[]Struct kubos_telemetry_db::telemetry::columns::star

pub struct star;
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Represents table_name.*, which is sometimes needed for efficient count queries. It cannot be used in place of all_columns, and has a SqlType of () to prevent it being used that way

Trait Implementations

impl Clone for star
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Returns a copy of the value. Read more

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Performs copy-assignment from source. Read more

impl Copy for star

impl Debug for star
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Formats the value using the given formatter. Read more

impl SelectableExpression<table> for star

impl AppearsOnTable<table> for star

impl Expression for star

The type that this expression represents in SQL

impl<DB: Backend> QueryFragment<DB> for star where
    <table as QuerySource>::FromClause: QueryFragment<DB>, 
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Walk over this QueryFragment for all passes. Read more

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Converts this QueryFragment to its SQL representation. Read more

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Serializes all bind parameters in this query. Read more

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Is this query safe to store in the prepared statement cache? Read more

Auto Trait Implementations

impl Send for star

impl Sync for star

Blanket Implementations

impl<T> From for T
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Performs the conversion.

impl<T, U> Into for T where
    U: From<T>, 
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Performs the conversion.

impl<T> ToOwned for T where
    T: Clone
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Creates owned data from borrowed data, usually by cloning. Read more

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🔬 This is a nightly-only experimental API. (toowned_clone_into)

recently added

Uses borrowed data to replace owned data, usually by cloning. Read more

impl<T, U> TryFrom for T where
    T: From<U>, 
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🔬 This is a nightly-only experimental API. (try_from)

The type returned in the event of a conversion error.

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🔬 This is a nightly-only experimental API. (try_from)

Performs the conversion.

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

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

impl<T, U> TryInto for T where
    U: TryFrom<T>, 
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🔬 This is a nightly-only experimental API. (try_from)

The type returned in the event of a conversion error.

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🔬 This is a nightly-only experimental API. (try_from)

Performs the conversion.

impl<T> Any for T where
    T: 'static + ?Sized
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🔬 This is a nightly-only experimental API. (get_type_id)

this method will likely be replaced by an associated static

Gets the TypeId of self. Read more

impl<T> NullableExpressionMethods for T where
    T: Expression, 
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Converts this potentially non-null expression into one which is treated as nullable. This method has no impact on the generated SQL, and is only used to allow certain comparisons that would otherwise fail to compile. Read more

impl<T> IntoSql for T
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Convert self to an expression for Diesel's query builder. Read more

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Convert &self to an expression for Diesel's query builder. Read more