@@ -1700,7 +1700,7 @@ class Aggregate expr1 expr2 aggr
1701 :: expr1 (nullity ty)
1701 :: expr1 (nullity ty)
1702 -> aggr (nullity (PGAvg ty))
1702 -> aggr (nullity (PGAvg ty))
1704 -- | sample variance of the input values
1704 -- | sample variance of the input values
1705 -- (square of the sample standard deviation)
1705 -- (square of the sample standard deviation)