Struct Index 

pub struct Index {
    pub name: String,
    pub table: String,
    pub columns: Vec<String>,
    pub index_type: IndexType,
    pub statistics: IndexStatistics,
    pub is_unique: bool,
    pub is_primary: bool,
}

Index metadata.

Fields

name: String

Index name.

table: String

Table name.

columns: Vec<String>

Indexed columns.

index_type: IndexType

Index type.

statistics: IndexStatistics

Index statistics.

is_unique: bool

Whether the index is unique.

is_primary: bool

Whether the index is primary key.

Implementations

impl Index

pub fn new( name: String, table: String, columns: Vec<String>, index_type: IndexType, statistics: IndexStatistics, ) -> Self

Create a new index.

pub fn with_unique(self) -> Self

Mark as unique index.

pub fn with_primary(self) -> Self

Mark as primary key.

pub fn covers_columns(&self, columns: &[String]) -> bool

Check if index covers columns.

pub fn supports_prefix(&self, columns: &[String]) -> bool

Check if index can be used for prefix match.

Trait Implementations

impl Clone for Index

fn clone(&self) -> Index

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Index

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Index

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for Index

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

where __S: Serializer,

Serialize this value into the given Serde serializer.