Trait SqlConn 

pub trait SqlConn {
    // Required methods
    fn query(&mut self, sql: &str) -> Result<Table>;
    fn execute(&mut self, sql: &str, params: &[Cell]) -> Result<()>;
    fn placeholder(&self, n: usize) -> String;
    fn real_type(&self) -> &'static str;
}

The operations import_query/export_measure/refresh_sql_measure need from a connection. Implemented for &mut Backend (SQLite or Postgres) and, for backward compatibility with SQLite-only callers, &rusqlite::Connection.

Required Methods

fn query(&mut self, sql: &str) -> Result<Table>

fn execute(&mut self, sql: &str, params: &[Cell]) -> Result<()>

fn placeholder(&self, n: usize) -> String

Positional placeholder for the n-th (1-based) parameter.

fn real_type(&self) -> &'static str

SQL type keyword for a floating value column in CREATE TABLE.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl SqlConn for &Connection

fn query(&mut self, sql: &str) -> Result<Table>

fn execute(&mut self, sql: &str, params: &[Cell]) -> Result<()>

fn placeholder(&self, _n: usize) -> String

fn real_type(&self) -> &'static str

Implementors

impl SqlConn for &mut Backend