Struct ExpressionEvaluator 

pub struct ExpressionEvaluator<'a> { /* private fields */ }

Evaluates expressions in the context of a row

Implementations

impl ExpressionEvaluator<'_>

pub fn eval( &self, expr: &Expression, row: &Row, ) -> Result<SqlValue, ExecutorError>

Evaluate an expression in the context of a row

impl<'a> ExpressionEvaluator<'a>

pub fn new(schema: &'a TableSchema) -> Self

Create a new expression evaluator for a given schema

pub fn with_outer_context( schema: &'a TableSchema, outer_row: &'a Row, outer_schema: &'a TableSchema, ) -> Self

Create a new expression evaluator with outer query context for correlated subqueries

pub fn with_database(schema: &'a TableSchema, database: &'a Database) -> Self

Create a new expression evaluator with database reference for subqueries

pub fn with_trigger_context( schema: &'a TableSchema, database: &'a Database, trigger_context: &'a TriggerContext<'a>, ) -> Self

Create a new expression evaluator with trigger context for OLD/NEW pseudo-variables

pub fn with_database_and_outer_context( schema: &'a TableSchema, database: &'a Database, outer_row: &'a Row, outer_schema: &'a TableSchema, ) -> Self

Create a new expression evaluator with database and outer context (for correlated subqueries)

pub fn with_procedural_context( schema: &'a TableSchema, database: &'a Database, procedural_context: &'a ExecutionContext, ) -> Self

Create a new expression evaluator with procedural context for stored procedure/function execution

pub fn with_database_and_cte( schema: &'a TableSchema, database: &'a Database, cte_context: &'a HashMap<String, CteResult>, ) -> Self

Create a new expression evaluator with database and CTE context Used for UPDATE/DELETE statements with WITH clauses

pub fn set_row_index(&mut self, index: u64)

Set the row index for ROWID pseudo-column support

When set, references to ROWID, rowid, or oid columns will return this value as a Bigint. This provides SQLite compatibility.

pub fn clear_row_index(&mut self)

Clear the row index (typically between row evaluations)

pub fn set_table_alias(&mut self, alias: String)

Set the table alias for UPDATE/DELETE statements

When set, column references qualified with this alias will resolve to the schema. SQLite extension: UPDATE t1 AS xyz SET … WHERE xyz.column = …

pub fn clear_cse_cache(&self)

Clear the CSE cache Should be called before evaluating expressions for a new row in multi-row contexts