Struct ScalarAddFunction

pub struct ScalarAddFunction;

Adds a scalar to each element of a vector.

Example

SELECT vec_to_string(vec_scalar_add(1, "[1, 2, 3]")) as result;

+---------+
| result  |
+---------+
| [2,3,4] |
+---------+

-- Negative scalar to simulate subtraction
SELECT vec_to_string(vec_scalar_add(-1, "[1, 2, 3]")) as result;

+---------+
| result  |
+---------+
| [0,1,2] |
+---------+

Trait Implementations

impl Clone for ScalarAddFunction

fn clone(&self) -> ScalarAddFunction

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ScalarAddFunction

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

Formats the value using the given formatter.

impl Default for ScalarAddFunction

fn default() -> ScalarAddFunction

Returns the “default value” for a type.

impl Display for ScalarAddFunction

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

Formats the value using the given formatter.

impl Function for ScalarAddFunction

fn name(&self) -> &str

Returns the name of the function, should be unique.

fn return_type( &self, _input_types: &[ConcreteDataType], ) -> Result<ConcreteDataType>

The returned data type of function execution.

fn signature(&self) -> Signature

The signature of function.

fn eval( &self, _func_ctx: FunctionContext, columns: &[VectorRef], ) -> Result<VectorRef>

Evaluate the function, e.g. run/execute the function.