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How can I achieve the following result (in column "output", string) in QGIS attribute table?

enter image description here

The values in "duration" were calculated with some other formulas and represent a certain time duration given in double data type. So 2.584 actually means 2 hours and 0.584 hours (=35 minutes).

Is there a way/expression to get the "output" column directly from the "duration" column in QGIS Field Calculator?

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Try something like:

concat(to_string(floor(duration)),':',to_string(round((duration*60) % 60, 0)))
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  • 2
    Please ask it as a new question. Do not forget to include an error that you got.
    – Taras
    Nov 8 '20 at 20:15

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