Redshift Analytical Function Support
TDV supports the analytical functions listed in the table below for Redshift.
|
Redshift Analytical Function |
Notes |
|
AVG |
DISTINCT and ALL supported. |
|
COUNT |
DISTINCT and ALL supported. BLOB not supported. |
|
FIRST_VALUE |
IGNORENULLS and RESPECTNULLS supported. |
|
LAG |
IGNORENULLS and RESPECTNULLS supported. |
|
LAST_VALUE |
IGNORENULLS and RESPECTNULLS supported. |
|
LEAD |
IGNORENULLS and RESPECTNULLS supported. |
|
MAX |
DISTINCT and ALL supported. |
|
MIN |
DISTINCT supported. |
|
SUM |
DISTINCT and ALL supported. |
|
VARIANCE |
DISTINCT and ALL supported. Maps to VAR_SAMP. |