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ExportCSVResult.ts
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ExportCSVResult.ts
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// Copyright 2023 by Teradata Corporation. All rights reserved.
// This sample program demonstrates how to export the results from a select statement into a csv file.
// Run "npm install csv" to install the CSV module
import * as fs from "fs";
import { parse } from "csv-parse/sync";
// @ts-ignore
import { TeradataConnection, TeradataCursor } from "teradatasql";
const con: TeradataConnection = new TeradataConnection();
con.connect({ host: "whomooz", user: "guest", password: "please" });
const cur: TeradataCursor = con.cursor();
cur.execute("create volatile table voltab (c1 integer, c2 varchar(100)) on commit preserve rows");
console.log("Inserting data");
cur.execute("insert into voltab values (?, ?)", [
[1, ""],
[2, "abc"],
[3, "def"],
[4, "mno"],
[5, ""],
[6, "pqr"],
[7, "uvw"],
[8, "xyz"],
[9, ""],
]);
const sFileName: string = "dataJs.csv";
console.log("Exporting table data to file", sFileName);
cur.execute("{fn teradata_write_csv(" + sFileName + ")}select * from voltab order by 1");
try {
console.log("Reading file", sFileName);
const sRows: string[][] = parse(fs.readFileSync(sFileName, { encoding: "utf-8" }));
console.log(sRows);
} finally {
fs.unlinkSync(sFileName);
}
cur.close();
con.close();