Trait taos_query::prelude::sync::Queryable

pub trait Queryable {
    type ResultSet: Fetchable;

    // Required methods
    fn query<T: AsRef<str>>(&self, sql: T) -> RawResult<Self::ResultSet>;
    fn query_with_req_id<T: AsRef<str>>(
        &self,
        sql: T,
        req_id: u64
    ) -> RawResult<Self::ResultSet>;
    fn write_raw_meta(&self, _: &RawMeta) -> RawResult<()>;
    fn write_raw_block(&self, _: &RawBlock) -> RawResult<()>;
    fn write_raw_block_with_req_id(&self, _: &RawBlock, _: u64) -> RawResult<()>;
    fn put(&self, data: &SmlData) -> RawResult<()>;

    // Provided methods
    fn exec<T: AsRef<str>>(&self, sql: T) -> RawResult<usize> { ... }
    fn exec_many<T: AsRef<str>, I: IntoIterator<Item = T>>(
        &self,
        input: I
    ) -> RawResult<usize> { ... }
    fn query_one<T: AsRef<str>, O: DeserializeOwned>(
        &self,
        sql: T
    ) -> RawResult<Option<O>> { ... }
    fn server_version(&self) -> RawResult<Cow<'_, str>> { ... }
    fn create_topic(
        &self,
        name: impl AsRef<str>,
        sql: impl AsRef<str>
    ) -> RawResult<()> { ... }
    fn create_topic_as_database(
        &self,
        name: impl AsRef<str>,
        db: impl Display
    ) -> RawResult<()> { ... }
    fn databases(&self) -> RawResult<Vec<ShowDatabase>> { ... }
    fn topics(&self) -> RawResult<Vec<Topic>> { ... }
    fn describe(&self, table: &str) -> RawResult<Describe> { ... }
    fn database_exists(&self, name: &str) -> RawResult<bool> { ... }
}

The synchronous query trait for TDengine connection.

Required Associated Types

type ResultSet: Fetchable

Required Methods

fn query<T: AsRef<str>>(&self, sql: T) -> RawResult<Self::ResultSet>

fn query_with_req_id<T: AsRef<str>>( &self, sql: T, req_id: u64 ) -> RawResult<Self::ResultSet>

fn write_raw_meta(&self, _: &RawMeta) -> RawResult<()>

fn write_raw_block(&self, _: &RawBlock) -> RawResult<()>

fn write_raw_block_with_req_id(&self, _: &RawBlock, _: u64) -> RawResult<()>

fn put(&self, data: &SmlData) -> RawResult<()>

Provided Methods

fn exec<T: AsRef<str>>(&self, sql: T) -> RawResult<usize>

fn exec_many<T: AsRef<str>, I: IntoIterator<Item = T>>( &self, input: I ) -> RawResult<usize>

fn query_one<T: AsRef<str>, O: DeserializeOwned>( &self, sql: T ) -> RawResult<Option<O>>

fn server_version(&self) -> RawResult<Cow<'_, str>>

Short for SELECT server_version() as String.

fn create_topic( &self, name: impl AsRef<str>, sql: impl AsRef<str> ) -> RawResult<()>

fn create_topic_as_database( &self, name: impl AsRef<str>, db: impl Display ) -> RawResult<()>

fn databases(&self) -> RawResult<Vec<ShowDatabase>>

fn topics(&self) -> RawResult<Vec<Topic>>

Topics information by SELECT * FROM information_schema.ins_topics sql.

Compatibility

This is a 3.x-only API.

fn describe(&self, table: &str) -> RawResult<Describe>

fn database_exists(&self, name: &str) -> RawResult<bool>

Check if database exists

Object Safety

This trait is not object safe.

Implementors