Struct Column 

pub struct Column { /* private fields */ }

A column being defined.

Implementations

impl Column

pub fn nullable(&mut self) -> &mut Self

Allow NULL. Columns are NOT NULL by default, which is the safer default and the opposite of what SQL gives you.

pub fn unique(&mut self) -> &mut Self

pub fn primary(&mut self) -> &mut Self

pub fn index(&mut self) -> &mut Self

pub fn default(&mut self, value: &str) -> &mut Self

A literal default. Strings are quoted; use Column::default_raw for an expression such as now().

pub fn default_int(&mut self, value: i64) -> &mut Self

pub fn default_bool(&mut self, value: bool) -> &mut Self

MySQL and SQL Server store a boolean as a number, so true is written as 1 where true would not parse.

pub fn default_now(&mut self) -> &mut Self

Default to the current time, in whatever the database calls it.

pub fn default_raw(&mut self, expression: &str) -> &mut Self

A default expression, written verbatim. Only migration authors reach this, never user input.

pub fn references(&mut self, table: &str, column: &str) -> &mut Self

A foreign key to another table’s column.

pub fn cascade_on_delete(&mut self) -> &mut Self

on delete cascade — only meaningful with Column::references.

pub fn null_on_delete(&mut self) -> &mut Self

Trait Implementations

impl Clone for Column

fn clone(&self) -> Column

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Column

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.