Created question in FIWARE Q/A platform on 22-05-2015 at 16:05
Please, ANSWER this question AT http://stackoverflow.com/questions/30398783/how-to-balance-out-row-mode-and-column-mode-in-cygnus

Question:
How to balance out row mode and column mode in cygnus?

Description:
I have a weather-station that transmits data each hour. During that hour it makes four recordings (one every 15 minutes). In my current situation I am using attr_persistence=row to store data in my MySql database.

With row mode I get the default generated columns:

recvTimeTs | recvTime | entityId | entityType | attrName | attrType | attrValue | attrMd

But my weather station sends me the following data:

timeRecorded 14:30:0,22.5.2015
measurement1 18.799
measurement2 94.0
measurement3 1.19

These attrValue are represented in the database as string.

Is there a way to leave the three measurements in row mode and switch the timeRecorded to column mode? And if not, then what is my alternative?

The point of all this is to query the time recorded value, but I cannot query date as long as it is string.

As a side note: having the weather station send the data as soon as it is recorded (every 15 minutes) is out of the question, firstly because I need to conserve battery power and more importantly because in the case of a problem with the post, it will send all of the recordings at once.

So if an entire day went without sending any data, the weather station will send all 24*4 readings at once...