How to Create LWC data table

Creating a data table in a Lightning Web Component (LWC) involves the use of the lightning-datatable component, which is a part of the Lightning Components framework. Here's an example of how to create a basic data table in an LWC:

1. In your LWC's HTML file, add the following code to create a basic data table:

<template>
    <lightning-datatable
        data={data}
        columns={columns}>
    </lightning-datatable>
</template>

2. In your LWC's JavaScript file, import the necessary modules, and define the data and columns properties:

import { LightningElement, track } from 'lwc';
export default class MyDataTable extends LightningElement {
 @track data = [  
{ id: 1, name: 'John Doe', email: 'john.doe@example.com' },
 { id: 2, name: 'Jane Smith', email: 'jane.smith@example.com' },
 { id: 3, name: 'Bob Johnson', email: 'bob.johnson@example.com' }, 
 ]; 
 @track columns = [
        { label: 'Name', fieldName: 'name' },  { label: 'Email', fieldName: 'email' },
 ];
 }

3. The data property is an array of objects that represents the data that will be displayed in the data table. Each object in the array should have properties that match the fieldName properties in the columns array.

4. The columns property is an array of objects that defines the columns that will be displayed in the data table. Each object in the array should have a label property that defines the column's label, and a fieldName property that defines the property of the data objects that will be displayed in that column.

5. You can run the component in the Salesforce environment and it will show the data table with the data and columns specified.

6. You can add sorting, pagination and filtering functionalities to the data table by adding respective attributes to the lightning-datatable component.

Note: This is a simple example and you can customize the data table by adding more features like sorting, pagination, and filtering, customizing the appearance of the table using CSS, and adding custom actions to the rows. The lightning-datatable component has many attributes you can use to customize the component to meet your requirements.