Trait SchemaExpressionCatalog 

pub trait SchemaExpressionCatalog: EngineHook + SetFunctionCatalog {
    // Required methods
    fn registered_runtime_function_volatility(
        &self,
        name: &str,
    ) -> Option<FunctionVolatility>;
    fn schema_expression_columns(
        &self,
        table: &str,
    ) -> Result<Option<Vec<ColumnDef>>, SQLError>;
}

Definition lookup for generated columns and immutable index expressions.

Required Methods

fn registered_runtime_function_volatility( &self, name: &str, ) -> Option<FunctionVolatility>

fn schema_expression_columns( &self, table: &str, ) -> Result<Option<Vec<ColumnDef>>, SQLError>

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors