pub struct ForeignKeyDropStatement { /* private fields */ }
Expand description
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
impl ForeignKeyDropStatement
pub fn new() -> ForeignKeyDropStatement
pub fn new() -> ForeignKeyDropStatement
Construct a new ForeignKeyDropStatement
pub fn name(&mut self, name: &str) -> &mut ForeignKeyDropStatement
pub fn name(&mut self, name: &str) -> &mut ForeignKeyDropStatement
Set foreign key name
pub fn table<T>(&mut self, table: T) -> &mut ForeignKeyDropStatement where
T: 'static + Iden,
pub fn table<T>(&mut self, table: T) -> &mut ForeignKeyDropStatement where
T: 'static + Iden,
Set key table and referencing table
impl ForeignKeyDropStatement
impl ForeignKeyDropStatement
pub fn to_string<T>(&self, schema_builder: T) -> String where
T: SchemaBuilder,
pub fn build<T>(&self, schema_builder: T) -> String where
T: SchemaBuilder,
pub fn build_any(&self, schema_builder: &dyn SchemaBuilder) -> String
Trait Implementations
impl Clone for ForeignKeyDropStatement
impl Clone for ForeignKeyDropStatement
fn clone(&self) -> ForeignKeyDropStatement
fn clone(&self) -> ForeignKeyDropStatement
Returns a copy of the value. Read more
1.0.0 · sourcefn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source
. Read more
impl Debug for ForeignKeyDropStatement
impl Debug for ForeignKeyDropStatement
impl Default for ForeignKeyDropStatement
impl Default for ForeignKeyDropStatement
fn default() -> ForeignKeyDropStatement
fn default() -> ForeignKeyDropStatement
Returns the “default value” for a type. Read more
impl SchemaStatementBuilder for ForeignKeyDropStatement
impl SchemaStatementBuilder for ForeignKeyDropStatement
fn build<T>(&self, schema_builder: T) -> String where
T: SchemaBuilder,
fn build<T>(&self, schema_builder: T) -> String where
T: SchemaBuilder,
Build corresponding SQL statement for certain database backend and return SQL string
fn build_any(&self, schema_builder: &dyn SchemaBuilder) -> 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>(&self, schema_builder: T) -> String where
T: SchemaBuilder,
fn to_string<T>(&self, schema_builder: T) -> String where
T: SchemaBuilder,
Build corresponding SQL statement for certain database backend and return SQL string
sourceimpl StatementBuilder for ForeignKeyDropStatement
impl StatementBuilder for ForeignKeyDropStatement
sourcefn build(&self, db_backend: &DatabaseBackend) -> Statement
fn build(&self, db_backend: &DatabaseBackend) -> Statement
Method to call in order to build a Statement
Auto Trait Implementations
impl !RefUnwindSafe for ForeignKeyDropStatement
impl Send for ForeignKeyDropStatement
impl Sync for ForeignKeyDropStatement
impl Unpin for ForeignKeyDropStatement
impl !UnwindSafe for ForeignKeyDropStatement
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
sourceimpl<T> Instrument for T
impl<T> Instrument for T
sourcefn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
sourcefn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
sourceimpl<T> ToOwned for T where
T: Clone,
impl<T> ToOwned for T where
T: Clone,
type Owned = T
type Owned = T
The resulting type after obtaining ownership.
sourcefn clone_into(&self, target: &mut T)
fn clone_into(&self, target: &mut T)
toowned_clone_into
)Uses borrowed data to replace owned data, usually by cloning. Read more
sourceimpl<T> WithSubscriber for T
impl<T> WithSubscriber for T
sourcefn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> where
S: Into<Dispatch>,
fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> where
S: Into<Dispatch>,
Attaches the provided Subscriber
to this type, returning a
WithDispatch
wrapper. Read more
sourcefn with_current_subscriber(self) -> WithDispatch<Self>
fn with_current_subscriber(self) -> WithDispatch<Self>
Attaches the current default Subscriber
to this type, returning a
WithDispatch
wrapper. Read more