Airtable vs Shopify

We devised SwiftERM to generate additional income from existing consumers on ecommerce websites. Available for those using Shopify, Magento, Woocommerce or Opencart, it runs in alongside (not instead of) existing email marketing software like Mailchimp, Drupal or Emarsys. It is 100% automatic so needs zero additional staff. It uses predictive analytics to identify imminent consumer purchases. The average additional turnover achieved is 10.5%. It is the only software in the world authorised to send Trustpilot to send product ratings in outbound emails. Developers and ecommerce retailers are invited to try to it for free, to establish viability this predictive analytics system is. SwiftERM is a certified Microsoft Partner MPN ID 6197468.

I'm trying to set up an ideally "no- code" way to have a backend of 3 different tables and be able to find a value in table #3 (contains businesses & cities) by first finding a record in table #1 (7,000+ zip codes) that corresponds to a city (table #2 has the unique cities), and then finding which businesses are located in these cities ( in this specific, original zipcode lookup). And return the business and a description via an API to a front-end results page, which happens to be a WordPress page - but doesn't need to be. I've tried Airtable's API, AirPress (a finicky WordPress plugin for Airtable's API), and I've looked at Sheetsu and a similar spreadsheet as backend and a simple API. I run into the issue where they work fine when you just need to query 1 table, but when you need to use the result from that query in another query to a different table. I'm back in SQL land - where sure it could be done with SQLite - needing to probably create an intersection table or a JOIN and build an API off of that. Is there a way to accomplish what I want without going back to SQL queries and some API?

we've had alot of shopify clients and do alot of those website builds, but we decided a little while back to transfer any client possible to woocommerce, for our e-com web development, as there is alot more functionality available with zoo-commerce. you can have a look at our examples and even our own website in the link provided.