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datafusion::functions_aggregate::stddev - Rust
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datafusion::functions_aggregate

Module stddev

Source
Expand description

Defines physical expressions that can evaluated at runtime during query execution

Structs§

Stddev
STDDEV and STDDEV_SAMP (standard deviation) aggregate expression
StddevAccumulator
An accumulator to compute the average
StddevGroupsAccumulator
StddevPop
STDDEV_POP population aggregate expression

Functions§

stddev
Compute the standard deviation of a set of numbers
stddev_pop
Compute the population standard deviation of a set of numbers
stddev_pop_udaf
AggregateFunction that returns a AggregateUDF for StddevPop
stddev_udaf
AggregateFunction that returns a AggregateUDF for Stddev