@Forty-boy/SQL

A MySQL Library for Node.js

Currently creating this as a hobby project, but we'll see where it goes.

Installing the Project

1. npm install @forty-boy/sql OR yarn add @forty-boy/sql
2. const Forty = require('@forty-boy/sql')
   OR
   import Forty from '@forty-boy/sql'
   OR
   import { Table } from '@forty-boy/sql'
3. Create .env file at root with values for corresponding keys in .env-example found here

Cloning the Project

1. Clone the repository here
2. Run npm install OR yarn install
3. Create .env file at root with values for corresponding keys in .env-example
4. Run npm run dev OR yarn run dev

Changelog

Version 1.1.1

• Can now run all Table methods Asynchronously by adding Async suffix
  • E.g. userTable.create(...args) can now be written as await userTable.createAsync(...args)

Version 1.1.0

• Completely refactored
  • Note Almost everything syntax wise has stayed the same.
  • Removed unnecessary dependencies
  • Now using a chaining convention, although you may not ever need to touch it.
  • Now uses Query as an abstraction.
    • Now use TableQuery or DatabaseQuery
  • Can now create, switch, or drop Databases
  • SqlService is now an abstraction
    • Now can use TableService or DatabaseService

Version 1.0.5

• SqlService can now drop tables
• SqlService can now alter tables

Version 1.0.4

• Fixed issue with Join method

Version 1.0.3

• Can now run find with just condition
• Fixed update query updating all rows
• Fixed delete query deleting all rows

Version 1.0.2

• Can now run find() on a Table class with just the columns you want to receive with no condition arguments
  • E.g. userTable.find({ columns: ['id', 'createdAt'] });

Version 1.0.1

• Can now run find() on a Table class to return all results
• Can now create Unique columns when creating a table

Examples

Creating a Table Schema

For the rest of these examples we'll be using this user table

class UserSchema {
  id?: number; // This is nullable for Create calls
  fullName: string;
  dateOfBirth: Date;

  constructor(id: number, fullName: string, dateOfBirth: Date) {
    this.id = id;
    this.fullName = fullName;
    this.dateOfBirth = dateOfBirth;
  }
}

type UserDateset = Array<UserSchema>;

export class UserTable extends Table<UserSchema> {
  constructor(tableName: string, users: UserDataset = []) {
    super(tableName, UserSchema, users);
  }
}

---

Create Table

async createProducts(): Promise<void> {
  return new Promise((resolve, reject) => {
    try {
      const tableService = new TableService('products');
      tableService.create({
        columns: [
          {
            name: 'id',
            type: 'INT',
            size: 11,
            primaryKey: true,
            autoIncrement: true,
            nullable: false,
          },
          { name: 'name', type: 'VARCHAR', size: 255, default: 'Test Product' },
          { name: 'price', type: 'INT', size: 11 },
          { name: 'createdAt', type: 'DATETIME' },
          {
            name: 'createdBy',
            type: 'INT',
            nullable: false,
            foreignKey: {
              referenceId: 'id',
              referenceTable: 'users',
            },
          },
        ]
      }).subscribe((res) => resolve());
    } catch (err) {
      return reject(err);
    }
  })
}

---

Add Values to Table

userTable.insert({
  fullName: 'Blaze Rowland',
  dateOfBirth: new Date(1997, 11, 14),
});

---

Find, Find one, or Find a specific amount of Values

userTable
  .find({
    columns: ['id', 'fullName'],
    condition: { id: 1 },
  })
  .subscribe((users) => console.log(users));

userTable
  .findOne({
    columns: ['id'],
    condition: {
      fullName: 'Blaze Rowland',
    },
  })
  .subscribe((user) => console.log(user));

userTable
  .findAmount({
    columns: ['id'],
    condition: {
      fullName: 'Blaze Rowland',
    },
  }, 3)
  .subscribe((user) => console.log(user));

---

Update Values

userTable
  .update({
    values: { fullName: 'Rylee Brown' },
    condition: { id: 1 },
  })
  .subscribe((res) => console.log(res));

---

Find and Update Values

userTable
  .findOne({
    columns: ['id'],
    condition: {
      id: 1,
    },
  })
  .subscribe({
    next: (user) =>
      userTable
        .update({
          values: { fullName: 'Forrest Rowland' },
          condition: { id: user.id },
        })
        .subscribe((res) => console.log(res)),
  });

---

Find and Add to Relational Table

userTable
  .findOne({
    columns: ['id'],
    condition: {
      fullName: 'Forrest Rowland',
    },
  })
  .subscribe({
    next: (user) => {
      productTable
        .insert({
          name: 'Pacifier',
          price: 5,
          createdAt: new Date(),
          createdBy: user.id,
        })
        .subscribe((res) => console.log(res));
    },
  });

---

Delete from Table

productTable.delete({ id: 1 });

---

Join Tables

  productTable
  .join({
    joinType: 'INNER JOIN',
    columnsToSelect: [
      { column: 'name' },
      { column: 'price' },
      { column: 'fullName', as: 'userName', table: userTable.tableName },
      { column: 'dateOfBirth', table: userTable.tableName },
    ],
    columnsOn: [
      {
        from: { column: 'id', table: userTable.tableName },
        to: { column: 'createdBy', table: productTable.tableName },
      },
    ],
  })
  .subscribe((res) => console.log(res));

  productTable
  .join({
    joinType: 'LEFT JOIN',
    columnsToSelect: [
      { column: 'name' },
      { column: 'price' },
      { column: 'fullName', as: 'userName', table: userTable.tableName },
      { column: 'dateOfBirth', table: userTable.tableName },
    ],
    columnsOn: [
      {
        from: { column: 'id', table: userTable.tableName },
        to: { column: 'createdBy', table: productTable.tableName },
      },
    ],
  })
  .subscribe((res) => console.log(res));

  productTable
  .join({
    joinType: 'RIGHT JOIN',
    columnsToSelect: [
      { column: 'name' },
      { column: 'price' },
      { column: 'fullName', as: 'userName', table: userTable.tableName },
      { column: 'dateOfBirth', table: userTable.tableName },
    ],
    columnsOn: [
      {
        from: { column: 'id', table: userTable.tableName },
        to: { column: 'createdBy', table: productTable.tableName },
      },
    ],
  })
  .subscribe((res) => console.log(res));

---

Union Tables

productTable
  .union({
    columns: ['id', 'name'],
    conditions: {
      id: '1',
    },
    all: true,
    union: {
      table: userTable.tableName,
      columns: ['id', 'fullName'],
      conditions: {
        id: '1',
      },
    },
  })
  .subscribe((res) => console.log(res));

Alter Tables

Create an instance of the SQL Service

const sqlService = new SqlService('users')

Add Columns:

userTable.alter({
  columnsToAdd: [
    {
      name: 'location',
      type: 'VARCHAR',
      size: 255,
    }
  ]
}).subscribe((res) => console.log(res))

Alter Columns:

userTable.alter({
  columnsToModify: [
    {
      name: 'firstName',
      newName: 'fullName',
      type: 'VARCHAR',
      size: 255,
    },
  ],
});

Remove Columns:

userTable.alter({
  columnsToRemove: [
    {
      name: 'lastName',
    },
  ],
});

columnsToAdd, columnsToAlter, and columnsToRemove can all be added to the alterAbleQuery like so:

userTable.alter({
  columnsToAdd: [
    {
      name: 'location',
      type: 'VARCHAR',
      size: 255,
    },
  ],
  columnsToModify: [
    {
      name: 'firstName',
      newName: 'fullName',
      type: 'VARCHAR',
      size: 255,
    },
  ],
  columnsToRemove: [
    {
      name: 'lastName',
    },
  ],
});

Drop Tables

userTable().drop();

Database

Creating an instance of the Database class

const fortyDatabase = new Database('forty');

Creating a database

fortyDatabase.create();

Switching databases

Option 1

fortyDatabase.databaseName = 'newDatabase';
fortyDatabase.switch();

Option 2

fortyDatabase.switch('newDatabase');

Dropping a database

Option 1

// This will throw an error if you haven't FIRST switched databases.

fortyDatabase.delete();

Option 2

fortyDatabase.delete('newDatabase');