Struct ydb::Query

pub struct Query { /* private fields */ }

Query object

Implementations

impl Query

pub fn new<T: Into<String>>(query: T) -> Self

Create query with query text

pub fn with_params(self, params: HashMap<String, Value>) -> Self

Set query parameters

parameters is data, sent to YDB in binary form

Example with macros:

let query = Query::new("
DECLARE $val AS Int64;

SELECT $val AS res
").with_params(ydb_params!("$val" => 123 as i64));

Example full:

let mut params: HashMap::<String,Value> = HashMap::new();
params.insert("$val".to_string(), Value::from(123 as i64));
let query = Query::new("
DECLARE $val AS Int64;

SELECT $val AS res
").with_params(params);

Trait Implementations

impl Clone for Query

fn clone(&self) -> Query

Returns a copy of the value.

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

Performs copy-assignment from source.

impl From<&str> for Query

fn from(s: &str) -> Self

Converts to this type from the input type.

impl From<String> for Query

fn from(s: String) -> Self

Converts to this type from the input type.

impl FromStr for Query

type Err = YdbError

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<Self, Self::Err>

Parses a string s to return a value of this type.