Struct datafusion_expr::function::StateFieldsArgs

pub struct StateFieldsArgs<'a> {
    pub name: &'a str,
    pub input_types: &'a [DataType],
    pub return_type: &'a DataType,
    pub ordering_fields: &'a [Field],
    pub is_distinct: bool,
}

StateFieldsArgs contains information about the fields that an aggregate function’s accumulator should have. Used for AggregateUDFImpl::state_fields.

Fields

name: &'a str

The name of the aggregate function.

input_types: &'a [DataType]

The input types of the aggregate function.

return_type: &'a DataType

The return type of the aggregate function.

ordering_fields: &'a [Field]

The ordering fields of the aggregate function.

is_distinct: bool

Whether the aggregate function is distinct.