diesel_dynamic_schema

Struct Table

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pub struct Table<T, U = T> { /* private fields */ }
Expand description

A database table. A database table. This type is created by the table function.

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impl<T, U> Table<T, U>

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pub fn column<ST, V>(&self, name: V) -> Column<Self, V, ST>
where Self: Clone,

Create a column with this table.

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pub fn name(&self) -> &T

Gets the name of the table, as specified on creation.

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impl<T, U> AsQuery for Table<T, U>
where T: Clone, U: Clone, SelectStatement<FromClause<Self>>: Query<SqlType = NotSelectable>,

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type SqlType = NotSelectable

The SQL type of Self::Query
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type Query = SelectStatement<FromClause<Table<T, U>>>

What kind of query does this type represent?
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fn as_query(self) -> Self::Query

Converts a type which semantically represents a SQL query into the actual query being executed. See the trait level docs for more.
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impl<T: Clone, U: Clone> Clone for Table<T, U>

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fn clone(&self) -> Table<T, U>

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<T: Debug, U: Debug> Debug for Table<T, U>

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

Formats the value using the given formatter. Read more
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impl<T: Hash, U: Hash> Hash for Table<T, U>

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fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl<T: PartialEq, U: PartialEq> PartialEq for Table<T, U>

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fn eq(&self, other: &Table<T, U>) -> bool

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl<T, U, DB> QueryFragment<DB> for Table<T, U>
where DB: Backend, T: Borrow<str>, U: Borrow<str>,

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fn walk_ast<'b>(&'b self, out: AstPass<'_, 'b, DB>) -> QueryResult<()>

Walk over this QueryFragment for all passes. Read more
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fn to_sql( &self, out: &mut <DB as Backend>::QueryBuilder, backend: &DB, ) -> Result<(), Error>

Available on crate feature i-implement-a-third-party-backend-and-opt-into-breaking-changes only.
Converts this QueryFragment to its SQL representation. Read more
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fn collect_binds<'b>( &'b self, out: &mut <DB as Backend>::BindCollector<'b>, metadata_lookup: &mut <DB as TypeMetadata>::MetadataLookup, backend: &'b DB, ) -> Result<(), Error>

Available on crate feature i-implement-a-third-party-backend-and-opt-into-breaking-changes only.
Serializes all bind parameters in this query. Read more
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fn is_safe_to_cache_prepared(&self, backend: &DB) -> Result<bool, Error>

Available on crate feature i-implement-a-third-party-backend-and-opt-into-breaking-changes only.
Is this query safe to store in the prepared statement cache? Read more
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fn is_noop(&self, backend: &DB) -> Result<bool, Error>

Available on crate feature i-implement-a-third-party-backend-and-opt-into-breaking-changes only.
Does walking this AST have any effect?
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impl<T, U> QueryId for Table<T, U>

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const HAS_STATIC_QUERY_ID: bool = false

Can the SQL generated by Self be uniquely identified by its type? Read more
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type QueryId = ()

A type which uniquely represents Self in a SQL query. Read more
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fn query_id() -> Option<TypeId>

Returns the type id of Self::QueryId if Self::HAS_STATIC_QUERY_ID. Returns None otherwise. Read more
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impl<T, U> QuerySource for Table<T, U>
where Self: Clone,

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type FromClause = Table<T, U>

The type returned by from_clause
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type DefaultSelection = DummyExpression

The type returned by default_selection
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fn from_clause(&self) -> Self

The actual FROM clause of this type. This is typically only called in QueryFragment implementations.
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fn default_selection(&self) -> Self::DefaultSelection

The default select clause of this type, which should be used if no select clause was explicitly specified. This should always be a tuple of all the desired columns, not star
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impl<T, U> Table for Table<T, U>
where Self: QuerySource + AsQuery,

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type PrimaryKey = DummyExpression

The type returned by primary_key
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type AllColumns = DummyExpression

The type returned by all_columns
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fn primary_key(&self) -> Self::PrimaryKey

Returns the primary key of this table. Read more
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fn all_columns() -> Self::AllColumns

Returns a tuple of all columns belonging to this table.
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impl<T: Copy, U: Copy> Copy for Table<T, U>

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impl<T: Eq, U: Eq> Eq for Table<T, U>

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impl<T, U> StructuralPartialEq for Table<T, U>

Auto Trait Implementations§

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impl<T, U> Freeze for Table<T, U>
where T: Freeze, U: Freeze,

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impl<T, U> RefUnwindSafe for Table<T, U>
where T: RefUnwindSafe, U: RefUnwindSafe,

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impl<T, U> Send for Table<T, U>
where T: Send, U: Send,

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impl<T, U> Sync for Table<T, U>
where T: Sync, U: Sync,

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impl<T, U> Unpin for Table<T, U>
where T: Unpin, U: Unpin,

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impl<T, U> UnwindSafe for Table<T, U>
where T: UnwindSafe, U: UnwindSafe,

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dst: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
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impl<T> CombineDsl for T
where T: Table,

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type Query = <T as AsQuery>::Query

What kind of query does this type represent?
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fn union<Rhs>( self, rhs: Rhs, ) -> CombinationClause<Union, Distinct, <T as CombineDsl>::Query, <Rhs as AsQuery>::Query>
where Rhs: AsQuery<SqlType = <<T as CombineDsl>::Query as Query>::SqlType>,

Combine two queries using a SQL UNION Read more
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fn union_all<Rhs>( self, rhs: Rhs, ) -> CombinationClause<Union, All, <T as CombineDsl>::Query, <Rhs as AsQuery>::Query>
where Rhs: AsQuery<SqlType = <<T as CombineDsl>::Query as Query>::SqlType>,

Combine two queries using a SQL UNION ALL
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fn intersect<Rhs>( self, rhs: Rhs, ) -> CombinationClause<Intersect, Distinct, <T as CombineDsl>::Query, <Rhs as AsQuery>::Query>
where Rhs: AsQuery<SqlType = <<T as CombineDsl>::Query as Query>::SqlType>,

Combine two queries using a SQL INTERSECT
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fn intersect_all<Rhs>( self, rhs: Rhs, ) -> CombinationClause<Intersect, All, <T as CombineDsl>::Query, <Rhs as AsQuery>::Query>
where Rhs: AsQuery<SqlType = <<T as CombineDsl>::Query as Query>::SqlType>,

Combine two queries using a SQL INTERSECT ALL
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fn except<Rhs>( self, rhs: Rhs, ) -> CombinationClause<Except, Distinct, <T as CombineDsl>::Query, <Rhs as AsQuery>::Query>
where Rhs: AsQuery<SqlType = <<T as CombineDsl>::Query as Query>::SqlType>,

Combine two queries using a SQL EXCEPT
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fn except_all<Rhs>( self, rhs: Rhs, ) -> CombinationClause<Except, All, <T as CombineDsl>::Query, <Rhs as AsQuery>::Query>
where Rhs: AsQuery<SqlType = <<T as CombineDsl>::Query as Query>::SqlType>,

Combine two queries using a SQL EXCEPT ALL
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impl<Conn, DB, T> ExecuteDsl<Conn, DB> for T
where Conn: Connection<Backend = DB>, DB: Backend, T: QueryFragment<DB> + QueryId,

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fn execute(query: T, conn: &mut Conn) -> Result<usize, Error>

Execute this command
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> IntoSql for T

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fn into_sql<T>(self) -> Self::Expression
where Self: Sized + AsExpression<T>, T: SqlType + TypedExpressionType,

Convert self to an expression for Diesel’s query builder. Read more
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fn as_sql<'a, T>(&'a self) -> <&'a Self as AsExpression<T>>::Expression
where &'a Self: AsExpression<T>, T: SqlType + TypedExpressionType,

Convert &self to an expression for Diesel’s query builder. Read more
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impl<T> JoinOnDsl for T
where T: QuerySource,

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fn on<On>(self, on: On) -> OnClauseWrapper<Self, On>

See the trait documentation.
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impl<Lhs, Rhs, On> JoinTo<OnClauseWrapper<Rhs, On>> for Lhs
where Lhs: Table,

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type FromClause = Rhs

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type OnClause = On

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fn join_target( rhs: OnClauseWrapper<Rhs, On>, ) -> (<Lhs as JoinTo<OnClauseWrapper<Rhs, On>>>::FromClause, <Lhs as JoinTo<OnClauseWrapper<Rhs, On>>>::OnClause)

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impl<T> OnlyDsl for T
where T: Table,

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fn only(self) -> Only<Self>

See the trait-level docs.
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impl<T> QueryDsl for T
where T: Table,

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fn distinct(self) -> Self::Output
where Self: DistinctDsl,

Adds the DISTINCT keyword to a query. Read more
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fn distinct_on<Expr>(self, expr: Expr) -> Self::Output
where Self: DistinctOnDsl<Expr>,

Adds the DISTINCT ON clause to a query. Read more
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fn select<Selection>(self, selection: Selection) -> Self::Output
where Selection: Expression, Self: SelectDsl<Selection>,

Adds a SELECT clause to the query. Read more
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fn count(self) -> Self::Output
where Self: SelectDsl<CountStar>,

Get the count of a query. This is equivalent to .select(count_star()) Read more
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fn inner_join<Rhs>(self, rhs: Rhs) -> Self::Output
where Self: JoinWithImplicitOnClause<Rhs, Inner>,

Join two tables using a SQL INNER JOIN. Read more
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fn left_outer_join<Rhs>(self, rhs: Rhs) -> Self::Output
where Self: JoinWithImplicitOnClause<Rhs, LeftOuter>,

Join two tables using a SQL LEFT OUTER JOIN. Read more
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fn left_join<Rhs>(self, rhs: Rhs) -> Self::Output
where Self: JoinWithImplicitOnClause<Rhs, LeftOuter>,

Alias for left_outer_join.
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fn filter<Predicate>(self, predicate: Predicate) -> Self::Output
where Self: FilterDsl<Predicate>,

Adds to the WHERE clause of a query. Read more
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fn or_filter<Predicate>(self, predicate: Predicate) -> Self::Output
where Self: OrFilterDsl<Predicate>,

Adds to the WHERE clause of a query using OR Read more
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fn find<PK>(self, id: PK) -> Self::Output
where Self: FindDsl<PK>,

Attempts to find a single record from the given table by primary key. Read more
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fn order<Expr>(self, expr: Expr) -> Self::Output
where Expr: Expression, Self: OrderDsl<Expr>,

Sets the order clause of a query. Read more
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fn order_by<Expr>(self, expr: Expr) -> Self::Output
where Expr: Expression, Self: OrderDsl<Expr>,

Alias for order
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fn then_order_by<Order>(self, order: Order) -> Self::Output
where Self: ThenOrderDsl<Order>,

Appends to the ORDER BY clause of this SQL query. Read more
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fn limit(self, limit: i64) -> Self::Output
where Self: LimitDsl,

Sets the limit clause of the query. Read more
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fn offset(self, offset: i64) -> Self::Output
where Self: OffsetDsl,

Sets the offset clause of the query. Read more
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fn group_by<GB>(self, group_by: GB) -> Self::Output
where GB: Expression, Self: GroupByDsl<GB>,

Sets the group by clause of a query. Read more
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fn having<Predicate>(self, predicate: Predicate) -> Self::Output
where Self: HavingDsl<Predicate>,

Adds to the HAVING clause of a query. Read more
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fn for_update(self) -> Self::Output
where Self: LockingDsl<ForUpdate>,

Adds FOR UPDATE to the end of the select statement. Read more
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fn for_no_key_update(self) -> Self::Output
where Self: LockingDsl<ForNoKeyUpdate>,

Adds FOR NO KEY UPDATE to the end of the select statement. Read more
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fn for_share(self) -> Self::Output
where Self: LockingDsl<ForShare>,

Adds FOR SHARE to the end of the select statement. Read more
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fn for_key_share(self) -> Self::Output
where Self: LockingDsl<ForKeyShare>,

Adds FOR KEY SHARE to the end of the select statement. Read more
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fn skip_locked(self) -> Self::Output
where Self: ModifyLockDsl<SkipLocked>,

Adds SKIP LOCKED to the end of a FOR UPDATE clause. Read more
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fn no_wait(self) -> Self::Output
where Self: ModifyLockDsl<NoWait>,

Adds NOWAIT to the end of a FOR UPDATE clause. Read more
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fn into_boxed<'a, DB>(self) -> Self::Output
where DB: Backend, Self: BoxedDsl<'a, DB>,

Boxes the pieces of a query into a single type. Read more
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fn single_value(self) -> Self::Output
where Self: SingleValueDsl,

Wraps this select statement in parenthesis, allowing it to be used as an expression. Read more
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fn nullable(self) -> Self::Output
where Self: SelectNullableDsl,

Coerce the SQL type of the select clause to it’s nullable equivalent. Read more
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impl<T, DB> QueryFragmentForCachedStatement<DB> for T
where DB: Backend, <DB as Backend>::QueryBuilder: Default, T: QueryFragment<DB>,

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fn construct_sql(&self, backend: &DB) -> Result<String, Error>

Convert the query fragment into a SQL string for the given backend
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fn is_safe_to_cache_prepared(&self, backend: &DB) -> Result<bool, Error>

Check whether it’s safe to cache the query
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impl<T, Conn> RunQueryDsl<Conn> for T
where T: Table,

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fn execute(self, conn: &mut Conn) -> Result<usize, Error>
where Conn: Connection, Self: ExecuteDsl<Conn>,

Executes the given command, returning the number of rows affected. Read more
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fn load<'query, U>(self, conn: &mut Conn) -> Result<Vec<U>, Error>
where Self: LoadQuery<'query, Conn, U>,

Executes the given query, returning a Vec with the returned rows. Read more
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fn load_iter<'conn, 'query, U, B>( self, conn: &'conn mut Conn, ) -> Result<Self::RowIter<'conn>, Error>
where 'query: 'conn, U: 'conn, Self: LoadQuery<'query, Conn, U, B> + 'conn,

Executes the given query, returning an Iterator with the returned rows. Read more
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fn get_result<'query, U>(self, conn: &mut Conn) -> Result<U, Error>
where Self: LoadQuery<'query, Conn, U>,

Runs the command, and returns the affected row. Read more
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fn get_results<'query, U>(self, conn: &mut Conn) -> Result<Vec<U>, Error>
where Self: LoadQuery<'query, Conn, U>,

Runs the command, returning an Vec with the affected rows. Read more
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fn first<'query, U>(self, conn: &mut Conn) -> Result<U, Error>
where Self: LimitDsl, Self::Output: LoadQuery<'query, Conn, U>,

Attempts to load a single record. Read more
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impl<T> TablesampleDsl for T
where T: Table,

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fn tablesample_bernoulli( self, portion: i16, ) -> Tablesample<Self, BernoulliMethod>

See the trait-level docs.
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fn tablesample_system(self, portion: i16) -> Tablesample<Self, SystemMethod>

See the trait-level docs.
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V

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impl<T> ErasedDestructor for T
where T: 'static,

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impl<T> MaybeSendSync for T