Fixed -- Corrected wording in PercentRank() docs.
This is consistent with the terminology used for the percent_rank()
function in SQLite docs and PostgreSQL docs.
@@ -1738,16 +1738,16 @@ more frequently.
.. class:: PercentRank(*expressions, **extra)
-Computes the percentile rank of the rows in the frame clause. This
-computation is equivalent to evaluating::
+Computes the relative rank of the rows in the frame clause. This computation is
+equivalent to evaluating::
(rank - 1) / (total rows - 1)
-The following table explains the calculation for the percentile rank of a row:
+The following table explains the calculation for the relative rank of a row:
-===== ===== ==== ============ ============
-Row # Value Rank Calculation Percent Rank
-===== ===== ==== ============ ============
+===== ===== ==== ============ =============
+Row # Value Rank Calculation Relative Rank
+===== ===== ==== ============ =============
1 15 1 (1-1)/(7-1) 0.0000
2 20 2 (2-1)/(7-1) 0.1666
3 20 2 (2-1)/(7-1) 0.1666
@@ -1755,7 +1755,7 @@ Row # Value Rank Calculation Percent Rank
5 30 5 (5-1)/(7-1) 0.6666
6 30 5 (5-1)/(7-1) 0.6666
7 40 7 (7-1)/(7-1) 1.0000
-===== ===== ==== ============ ============
+===== ===== ==== ============ =============
``Rank``
--------
