Struct QueryContext 

pub struct QueryContext {
    pub warehouse: Option<String>,
    pub role: Option<String>,
    pub database: Option<String>,
    pub schema: Option<String>,
}

A concrete statement context (resolved warehouse/role/database/schema names).

None means “not set / leave at the session’s current value”. A session’s base context (captured at creation) is fully concrete, so any per-query override can always be reset back to it.

Fields

warehouse: Option<String>

Warehouse name.

role: Option<String>

Role name.

database: Option<String>

Database name.

schema: Option<String>

Schema name.

Implementations

impl QueryContext

pub fn overlay(&self, overrides: &Self) -> Self

Returns self with any Some field of overrides taking precedence.

Used as base.overlay(&overrides) to compute the concrete context a query should run under.

pub fn summary(&self) -> String

A compact wh/role/db/schema label for menus ((default) when empty).

Trait Implementations

impl Clone for QueryContext

fn clone(&self) -> QueryContext

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for QueryContext

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

Formats the value using the given formatter.

impl Default for QueryContext

fn default() -> QueryContext

Returns the “default value” for a type.

impl Eq for QueryContext

impl PartialEq for QueryContext

fn eq(&self, other: &QueryContext) -> 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 Serialize for QueryContext

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for QueryContext