How to connect Google Sheets to Database

If you don't want to roll your own solution, check out SeekWell. It allows you to connect to databases and write SQL queries directly in Sheets.

A few other features:

• Quickly view all tables and columns in a database and get summary stats on a column with one click
• Query from the sidebar, a large pop-out window, or from within a cell Results can be sent to a specific cell, scratch sheet or directly to a pivot table
• Your query history is saved and viewable if you need to re-execute an older query
• You can save a set of queries on a “Run Sheet” to update multiple reports at once

Disclaimer: I made this.

As referred here, you can use the JDBC services of Google Apps Scripts. You will have to write a script that populates your spreadsheet with data from the JDBC service.

Read from the database

This example demonstrates how to read a large number of records from the database, looping over the result set as necessary.

// Replace the variables in this block with real values.
var address = 'database_IP_address';
var user = 'user_name';
var userPwd = 'user_password';
var db = 'database_name';

var dbUrl = 'jdbc:mysql://' + address + '/' + db;

// Read up to 1000 rows of data from the table and log them.
function readFromTable() {
  var conn = Jdbc.getConnection(dbUrl, user, userPwd);

  var start = new Date();
  var stmt = conn.createStatement();
  stmt.setMaxRows(1000);
  var results = stmt.executeQuery('SELECT * FROM entries');
  var numCols = results.getMetaData().getColumnCount();

  while (results.next()) {
    var rowString = '';
    for (var col = 0; col < numCols; col++) {
      rowString += results.getString(col + 1) + '\t';
    }
    Logger.log(rowString)
  }

  results.close();
  stmt.close();

  var end = new Date();
  Logger.log('Time elapsed: %sms', end - start);
}

Hope this helps!