teradatasql/samples/DecimalDigits.js

Teradata SQL Driver for Node.js

"use strict";
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    if (k2 === undefined) k2 = k;
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var __importStar = (this && this.__importStar) || function (mod) {
    if (mod && mod.__esModule) return mod;
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    __setModuleDefault(result, mod);
    return result;
};
Object.defineProperty(exports, "__esModule", { value: true });
const teradatasql = __importStar(require("teradatasql"));
const con = teradatasql.connect({ host: "whomooz", user: "guest", password: "please" });
try {
    const cur = con.cursor();
    try {
        cur.execute("create volatile table voltab (c1 integer, c2 decimal(15,8), c3 varchar(10)) on commit preserve rows");
        cur.execute("insert into voltab values (?, ?, ?)", [
            [123, Number("0.00000081"), "hello"],
            [456, null, "world"],
            [789, Number("1234567.89012345"), null],
        ]);
        let row;
        let rows;
        console.log("Without decimal.Decimal formatting, Row 1 Column 2 value is printed as 8.1E-7");
        cur.execute("select * from voltab order by 1");
        rows = cur.fetchall();
        for (let iRow = 0; iRow < rows.length; iRow++) {
            row = rows[iRow];
            if (row) {
                for (let iColumn = 0; iColumn < row.length; iColumn++) {
                    const value = row[iColumn];
                    console.log(`Row ${iRow + 1} Column ${iColumn + 1} value = ${value}`);
                }
            }
        }
        console.log("With decimal.Decimal formatting, Row 1 Column 2 value is printed as 0.00000081");
        cur.execute("select * from voltab order by 1");
        rows = cur.fetchall();
        if (cur.description) {
            for (let iRow = 0; iRow < rows.length; iRow++) {
                row = rows[iRow];
                if (row) {
                    for (let iColumn = 0; iColumn < row.length; iColumn++) {
                        let value = row[iColumn];
                        if (typeof value === "number") {
                            const n = Number(cur.description[iColumn][5]);
                            if (n > 0) {
                                value = value.toFixed(n);
                            }
                        }
                        console.log(`Row ${iRow + 1} Column ${iColumn + 1} value = ${value}`);
                    }
                }
            }
        }
    }
    finally {
        cur.close();
    }
}
finally {
    con.close();
}
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