Sync Shopify products and inventory levels to PostgreSQL
Intermediate Data Sync & Integration workflow for E-commerce & Retail
The Shopify trigger (products/update) delivers the full product on any change. A Set node maps the product header (product_id, title, vendor, product_type, status). A Code node expands the variants array into one item per variant — variant_id, sku, price and inventory_quantity — because inventory lives at the variant level. A Postgres upsert keeps the products table current keyed on product_id, and a second Postgres upsert keeps a variants table current keyed on variant_id, so a stock change updates exactly the right row. Both writes retry with backoff into a Postgres dead-letter table.
Key benefits
- ✓Product and stock changes mirror into Postgres within seconds
- ✓Per-variant rows mean inventory is queryable at the SKU level
- ✓Idempotent upserts keyed on product_id / variant_id
Use cases
- →A products/inventory table for dashboards or reordering logic
- →Feeding stock levels to an internal admin or warehouse
- →Detecting low stock in SQL rather than clicking through Shopify
Integrations
Workflow preview (7 nodes)
The template's actual node layout and connections. Node parameters and credential slots unlock with the download.
What's inside (7 nodes)
A look at the node types this workflow uses. No purchase required — full parameters and credentials are yours after you buy.
From download to running in 3 steps
- 1Import. In n8n, open Workflows → menu → “Import from File” and pick the downloaded JSON.
- 2Connect. Add your own credentials on the app nodes - n8n highlights exactly which ones need them.
- 3Activate. Run it once to test, then toggle Active. The automation is live.
What you'll learn
Production levelProduction-grade: idempotency, dead-letter handling, and reconciliation included.
- •Structuring a workflow as trigger, validate, act, and notify
- •Adding retries and an explicit error path to every external call
- •Keeping writes idempotent so re-runs stay safe
Every node carries its own documentation on the canvas, plus notes explaining why the architecture was built this way, a credential setup guide, troubleshooting, and three practice exercises. Sample data comes pinned to the trigger, so you can hit Execute and watch data flow before connecting a single account.
Common questions
What exactly do I get?
The complete, ready-to-import n8n workflow as a JSON file, delivered instantly after payment. Import it into your own n8n (cloud or self-hosted), add your credentials, and it runs.
How do I import it into n8n?
In n8n, open Workflows, click the three-dot menu, choose “Import from File”, and select the downloaded JSON. Then connect your own app credentials on the highlighted nodes.
Do I need anything else for it to work?
You need your own n8n instance and accounts/credentials for the apps this workflow connects to (Shopify, PostgreSQL). No coding is required.
What if it doesn't work for me?
If the file is faulty, won't import, or isn't as described, contact us within 7 days and we'll fix it or refund you - see our refund policy.
Can I modify or resell it?
You can freely adapt and use it in your own or your clients' projects. Reselling or redistributing the template file itself is not permitted.
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