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ScanParams

nodedb_sql::engine_rules

Struct ScanParams 

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pub struct ScanParams {
Show 13 fields
    pub collection: String,
    pub alias: Option<String>,
    pub filters: Vec<Filter>,
    pub projection: Vec<Projection>,
    pub sort_keys: Vec<SortKey>,
    pub limit: Option<usize>,
    pub offset: usize,
    pub distinct: bool,
    pub window_functions: Vec<WindowSpec>,
    pub indexes: Vec<IndexSpec>,
    pub temporal: TemporalScope,
    pub bitemporal: bool,
    pub has_auto_tier: bool,

}
Expand description

Parameters for planning a SCAN operation.

Fields§

§collection: String§alias: Option<String>§filters: Vec<Filter>§projection: Vec<Projection>§sort_keys: Vec<SortKey>§limit: Option<usize>§offset: usize§distinct: bool§window_functions: Vec<WindowSpec>§indexes: Vec<IndexSpec>

Secondary indexes available on the scan’s collection. Document engines consult this to rewrite equality-on-indexed-field into SqlPlan::DocumentIndexLookup. Other engines ignore it today.

§temporal: TemporalScope

Bitemporal qualifier propagated from plan_sql. Engines without bitemporal storage support reject a non-default scope via SqlError::Unsupported — silently ignoring it would return current-state data when the user asked for history.

§bitemporal: bool

Whether this collection was created with bitemporal storage. When true, engines that support bitemporal reads route the scan through versioned storage; when false, a non-default Self::temporal is rejected.

§has_auto_tier: bool

Whether the collection has a retention policy with AUTO_TIER on. A timeseries scan then carries the policy’s tiers, so a raw read of a range only the tiers hold is refused.

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