Struct sea_query::foreign_key::ForeignKeyDropStatement

pub struct ForeignKeyDropStatement { /* fields omitted */ }

Drop a foreign key constraint for an existing table

Examples

use sea_query::{*, tests_cfg::*};

let foreign_key = ForeignKey::drop()
    .name("FK_character_font")
    .table(Char::Table)
    .to_owned();

assert_eq!(
    foreign_key.to_string(MysqlQueryBuilder),
    r#"ALTER TABLE `character` DROP FOREIGN KEY `FK_character_font`"#
);
assert_eq!(
    foreign_key.to_string(PostgresQueryBuilder),
    r#"ALTER TABLE "character" DROP CONSTRAINT "FK_character_font""#
);
// Sqlite does not support modification of foreign key constraints to existing tables

Implementations

impl ForeignKeyDropStatement

pub fn new() -> Self

Construct a new ForeignKeyDropStatement

pub fn name(self, name: &str) -> Self

Set foreign key name

pub fn table<T: 'static>(self, table: T) -> Self where
    T: Iden, 

Set key table and referencing table

impl ForeignKeyDropStatement

pub fn to_string<T: SchemaBuilder>(&self, schema_builder: T) -> String

pub fn build<T: SchemaBuilder>(&self, schema_builder: T) -> String

pub fn build_any(&self, schema_builder: &dyn SchemaBuilder) -> String

Trait Implementations

impl Clone for ForeignKeyDropStatement

fn clone(&self) -> ForeignKeyDropStatement

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ForeignKeyDropStatement

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

Formats the value using the given formatter.

impl Default for ForeignKeyDropStatement

fn default() -> Self

Returns the “default value” for a type.

impl SchemaStatementBuilder for ForeignKeyDropStatement

fn build<T: SchemaBuilder>(&self, schema_builder: T) -> String

Build corresponding SQL statement for certain database backend and return SQL string

fn build_any(&self, schema_builder: &dyn SchemaBuilder) -> String

Build corresponding SQL statement for certain database backend and return SQL string

fn to_string<T: SchemaBuilder>(&self, schema_builder: T) -> String

Build corresponding SQL statement for certain database backend and return SQL string