SimpleFastPathPlan

Struct SimpleFastPathPlan 

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pub struct SimpleFastPathPlan {
    pub table_name: String,
    /* private fields */
}
Expand description

Cached plan for simple fast-path eligible queries

This caches the result of is_simple_point_query() to avoid recomputing it on every execution. Provides moderate speedup for queries that pass fast-path validation but don’t match the specialized PkPointLookup pattern.

§Performance Optimization (#3780)

The resolved_columns field caches column names derived from the SELECT list after the first execution. This eliminates repeated:

  • Table lookups via database.get_table()
  • SELECT list iteration and column name derivation
  • Schema column iteration for wildcards

This reduces per-query overhead from ~5-15µs to ~1-2µs for repeated executions.

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§table_name: String

Table name (normalized to uppercase for case-insensitive matching)

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impl SimpleFastPathPlan

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pub fn new(table_name: String) -> Self

Create a new SimpleFastPathPlan with the given table name

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pub fn get_or_resolve_columns<F>(&self, resolver: F) -> Option<&Arc<[String]>>
where F: FnOnce() -> Option<Vec<String>>,

Get or initialize the cached column names

The resolver function is called only on the first invocation and derives column names from the SELECT list and table schema.

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pub fn is_resolved(&self) -> bool

Check if columns have been resolved

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impl Clone for SimpleFastPathPlan

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fn clone(&self) -> SimpleFastPathPlan

Returns a duplicate of the value. Read more
1.0.0 · Source§

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

Performs copy-assignment from source. Read more
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impl Debug for SimpleFastPathPlan

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

Formats the value using the given formatter. Read more

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🔬This is a nightly-only experimental API. (clone_to_uninit)
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