摘要:
extern crate r2d2; use std::{thread, io::Read}; use r2d2_postgres::{postgres::{NoTls, GenericClient, SimpleQueryRow, SimpleQueryMessage}, PostgresConn 阅读全文
摘要:
#[tokio::main] async fn main()->Result<()> { let m = read_excel("abc.xlsx", 1, "Sheet1").unwrap(); let ctx = SessionContext::new(); ctx.register_table 阅读全文