Struct Client 

pub struct Client {
    pub connection: Arc<Mutex<AsyncConnection>>,
}

A client for interacting with Vertica database

Fields

connection: Arc<Mutex<AsyncConnection>>

用于与 Vertica 数据库进行异步连接的连接对象，使用 Arc 和 Mutex 实现多线程安全

Implementations

impl Client

pub async fn new(config: ConnectionConfig) -> Result<Self>

Create a new client from connection configuration

pub async fn from_url(url: &str) -> Result<Self>

Create a new client from URL

pub async fn query(&self, sql: &str) -> Result<QueryResult>

Query the database

pub async fn execute(&self, sql: &str) -> Result<u64>

Execute a SQL statement (INSERT, UPDATE, DELETE, etc.)

pub async fn prepare(&self, query: &str) -> Result<Statement>

Prepare a SQL statement

pub async fn execute_with_params( &self, query: &str, params: &[Value], ) -> Result<u64>

Execute a query with parameters

pub async fn execute_prepared( &self, stmt: &Statement, params: &[Value], ) -> Result<QueryResult>

Execute a prepared statement with parameters

pub async fn transaction(&self) -> Result<Transaction>

Begin a transaction

pub async fn connection_state(&self) -> ConnectionState

Get connection state

pub async fn is_ready(&self) -> bool

Check if connection is ready

pub async fn server_parameters(&self) -> HashMap<String, String>

Get server parameters

pub async fn ping(&self) -> Result<()>

Ping the server to check connectivity

pub async fn execute_batch(&self, queries: &[&str]) -> Result<Vec<QueryResult>>

Execute a batch of queries

pub async fn close(&self) -> Result<()>

Close the connection

Trait Implementations

impl Clone for Client

fn clone(&self) -> Client

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Client

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

Formats the value using the given formatter.