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Ty

Enum Ty 

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pub enum Ty {
    Text,
    Int,
    Num,
    Bool,
    Json,
    Prop,
    Null,
}
Expand description

What a translated operand carries in SQL, as far as the translator can tell statically. The comparison gate (comparable) declines the pairs SQLite would compare with less type than the in-memory engine has.

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Text

A string literal or binding, a text column, a text intrinsic, lower() / upper() output.

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Int

An integer intrinsic ($ordinal, $depth).

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Num

A number literal or binding.

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Bool

A boolean literal or binding.

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Json

A json_extract read (an attrs path or a bare attribute name): JSON true and 1 both surface as 1, so a bool or num against it tests json_type first ([typed_compare]).

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Prop

A document property scalar (bare key on docs, doc.<k>): val_bool, val_num and val_text coalesce into one column, and a list-valued or nested key has no scalar row (NULL); a bool or num against it tests p.type first ([typed_compare]).

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Null

null (or an absent binding).

Trait Implementations§

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impl Clone for Ty

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fn clone(&self) -> Self

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more
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impl Copy for Ty

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impl Debug for Ty

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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 Eq for Ty

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impl PartialEq for Ty

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fn eq(&self, other: &Self) -> bool

Equality operator ==. Read more
1.0.0 (const: unstable) · Source§

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=. Read more
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impl StructuralPartialEq for Ty

Auto Trait Implementations§

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impl Freeze for Ty

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impl RefUnwindSafe for Ty

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impl Send for Ty

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impl Sync for Ty

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impl Unpin for Ty

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impl UnsafeUnpin for Ty

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impl UnwindSafe for Ty

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<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Compare self to key and return true if they are equal.
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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> 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 = !

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

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.