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Read/write mysql database
#61
(20.05.2020, 07:38)admin Wrote: Use this table structure for data. trend_id will be the same id as in LM.
Code:
CREATE TABLE `trends_data` (
  `trend_id` int(11) NOT NULL,
  `dt` datetime NOT NULL,
  `value` double DEFAULT NULL,
  PRIMARY KEY (`trend_id`,`dt`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

Updated script:
Code:
require('trends')
require('luasql.mysql')

env = luasql.mysql()
--DATABASE CONNECTION -> (DB_NAME, USERNAME, PASSWORD, MYSQL_SERVER_IP, MYSQL_SERVER_PORT)
dbcon, err = env:connect('CONFIDENTIAL', 'admin', 'CONFIDENTIAL', 'lm-database.CONFIDENTIAL.us-east-1.rds.amazonaws.com', 3306)

if dbcon then
  items = db:getall('SELECT id, name FROM trends')
  trends.NaN = 'NULL'

  dates = {
    ['start'] = os.date('*t'),
    ['end'] = os.date('*t'),
  }

  dates.start.day = dates.start.day - 1
  date = string.format('%04d-%02d-%02d',
    dates.start.year, dates.start.month, dates.start.day)

  for _, item in ipairs(items) do
    id = item.id
    data = trends.fetch(item.name, dates)

    values = {}

    if data and #data > 0 then
      step = 1440 / #data -- in minutes

      for i, val in ipairs(data) do
        mins = (i - 1) * step
        datetime = string.format('%s %02d:%02d:00',
          date, math.floor(mins / 60), mins % 60)

        values[ #values + 1 ] = string.format('(%d,"%s",%s)',
          id, datetime, tostring(val))
      end
    end

    if #values > 0 then
      query = 'INSERT INTO trends_data (trend_id, dt, value) VALUES ' .. table.concat(values, ',')
      dbcon:execute(query)
    end
  end

  dbcon:close()
else
  log('mysql connection failed ' .. tostring(err))
end
 
env:close()

Thank you! works perfect! 

If I want to have a second table called "trends_definition" with columns (trend_id, name) ? It was interesting that if I modify or create new trends the table updates the information.

I created a new table with this structure:


Code:
CREATE TABLE `trends_definition` (`trend_id` int(11) NOT NULL,`name` varchar(50) NOT NULL,PRIMARY KEY (`trend_id`)) ENGINE=InnoDB DEFAULT CHARSET=utf8;

Then I modified the your code to insert trend definitions in trends_definition table:


Code:
require('trends')
require('luasql.mysql')

env = luasql.mysql()
log (env)
--DATABASE CONNECTION -> (DB_NAME, USERNAME, PASSWORD, MYSQL_SERVER_IP, MYSQL_SERVER_PORT)
dbcon, err = env:connect('lm', 'admin', 'logicmachinedb', 'lm-database.cwn3btn5ug4v.us-east-1.rds.amazonaws.com', 3306)
log (dbcon, err)

if dbcon then
  items = db:getall('SELECT id, name FROM trends')
  trends.NaN = 'NULL'

  dates = {
    ['start'] = os.date('*t'),
    ['end'] = os.date('*t'),
  }

  dates.start.day = dates.start.day - 1
  date = string.format('%04d-%02d-%02d',
    dates.start.year, dates.start.month, dates.start.day)
  log (date)
 
  for _, item in ipairs(items) do
    id = item.id
    data = trends.fetch(item.name, dates)

    values = {}

    if data and #data > 0 then
      step = 1440 / #data -- in minutes

      for i, val in ipairs(data) do
        mins = (i - 1) * step
        datetime = string.format('%s %02d:%02d:00',
          date, math.floor(mins / 60), mins % 60)

        values[ #values + 1 ] = string.format('(%d,"%s",%s)',
          id, datetime, tostring(val))
      end
    end

    if #values > 0 then
      log (values)
      query = 'INSERT INTO trends_data (trend_id, dt, value) VALUES ' .. table.concat(values, ',')
      dbcon:execute(query)
    end
  end

  -----------trends_definition--------------
 
  for _, item in ipairs(items) do
    id = item.id
    name = item.name
    query = 'INSERT INTO trends_definition (trend_id,name) VALUES (id,name)' 
    dbcon:execute(query)
  end 
 
  -------------------------------------------
 
  dbcon:close()
else
  log('mysql connection failed ' .. tostring(err))
end
  
env:close()


But the query doesn't works Huh
Reply


Messages In This Thread
Read/write mysql database - by gjniewenhuijse - 14.01.2016, 09:49
RE: Read/write mysql database - by admin - 14.01.2016, 10:03
RE: Read/write mysql database - by RSV4 - 20.03.2016, 10:33
RE: Read/write mysql database - by admin - 21.03.2016, 06:59
RE: Read/write mysql database - by RSV4 - 21.03.2016, 09:59
RE: Read/write mysql database - by admin - 11.10.2016, 10:24
RE: Read/write mysql database - by g2g2g2 - 02.11.2016, 13:40
RE: Read/write mysql database - by g2g2g2 - 08.11.2016, 08:23
RE: Read/write mysql database - by admin - 08.11.2016, 08:26
RE: Read/write mysql database - by RSV4 - 06.12.2016, 23:08
RE: Read/write mysql database - by admin - 07.12.2016, 07:12
RE: Read/write mysql database - by RSV4 - 07.12.2016, 08:45
RE: Read/write mysql database - by admin - 07.12.2016, 09:09
RE: Read/write mysql database - by RSV4 - 07.12.2016, 09:27
RE: Read/write mysql database - by RSV4 - 18.12.2016, 00:05
RE: Read/write mysql database - by RSV4 - 18.12.2016, 07:58
RE: Read/write mysql database - by RSV4 - 18.12.2016, 10:28
RE: Read/write mysql database - by RSV4 - 11.01.2017, 23:19
RE: Read/write mysql database - by admin - 12.01.2017, 09:48
RE: Read/write mysql database - by RSV4 - 12.01.2017, 18:50
RE: Read/write mysql database - by FatMax - 17.02.2017, 12:45
RE: Read/write mysql database - by yeuwoo - 14.03.2017, 03:16
RE: Read/write mysql database - by admin - 14.03.2017, 06:53
RE: Read/write mysql database - by Thomas - 14.03.2017, 14:34
RE: Read/write mysql database - by admin - 05.09.2017, 13:50
RE: Read/write mysql database - by admin - 07.09.2017, 14:47
RE: Read/write mysql database - by pentadom - 18.11.2019, 16:54
RE: Read/write mysql database - by Daniel - 19.11.2019, 08:28
RE: Read/write mysql database - by pentadom - 19.11.2019, 09:37
RE: Read/write mysql database - by admin - 19.11.2019, 09:49
RE: Read/write mysql database - by pentadom - 19.11.2019, 10:22
RE: Read/write mysql database - by admin - 19.11.2019, 12:06
RE: Read/write mysql database - by pentadom - 19.11.2019, 12:23
RE: Read/write mysql database - by admin - 19.11.2019, 14:07
RE: Read/write mysql database - by pentadom - 19.11.2019, 19:12
RE: Read/write mysql database - by admin - 20.11.2019, 07:47
RE: Read/write mysql database - by pentadom - 17.05.2020, 08:18
RE: Read/write mysql database - by pentadom - 17.05.2020, 14:57
RE: Read/write mysql database - by Daniel - 18.05.2020, 07:38
RE: Read/write mysql database - by pentadom - 18.05.2020, 07:55
RE: Read/write mysql database - by admin - 18.05.2020, 07:50
RE: Read/write mysql database - by admin - 18.05.2020, 07:58
RE: Read/write mysql database - by pentadom - 18.05.2020, 08:01
RE: Read/write mysql database - by Daniel - 18.05.2020, 08:06
RE: Read/write mysql database - by pentadom - 18.05.2020, 08:08
RE: Read/write mysql database - by pentadom - 19.05.2020, 16:08
RE: Read/write mysql database - by admin - 20.05.2020, 07:38
RE: Read/write mysql database - by pentadom - 20.05.2020, 16:27

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