Struct Substring 

pub struct Substring {}

Trait Implementations

impl Debug for Substring

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl ScalarFunction for Substring

fn call<'life0, 'life1, 'life2, 'async_trait>( &'life0 self, _context: &'life1 ExpressionEvaluationContext<'_>, expression: &'life2 FunctionExpression, args: Vec<VariableValue>, ) -> Pin<Box<dyn Future<Output = Result<VariableValue, FunctionError>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait,