Crate featherdb_query 

SQL query engine for FeatherDB

Provides SQL parsing, planning, optimization, and execution.

Re-exports

pub use executor::ExecutionContext;

pub use executor::Executor;

pub use executor::QueryResult;

pub use executor::Row;

pub use expr::AggregateFunction;

pub use expr::BinaryOp;

pub use expr::Expr;

pub use expr::FrameBound;

pub use expr::FrameUnit;

pub use expr::SubqueryCompareOp;

pub use expr::SubqueryType;

pub use expr::UnaryOp;

pub use expr::WindowFrame;

pub use expr::WindowFunction;

pub use expr::WindowFunctionType;

pub use expr::WindowOrderByExpr;

pub use expr::WindowSortOrder;

Modules

cost_constants

Default cost constants for query estimation

executor

Query executor - executes logical plans

expr

Expression representation and evaluation

Structs

CacheStats

Statistics for the plan cache

CommonTableExpression

A Common Table Expression definition

CostEstimator

Cost estimator for query plans

IndexRange

Range specification for index scans

Optimizer

Query optimizer that applies transformation rules

Parser

SQL parser wrapper with enhanced error messages

PlanCache

LRU cache for query plans

Planner

Query planner with enhanced error messages

PlannerContext

Context for tracking available columns during planning

PreparedStatement

A prepared statement with a cached, optimized query plan

QueryEngine

Query engine with optional metrics collection

QueryMetrics

Thread-safe query metrics using atomic counters

QueryMetricsSnapshot

Snapshot of query metrics at a point in time

WindowExecutor

Window executor that computes window function results

Enums

CustomStatement

Custom statement for FeatherDB extensions that sqlparser doesn’t handle

IndexBound

Bound for index range scans

JoinType

Join type

LogicalPlan

Logical plan - represents a query as a tree of relational operators

ParseResult

Result of parsing - either a standard statement or a custom one

ParserShowGrantsTarget

Parsed SHOW GRANTS target

ShowGrantsTarget

Target for SHOW GRANTS query

SortOrder

Sort order

Functions

count_params

Count parameters in an expression

count_plan_params

Count parameters in a logical plan

substitute_params

Substitute parameters in an expression

substitute_plan_params

Substitute parameters in a logical plan