 'dddd'); 
-insert into tb1 values(now+1h, 'eeee'); 
-insert into tb1 values(now+1d, 'ffff'); 
-insert into tb1 values(now+1w, 'gggg');
-insert into tb1 values(now+1n, 'hhhh');
-insert into tb1 values(now+1y, 'iiii');
+create table if not exists tb1 (ts timestamp, temperature int, humidity float)
+insert into tb1 values('2010-07-23 11:01:02.000', 37, 50.1)
+insert into tb1 values(now, 36, 47.8);    
+insert into tb1 values(now+1a, 38, 65.3); 
+insert into tb1 values(now+1s, 38, 53.9 ); 
+insert into tb1 values(now+1m, 37, 45.6); 
+insert into tb1 values(now+1h, 35, 41.1);