Module datafusion::functions_aggregate::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 [$UDAF]
• regr_avgy
  Compute a linear regression of type RegrType::AvgY
• regr_avgy_udaf
  AggregateFunction that returns a AggregateUDF for [$UDAF]
• regr_count
  Compute a linear regression of type RegrType::Count
• regr_count_udaf
  AggregateFunction that returns a AggregateUDF for [$UDAF]
• regr_intercept
  Compute a linear regression of type RegrType::Intercept
• regr_intercept_udaf
  AggregateFunction that returns a AggregateUDF for [$UDAF]
• regr_r2
  Compute a linear regression of type RegrType::R2
• regr_r2_udaf
  AggregateFunction that returns a AggregateUDF for [$UDAF]
• regr_slope
  Compute a linear regression of type RegrType::Slope
• regr_slope_udaf
  AggregateFunction that returns a AggregateUDF for [$UDAF]
• regr_sxx
  Compute a linear regression of type RegrType::SXX
• regr_sxx_udaf
  AggregateFunction that returns a AggregateUDF for [$UDAF]
• regr_sxy
  Compute a linear regression of type RegrType::SXY
• regr_sxy_udaf
  AggregateFunction that returns a AggregateUDF for [$UDAF]
• regr_syy
  Compute a linear regression of type RegrType::SYY
• regr_syy_udaf
  AggregateFunction that returns a AggregateUDF for [$UDAF]