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Implement "COUNT expr BY (labels)" #172

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juliusv opened this Issue Apr 22, 2013 · 1 comment

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juliusv commented Apr 22, 2013

Currently we have a count() function which takes a vector expression and returns the count of vector elements as a scalar. We might want to change the function so that:

  • count returns a vector, with all labels being preserved that are common among the counted elements
  • count becomes an operator of the form COUNT expr BY (labels)

@ghost ghost assigned juliusv Apr 22, 2013

@juliusv juliusv referenced this issue May 8, 2013

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Support ``COUNT(expr) BY (facet)`` Aggregation #231

@juliusv juliusv closed this May 9, 2013

simonpasquier pushed a commit to simonpasquier/prometheus that referenced this issue Oct 12, 2017

@brian-brazil
Merge pull request prometheus#172 from prometheus/revert-166-patch-1 
Revert prometheus#166 and add explanation why the formula is in fact correct.
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