CalculationMethod<T> class abstract

Implementers

• QueryMethod

Constructors

CalculationMethod()

Properties

hashCode → int

The hash code for this object.

no setter, inherited

ids → Future<List>

ids gets id list of a table

no setter

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

average(String column) → Future<double?>

average average of a num column

count([String column = '*']) → Future<int?>

count count of all num column

maximum(String column) → Future

maximum gets maximum value of a num column in table

minimum(String column) → Future

minimum gets minimum value of a num column in table

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

pick(List<String> columns) → Future<List>

pick pick

pluck(List<String> columns) → Future<List>

pluck pluck

sum(String column) → Future<int?>

sum gets sum value of a num column in table

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited