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Query

Struct Query 

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pub struct Query {
    pub select: Vec<String>,
    pub table: String,
    pub table_alias: Option<String>,
    pub joins: Vec<JoinSpec>,
    pub predicate: Option<Expr>,
    pub order_by: Vec<(String, Order)>,
    pub limit: Option<usize>,
    pub group_by: Vec<String>,
    pub aggregates: Vec<Aggregate>,
    pub having: Option<Expr>,
    pub use_index: Option<String>,
}

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§select: Vec<String>§table: String§table_alias: Option<String>§joins: Vec<JoinSpec>§predicate: Option<Expr>§order_by: Vec<(String, Order)>§limit: Option<usize>§group_by: Vec<String>§aggregates: Vec<Aggregate>§having: Option<Expr>§use_index: Option<String>

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impl Query

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pub fn select(cols: &[&str]) -> Self

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

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

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pub fn inner_join( self, table: &str, left_column: &str, right_column: &str, ) -> Self

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pub fn left_join( self, table: &str, left_column: &str, right_column: &str, ) -> Self

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pub fn right_join( self, table: &str, left_column: &str, right_column: &str, ) -> Self

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

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

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pub fn where_(self, expr: Expr) -> Self

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pub fn order_by(self, col: &str, order: Order) -> Self

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pub fn limit(self, n: usize) -> Self

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pub fn group_by(self, cols: &[&str]) -> Self

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pub fn aggregate(self, aggregate: Aggregate) -> Self

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pub fn having(self, expr: Expr) -> Self

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

Trait Implementations§

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impl Clone for Query

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fn clone(&self) -> Query

Returns a duplicate 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 Debug for Query

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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 PartialEq for Query

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fn eq(&self, other: &Query) -> 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 StructuralPartialEq for Query

Auto Trait Implementations§

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impl Freeze for Query

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impl RefUnwindSafe for Query

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impl Send for Query

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impl Sync for Query

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impl Unpin for Query

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impl UnsafeUnpin for Query

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impl UnwindSafe for Query

Blanket Implementations§

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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, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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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> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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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> Same for T

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type Output = T

Should always be Self
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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> WithSubscriber for T

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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
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more