From d3438e8a805693111abf06d46cc72b695d9bb835 Mon Sep 17 00:00:00 2001
From: Maxton Huff <maxton.huff@molecula.com>
Date: Wed, 24 Mar 2021 10:58:47 -0500
Subject: [PATCH] correct k calculation and change test nth values

---
 executor.go      | 2 +-
 executor_test.go | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/executor.go b/executor.go
index a97d74871..0302c0c9b 100644
--- a/executor.go
+++ b/executor.go
@@ -1365,7 +1365,7 @@ func (e *executor) executePercentile(ctx context.Context, qcx *Qcx, index string
 		rangeCall = intersectCall.Children[0]
 	}
 
-	k := (1 - nth) / nth
+	k := (100 - nth) / nth
 
 	min, max := minVal.Val, maxVal.Val
 	// estimate nth val, eg median when nth=0.5
diff --git a/executor_test.go b/executor_test.go
index 2f07b82f9..40e606c35 100644
--- a/executor_test.go
+++ b/executor_test.go
@@ -7127,7 +7127,7 @@ func variousQueriesOnPercentiles(t *testing.T, c *test.Cluster) {
 	}
 
 	// generate test cases per each nth argument
-	nths := []float64{0.0, 10, 25, 50, 75, 90, 99.99}
+	nths := []float64{0.0, 10, 25, 50, 75, 90, 99}
 	var tests []testCase
 	for _, nth := range nths {
 		query := fmt.Sprintf(`Percentile(field="net_worth", filter=Row(val="foo"), nth=%f)`, nth)