Struct QueryPlanner

pub struct QueryPlanner { /* private fields */ }

Query planner that generates optimized execution plans

Implementations

impl QueryPlanner

pub fn new(table_schemas: HashMap<String, TableSchema>) -> Self

Create a new query planner with table schemas

pub fn with_config( table_schemas: HashMap<String, TableSchema>, config: PlannerConfig, ) -> Self

Create a planner with custom configuration

pub fn update_table_stats(&mut self, table: String, stats: TableStatistics)

Update table statistics for better cost estimation

pub fn plan(&self, statement: Statement) -> Result<ExecutionPlan>

Generate an optimized execution plan for a SQL statement

pub fn update_table_schema(&mut self, table_name: String, schema: TableSchema)

Update table schemas (called when DDL operations occur)

pub fn remove_table_schema(&mut self, table_name: &str)

Remove table schema (called when table is dropped)

pub fn table_schemas(&self) -> &HashMap<String, TableSchema>

Get current table schemas

pub fn config(&self) -> &PlannerConfig

Get configuration

pub fn update_config(&mut self, config: PlannerConfig)

Update configuration