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 with_cte_context( self, cte_context: &'a HashMap<String, CteResult>, ) -> Self

Attach an outer CTE context to this evaluator (builder style).

Ensures subqueries evaluated in expression position resolve names bound by an enclosing WITH clause before falling back to catalog tables/views (issue #5350).

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 with_schema_context(self, schema_context: SchemaExprContext) -> Self

Mark this evaluator as evaluating a schema-attached expression (CHECK constraint, generated column, or index expression).

In these contexts SQLite rejects non-deterministic uses of the date/time functions (‘now’ / zero-argument defaults / ‘localtime’ / ‘utc’) at evaluation time with non-deterministic use of <fn>() in <context>.

pub fn clear_cse_cache(&self)

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