pub enum ConstraintOperator {
Show 17 variants EQ, GT, LE, LT, GE, MATCH, LIKE, GLOB, REGEXP, NE, ISNOT, ISNOTNULL, ISNULL, IS, LIMIT, OFFSET, FUNCTION(u8),
}
Expand description

Possible operators for a given constraint, found and used in xBestIndex and xFilter. https://www.sqlite.org/c3ref/c_index_constraint_eq.html TODO EQ=Equals, GT=GreaterThan, etc.

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EQ

‘Equals’, ex “=”

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GT

‘Greater Than’, ex “>”

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LE

‘Less than or equal to’, ex “<=”

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LT

‘Less than’, ex “<”

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GE

‘Greater than or equal to’, ex “>=”

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MATCH

‘Match’ function

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LIKE

‘LIKE’ function

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GLOB

‘Glob’ function

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REGEXP

‘REGEXP’ function

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NE

‘Not equal to’, ex “!=” or “<>”

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ISNOT

‘is not’ operation

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ISNOTNULL

‘is not null’ operation

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ISNULL

‘is null’ operation

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IS

‘is’ operation

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LIMIT

‘LIMIT’ constraint

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OFFSET

‘OFFSET’ operation

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FUNCTION(u8)

custom funciton overload, used in xFindFunction, see https://www.sqlite.org/vtab.html#xfindfunction

Trait Implementations§

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impl Debug for ConstraintOperator

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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<'de> Deserialize<'de> for ConstraintOperator

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fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more
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impl PartialEq for ConstraintOperator

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

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

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Serialize for ConstraintOperator

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fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>where __S: Serializer,

Serialize this value into the given Serde serializer. Read more
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impl Eq for ConstraintOperator

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impl StructuralEq for ConstraintOperator

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impl StructuralPartialEq for ConstraintOperator

Auto Trait Implementations§

Blanket Implementations§

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impl<T> Any for Twhere 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 Twhere 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 Twhere 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> 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 Twhere 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, U> TryFrom<U> for Twhere 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 Twhere 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<T> DeserializeOwned for Twhere T: for<'de> Deserialize<'de>,