Module datafusion_expr::function
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Function module contains typing and signature for built-in and user defined functions.
Type Aliases§
- Factory that returns an accumulator for the given aggregate, given its return datatype.
- Factory that creates a PartitionEvaluator for the given window function
- Factory that returns the functions’s return type given the input argument types
- Scalar function
- Factory that returns the types used by an aggregator to serialize its state, given its return datatype.