Struct MssqlQuery 

pub struct MssqlQuery {
    pub schema: Schema,
    pub connection: MssqlConnection,
    pub query: String,
    pub ctx: OptimizerContextRef,
}

Generic (logical) plan node for the mssql_query table function. Carries the connection parameters, the pre-discovered schema, and the user query. This is the shared body used by both crate::optimizer::plan_node::LogicalMssqlQuery and crate::optimizer::plan_node::BatchMssqlQuery via the convention-generic GenericPlanNode trait.

Fields

schema: Schema

Result schema discovered at bind time by describe_mssql_query.

connection: MssqlConnection

query: String

ctx: OptimizerContextRef

Implementations

impl MssqlQuery

pub fn columns(&self) -> Vec<ColumnDesc>

Build the ColumnDesc list consumed by BatchMssqlQuery::to_batch_prost_body. Column ids are placeholder-based — the executor does not depend on them.

Trait Implementations

impl Clone for MssqlQuery

fn clone(&self) -> MssqlQuery

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MssqlQuery

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

Formats the value using the given formatter.

impl Eq for MssqlQuery

where Schema: PartialEq, MssqlConnection: PartialEq, String: PartialEq,

impl GenericPlanNode for MssqlQuery

fn schema(&self) -> Schema

Return the pre-discovered result schema.

fn stream_key(&self) -> Option<Vec<usize>>

mssql_query does not produce a stream key — the executor returns rows in whatever order SQL Server produces them.

fn ctx(&self) -> OptimizerContextRef

Return the optimizer context associated with this node.

fn functional_dependency(&self) -> FunctionalDependencySet

No non-trivial functional dependencies are known for an arbitrary user-provided query; report a fresh empty FD set.

impl Hash for MssqlQuery

where Schema: Hash, MssqlConnection: Hash, String: Hash,

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 MssqlQuery

where Schema: PartialEq, MssqlConnection: PartialEq, String: PartialEq,

fn eq(&self, other: &Self) -> 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.