Struct QuerySignature 

pub struct QuerySignature { /* private fields */ }

Unique identifier for a query based on its structure

Implementations

impl QuerySignature

pub fn from_sql(sql: &str) -> Self

Create a signature from SQL text (legacy string-based approach)

pub fn from_ast(stmt: &Statement) -> Self

Create a signature from parsed AST, ignoring literal values This allows queries with different literals but identical structure to share cached plans

pub fn from_arena_select(select: &ArenaSelectStmt<'_>) -> Self

Create a signature from arena-allocated SelectStmt, ignoring literal values

pub fn hash(&self) -> u64

Get the underlying hash

Trait Implementations

impl Clone for QuerySignature

fn clone(&self) -> QuerySignature

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for QuerySignature

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

Formats the value using the given formatter.

impl Hash for QuerySignature

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for QuerySignature

fn eq(&self, other: &QuerySignature) -> 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 Eq for QuerySignature

impl StructuralPartialEq for QuerySignature