2017년 1월 16일 월요일

adding numbers


is it possible to connect different devices via a main server, and each time, when you press a specific button on one of these devices, a number, +1 bigger than the one, picked by another device before, is shown?

thanks for fast support

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this is not trivial, because several people could press the button at the same time, so all solutions, which first read the maximum value and then add 1 will not work reliably

you could use a fusiontable, but you have to use INSERT statements only, for example after each button click a row will be inserted into the table
to get the number of rows (i.e. the number of button clicks), just send a SELECT statement to the table like this
SELECT count(*) FROM <tableid>

do the Pizza Party tutorial to learn how to work with fusiontables

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nice thanks 
i´ll try

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