Struct AlterTableBuilder 

pub struct AlterTableBuilder { /* private fields */ }

Collects changes inside alter_table. Each change is applied as its own ALTER TABLE statement, so this works uniformly across backends (including SQLite, which permits only one alteration per statement).

Implementations

impl AlterTableBuilder

pub fn add_column( &mut self, name: &str, f: impl FnOnce(&mut ColumnDef), ) -> &mut ColumnDef

add_column :name — f configures the column type and modifiers. The returned &mut ColumnDef allows further chaining.

pub fn drop_column(&mut self, name: &str)

drop_column :name.

pub fn rename_column(&mut self, from: &str, to: &str)

rename_column :from, :to.