SqlSelection<T> class abstract interface

One typed column selected from a SQL result.

A selection keeps its physical source column separate from its result codec. This lets a LEFT JOIN decode a non-nullable schema column as an optional result without weakening INSERT and UPDATE types.

Implementers

• SqlTableColumn

Available extensions

• SqlSelectionModifiers

Properties

hashCode → int

The hash code for this object.

no setter, inherited

optional → SqlSelection<T?>

Available on SqlSelection<T>, provided by the SqlSelectionModifiers extension

Decodes SQL NULL as null, typically for the right side of a LEFT JOIN.

no setter

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

as(String alias) → SqlSelection<T>

Available on SqlSelection<T>, provided by the SqlSelectionModifiers extension

Gives this result column an explicit SQL alias.

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

read(SqlRow row, int index) → T

Decodes this selection from a raw transport row at index.

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited