Sequelize converted float to int NodeJS for MySQL DB while read

I have the following data in MySQL database:

Column: Volume
Value:
3495303.0
3495123.8
3484616.8
3482624.8
3474865.5
3434217.5
3407878.0

I use the following code to read from the database:

let query = {
    where: {
        id: id
    },
    order: [
        ['time', 'DESC']
    ],
}
let result = await markets.findAll(query);

At the following is markets.js

let markets = dbConnection.connection.define(
    'markets', {
        ...,
        volume: Sequelize.FLOAT,
        ...,
    }, {
        timestamps: false
    }
);

module.exports = markets;

However, when column "volume" is read from the database, all the number is converted into int rather than float. I manually executed SQL script generated by Sequelize, and I can see the value of volume has decimals.

However, when the data is loaded into my JSON object "result", the value for volume becomes integer.

I have tried with changing the definition in markets.js from

volume: Sequelize.FLOAT,

to

volume: Sequelize.DOUBLE,

But it does not change a thing. The definition of volume in MySQL is:

volume         float