Struct AddColumn 

pub struct AddColumn { /* private fields */ }

Declarative specification for adding a column in [UpdateSchemaAction].

Use helper constructors such as AddColumn::optional and AddColumn::required, optionally combined with [AddColumn::with_parent] and [AddColumn::with_doc], then pass the value to [UpdateSchemaAction::add_column].

Implementations

impl AddColumn

pub fn builder() -> AddColumnBuilder<((), (), (), (), (), (), ())>

Create a builder for building AddColumn. On the builder, call .parent(...)(optional), .name(...), .required(...)(optional), .field_type(...), .doc(...)(optional), .initial_default(...)(optional), .write_default(...)(optional) to set the values of the fields. Finally, call .build() to create the instance of AddColumn.

impl AddColumn

pub fn optional(name: impl ToString, field_type: Type) -> Self

Create a root-level optional column specification.

pub fn required( name: impl ToString, field_type: Type, initial_default: Literal, ) -> Self

Create a root-level required column specification.