op.substring sequelize code example

Example 1: op in sequelize

//First method
// selecting authorityId :12 or 13
model.findAll({
  where: {
    [Op.or]: [
      { authorId: 12 },
      { authorId: 13 }
    ]
  }
});

Example 2: SEQUELIZE OR

"SELECT * FROM Student WHERE LastName='Doe' OR FirstName in ("John","Jane") OR Age>18"