Create auto update Google Sheet

 There are a few different ways to create an auto-updating Google Sheet, depending on your specific needs. Here are some options:

1. Google Apps Script: 

You can use Google Apps Script to set up a script that will automatically update your Google Sheet based on a schedule or trigger. For example, you could set up a script that runs on a timer and fetches new data from an external source, then updates the appropriate sheet in your Google Sheet document. You can create a new Google Apps Script project from your Google Sheet by going to Tools > Script editor.

2. Google Sheets add-ons: 

There are several add-ons available in the Google Workspace Marketplace that can help you automate updates to your Google Sheet. For example, the "Sheetgo" add-on can connect multiple Google Sheets and automatically update data between them.

3. Third-party tools: 

There are also third-party tools available that can help you create auto-updating Google Sheets. For example, Zapier can connect your Google Sheet to other apps and services, and trigger updates based on specific events or conditions.

To get started with any of these options, you'll need to have a basic understanding of how Google Sheets works and be comfortable with using automation tools. It's also important to make sure you're following best practices for managing data in your Google Sheet, such as using clear naming conventions and organizing your data in a logical way.

Example Google Sheet using Google Apps Script:

Here's an example of how to create an auto-updating Google Sheet using Google Apps Script:

1. Start by creating a new Google Sheet and adding some data to it. For this example, let's say you have a sheet called "Sales Data" with columns for "Date", "Product", and "Sales".

2. Open the Script Editor by going to Tools > Script editor in the menu bar.

3. Create a new script and add the following code:

```javascript

function updateSalesData() {

  var sheet = SpreadsheetApp.getActiveSpreadsheet().getSheetByName("Sales Data");

  var data = sheet.getDataRange().getValues();

  // Replace this with the code that fetches new data from an external source

  var newData = [

    ["2023-04-20", "Product A", 1000],

    ["2023-04-20", "Product B", 500],

    ["2023-04-20", "Product C", 750]

  ];

  // Append the new data to the existing data

  data = data.concat(newData);

  sheet.getRange(1, 1, data.length, data[0].length).setValues(data);

}

```

This code defines a function called `updateSalesData` that fetches new data from an external source (in this case, a hard-coded array of data) and appends it to the existing data in the "Sales Data" sheet.

4. Save the script and close the Script Editor.

5. Set up a trigger to run the `updateSalesData` function on a schedule. To do this, go to Edit > Current project's triggers in the Script Editor. Click the "Add trigger" button, select the `updateSalesData` function, and choose the schedule you want (e.g. every hour, every day, etc.).

Once you've set up the trigger, your Google Sheet will automatically update with new data on the schedule you've defined. Of course, you'll need to replace the hard-coded data with code that fetches real data from an external source for this example to be useful in a real-world scenario.