Enum DatabaseValue

pub enum DatabaseValue<'a> {
    Parameterized(ParameterizedValue<'a>),
    Column(Box<Column<'a>>),
    Row(Row<'a>),
    Select(Box<Select<'a>>),
    Function(Function<'a>),
    Asterisk(Option<Box<Table<'a>>>),
    Op(Box<SqlOp<'a>>),
}

A value we can compare and use in database queries.

Variants

Parameterized(ParameterizedValue<'a>)

Anything that we must parameterize before querying

Column(Box<Column<'a>>)

A database column

Row(Row<'a>)

Data in a row form, e.g. (1, 2, 3)

Select(Box<Select<'a>>)

A nested SELECT statement

Function(Function<'a>)

A database function call

Asterisk(Option<Box<Table<'a>>>)

A qualified asterisk to a table

Op(Box<SqlOp<'a>>)

An operation: sum, sub, mul or div.

Trait Implementations

impl<'a> Add for DatabaseValue<'a>

type Output = DatabaseValue<'a>

The resulting type after applying the + operator.

fn add(self, other: Self) -> Self

Performs the + operation.

impl<'a> Clone for DatabaseValue<'a>

fn clone(&self) -> DatabaseValue<'a>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> Comparable<'a> for DatabaseValue<'a>

fn equals<T>(self, comparison: T) -> Compare<'a>

where T: Into<DatabaseValue<'a>>,

Tests if both sides are the same value.

fn not_equals<T>(self, comparison: T) -> Compare<'a>

where T: Into<DatabaseValue<'a>>,

Tests if both sides are not the same value.

fn less_than<T>(self, comparison: T) -> Compare<'a>

where T: Into<DatabaseValue<'a>>,

Tests if the left side is smaller than the right side.

fn less_than_or_equals<T>(self, comparison: T) -> Compare<'a>

where T: Into<DatabaseValue<'a>>,

Tests if the left side is smaller than the right side or the same.

fn greater_than<T>(self, comparison: T) -> Compare<'a>

where T: Into<DatabaseValue<'a>>,

Tests if the left side is bigger than the right side.

fn greater_than_or_equals<T>(self, comparison: T) -> Compare<'a>

where T: Into<DatabaseValue<'a>>,

Tests if the left side is bigger than the right side or the same.

fn in_selection<T>(self, selection: T) -> Compare<'a>

where T: Into<DatabaseValue<'a>>,

Tests if the left side is included in the right side collection.

fn not_in_selection<T>(self, selection: T) -> Compare<'a>

where T: Into<DatabaseValue<'a>>,

Tests if the left side is not included in the right side collection.

fn like<T>(self, pattern: T) -> Compare<'a>

where T: Into<Cow<'a, str>>,

Tests if the left side includes the right side string.

fn not_like<T>(self, pattern: T) -> Compare<'a>

where T: Into<Cow<'a, str>>,

Tests if the left side does not include the right side string.

fn begins_with<T>(self, pattern: T) -> Compare<'a>

where T: Into<Cow<'a, str>>,

Tests if the left side starts with the right side string.

fn not_begins_with<T>(self, pattern: T) -> Compare<'a>

where T: Into<Cow<'a, str>>,

Tests if the left side doesn’t start with the right side string.

fn ends_into<T>(self, pattern: T) -> Compare<'a>

where T: Into<Cow<'a, str>>,

Tests if the left side ends into the right side string.

fn not_ends_into<T>(self, pattern: T) -> Compare<'a>

where T: Into<Cow<'a, str>>,

Tests if the left side does not end into the right side string.

fn is_null(self) -> Compare<'a>

Tests if the left side is NULL.

fn is_not_null(self) -> Compare<'a>

Tests if the left side is not NULL.

fn between<T, V>(self, left: T, right: V) -> Compare<'a>

where T: Into<DatabaseValue<'a>>, V: Into<DatabaseValue<'a>>,

Tests if the value is between two given values.

fn not_between<T, V>(self, left: T, right: V) -> Compare<'a>

where T: Into<DatabaseValue<'a>>, V: Into<DatabaseValue<'a>>,

Tests if the value is not between two given values.

impl<'a> Debug for DatabaseValue<'a>

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

Formats the value using the given formatter.

impl<'a> Div for DatabaseValue<'a>

type Output = DatabaseValue<'a>

The resulting type after applying the / operator.

fn div(self, other: Self) -> Self

Performs the / operation.

impl<'a> From<AggregateToString<'a>> for DatabaseValue<'a>

fn from(f: AggregateToString<'a>) -> Self

Converts to this type from the input type.

impl<'a> From<Column<'a>> for DatabaseValue<'a>

fn from(col: Column<'a>) -> Self

Converts to this type from the input type.

impl<'a> From<Count<'a>> for DatabaseValue<'a>

fn from(f: Count<'a>) -> Self

Converts to this type from the input type.

impl<'a> From<Function<'a>> for DatabaseValue<'a>

fn from(that: Function<'a>) -> Self

Converts to this type from the input type.

impl<'a> From<Row<'a>> for DatabaseValue<'a>

fn from(that: Row<'a>) -> Self

Converts to this type from the input type.

impl<'a> From<RowNumber<'a>> for DatabaseValue<'a>

fn from(f: RowNumber<'a>) -> Self

Converts to this type from the input type.

impl<'a> From<Select<'a>> for DatabaseValue<'a>

fn from(sel: Select<'a>) -> DatabaseValue<'a>

Converts to this type from the input type.

impl<'a> From<SqlOp<'a>> for DatabaseValue<'a>

fn from(p: SqlOp<'a>) -> Self

Converts to this type from the input type.

impl<'a, T> From<T> for DatabaseValue<'a>

where T: Into<ParameterizedValue<'a>>,

fn from(p: T) -> Self

Converts to this type from the input type.

impl<'a, T> From<Vec<T>> for DatabaseValue<'a>

where T: Into<DatabaseValue<'a>>,

fn from(v: Vec<T>) -> Self

Converts to this type from the input type.

impl<'a> Mul for DatabaseValue<'a>

type Output = DatabaseValue<'a>

The resulting type after applying the * operator.

fn mul(self, other: Self) -> Self

Performs the * operation.

impl<'a> PartialEq for DatabaseValue<'a>

fn eq(&self, other: &DatabaseValue<'a>) -> bool

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<'a> Rem for DatabaseValue<'a>

type Output = DatabaseValue<'a>

The resulting type after applying the % operator.

fn rem(self, other: Self) -> Self

Performs the % operation.

impl<'a> Sub for DatabaseValue<'a>

type Output = DatabaseValue<'a>

The resulting type after applying the - operator.

fn sub(self, other: Self) -> Self

Performs the - operation.

impl<'a> StructuralPartialEq for DatabaseValue<'a>