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Diffstat (limited to 'python/pyspark/sql/functions.py')
| -rw-r--r-- | python/pyspark/sql/functions.py | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/python/pyspark/sql/functions.py b/python/pyspark/sql/functions.py index e98979533f..41dfee9f54 100644 --- a/python/pyspark/sql/functions.py +++ b/python/pyspark/sql/functions.py @@ -530,9 +530,10 @@ def lead(col, count=1, default=None): @since(1.4) def ntile(n): """ - Window function: returns a group id from 1 to `n` (inclusive) in a round-robin fashion in - a window partition. Fow example, if `n` is 3, the first row will get 1, the second row will - get 2, the third row will get 3, and the fourth row will get 1... + Window function: returns the ntile group id (from 1 to `n` inclusive) + in an ordered window partition. Fow example, if `n` is 4, the first + quarter of the rows will get value 1, the second quarter will get 2, + the third quarter will get 3, and the last quarter will get 4. This is equivalent to the NTILE function in SQL. |