Module regr 

Defines physical expressions that can evaluated at runtime during query execution

Structs

Regr

RegrAccumulator

RegrAccumulator is used to compute linear regression aggregate functions by maintaining statistics needed to compute them in an online fashion.

Enums

RegrType

Functions

regr_avgx

Compute a linear regression of type RegrType::AvgX

regr_avgx_udaf

AggregateFunction that returns a AggregateUDF for regr_avgx

regr_avgy

Compute a linear regression of type RegrType::AvgY

regr_avgy_udaf

AggregateFunction that returns a AggregateUDF for regr_avgy

regr_count

Compute a linear regression of type RegrType::Count

regr_count_udaf

AggregateFunction that returns a AggregateUDF for regr_count

regr_intercept

Compute a linear regression of type RegrType::Intercept

regr_intercept_udaf

AggregateFunction that returns a AggregateUDF for regr_intercept

regr_r2

Compute a linear regression of type RegrType::R2

regr_r2_udaf

AggregateFunction that returns a AggregateUDF for regr_r2

regr_slope

Compute a linear regression of type RegrType::Slope

regr_slope_udaf

AggregateFunction that returns a AggregateUDF for regr_slope

regr_sxx

Compute a linear regression of type RegrType::SXX

regr_sxx_udaf

AggregateFunction that returns a AggregateUDF for regr_sxx

regr_sxy

Compute a linear regression of type RegrType::SXY

regr_sxy_udaf

AggregateFunction that returns a AggregateUDF for regr_sxy

regr_syy

Compute a linear regression of type RegrType::SYY

regr_syy_udaf

AggregateFunction that returns a AggregateUDF for regr_syy