Vertica OLAP Analytic Function Support
TDV supports the Vertica OLAP analytic functions shown in the table below. These analytic functions are supported in pass-through mode.
Each of these functions returns the same number of rows as the input. These functions operate on groups of rows defined by frame clauses and window partitioning rather than by a GROUP BY clause.
|
Vertica OLAP Analytic Function |
Notes |
|
AVG |
|
|
COUNT |
|
|
CUME_DIST |
|
|
DENSE_RANK |
|
|
EXPONENTIAL_MOVING_AVERAGE |
|
|
FIRST_VALUE |
|
|
LAG |
|
|
LAST_VALUE |
|
|
LEAD |
|
|
MAX |
|
|
MEDIAN |
|
|
MIN |
|
|
NTILE |
|
|
PERCENT_RANK |
|
|
PERCENTILE_CONT |
|
|
PERCENTILE_DISC |
|
|
RANK |
|
|
ROW_NUMBER |
|
|
STDDEV |
|
|
STDDEV_POP |
|
|
STDDEV_SAMP |
|
|
SUM |
|
|
VAR_POP |
|
|
VAR_SAMP |
|
|
VARIANCE |
|