Lupdo-mysql

Lupdo Driver For Mysql.
Api

Supported Databases

• mysql (v5.6, 5.7, 8)
• mariadb (v10.3, 10.4, 10.5, 10.6, 10.7, 10.8, 10.9, 10.10, 10.11)

Third Party Library

Lupdo-mysql, under the hood, uses stable and performant npm packages:

• mysql2

Usage

Base Example

const { createMysqlPdo } = require('lupdo-mysql');
// ES6 or Typescrypt
import { createMysqlPdo } from 'ludpo-mysql';

const pdo = createMysqlPdo(
    {
        host: 'localhost',
        port: 3306,
        user: 'user',
        password: 'password',
        database: 'database'
    },
    { min: 2, max: 3 }
);

const run = async () => {
    const statement = await pdo.query('SELECT 2');
    const res = statement.fetchArray().all();
    console.log(res);
    await pdo.disconnect();
};

run();

Driver Options

https://github.com/mysqljs/mysql#connection-options

Note The host option also accepts a list of host:port the pool will generate the connection using a random host from the list.

Mysql2 Overrides

By default Ludpo-mysql overrides user connection options with this:

{
    rowsAsArray: true,
    namedPlaceholders: true,
    dateStrings: false,
    supportBigNumbers: true,
    bigNumberStrings: true,
    decimalNumbers: false,
    typeCast: typeCast,
    timezone: 'Z',
    stringifyObjects: true,
    multipleStatements: false,
    trace: false,
    flags: [],
    queryFormat: undefined,
    debug: ${ATTR_DEBUG}
}

Lupdo-mysql has a custom type parser

• boolean are returned as number 1 or 0.
• bigint are returned as number or BigInt when necessary.
• binary and blob are returned as Buffer.
• zerofill numbers are returned as string.
• all geometry are returned as json string, coordinates are identified as x,y.
• all others types are always returned as string.

Parameters Binding

Lupdo-mysql ignore type definition of TypeBinding parameter.
Lupdo-mysql does not support array of parameters.

Mysql Named Parameter

Lupdo-mysql support named parameter with syntax :name, the support is guaranteed only if all placeholder have a binding.\

Mysql Numeric Parameter

Lupdo-mysql support numeric parameter with syntax ?.

Timezone and Charset

Lupdo-mysql default charset is UTF8MB4_UNICODE_CI, you can override through config.

Lupdo-mysql force mysql2 timezone to Z, javascript Date bindings for timestamp will be converted in String using UTC timezone.

Warning If you want to store an exact timestamp, you must bind a string or a UTC date like new Date(Date.UTC(2023, 0, 1, 23, 22, 20, 123)); using new Date('2023-01-01 23:22:20.123') will generate a UTC date based on OS timezone.

You can assign Mysql timezone through lupdo create callback in this way.

const { createMysqlPdo } = require('lupdo-mysql');
// ES6 or Typescrypt
import { createMysqlPdo } from 'ludpo-mysql';

const pdo = createMysqlPdo(
    {
        host: 'localhost',
        port: 3306,
        user: 'user',
        password: 'password',
        database: 'database'
    },
    {
        min: 2,
        max: 3,
        created: async (uuid, connection) => {
            await connection.query("SET time_zone='Europe/Rome';");
        }
    }
);

Kill Connection

Lupdo-mysql support kill query.