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Code Issues 25 Releases Wiki Activity

[4.2.x] Fixed #34325 -- Corrected wording in PercentRank() docs.

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This is consistent with the terminology used for the percent_rank()
function in SQLite docs and PostgreSQL docs.

Backport of 7bb741d787 from main
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dennisvang 2023-02-10 12:11:31 +01:00 committed by Mariusz Felisiak
parent a0623b117c
commit 4a89aa25c9
1 changed files with 7 additions and 7 deletions
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14
docs/ref/models/database-functions.txt
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@ -1758,16 +1758,16 @@ 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
@ -1775,7 +1775,7 @@ 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``
--------