Struct SessionSimplifyProvider 

struct SessionSimplifyProvider<'a> {
    state: &'a SessionState,
    df_schema: &'a DFSchema,
}

Fields

state: &'a SessionState

df_schema: &'a DFSchema

Implementations

impl<'a> SessionSimplifyProvider<'a>

fn new(state: &'a SessionState, df_schema: &'a DFSchema) -> Self

Trait Implementations

impl SimplifyInfo for SessionSimplifyProvider<'_>

fn is_boolean_type(&self, expr: &Expr) -> Result<bool>

Returns true if this Expr has boolean type

fn nullable(&self, expr: &Expr) -> Result<bool>

Returns true of this expr is nullable (could possibly be NULL)

fn execution_props(&self) -> &ExecutionProps

Returns details needed for partial expression evaluation

fn get_data_type(&self, expr: &Expr) -> Result<DataType>

Returns data type of this expr needed for determining optimized int type of a value