40 lines
926 B
Rust
40 lines
926 B
Rust
use libtaos::*;
|
|
|
|
fn taos_connect() -> Result<Taos, Error> {
|
|
TaosCfgBuilder::default()
|
|
.ip("localhost")
|
|
.user("root")
|
|
.pass("taosdata")
|
|
.db("power")
|
|
.port(6030u16)
|
|
.build()
|
|
.expect("TaosCfg builder error")
|
|
.connect()
|
|
}
|
|
|
|
#[tokio::main]
|
|
async fn main() -> Result<(), Error> {
|
|
let taos = taos_connect().expect("connect error");
|
|
let result = taos.query("SELECT ts, current FROM meters LIMIT 2").await?;
|
|
// print column names
|
|
let meta: Vec<ColumnMeta> = result.column_meta;
|
|
for column in meta {
|
|
print!("{}\t", column.name)
|
|
}
|
|
println!();
|
|
// print rows
|
|
let rows: Vec<Vec<Field>> = result.rows;
|
|
for row in rows {
|
|
for field in row {
|
|
print!("{}\t", field);
|
|
}
|
|
println!();
|
|
}
|
|
Ok(())
|
|
}
|
|
|
|
// output:
|
|
// ts current
|
|
// 2022-03-28 09:56:51.249 10.3
|
|
// 2022-03-28 09:56:51.749 12.6
|