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workflows/Synchronize Excel or Google Sheets with Postgres (bi-directional)-8457/synchronize_excel_or_google_sheets_with_postgres_bi-directional_.json

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+{"meta":{"instanceId":"04c7c3f1743831184e4a6edaf1f906dbab0c745cc98b8af3ef7660bbefe74cb4"},"nodes":[{"id":"e6bc660d-99b9-4321-ad7b-73f4b73a80f9","name":"Sticky Note2","type":"n8n-nodes-base.stickyNote","position":[-656,-320],"parameters":{"color":6,"width":976,"height":752,"content":"## Synchronize Excel Sheet with Postgres Database"},"typeVersion":1},{"id":"9a97bb0b-9428-424f-952c-0d83dca0e94f","name":"Sanitize Date","type":"n8n-nodes-base.code","position":[-96,16],"parameters":{"jsCode":"return items.map(item => {\n  const inputDate = item.json[\"date\"];\n  let formattedDate = null;\n  let dateObj;\n\n  // Handle Excel serial number\n  if (typeof inputDate === \"number\") {\n    const baseDate = new Date(Date.UTC(1899, 11, 30));\n    baseDate.setDate(baseDate.getDate() + inputDate);\n    dateObj = baseDate;\n  }\n\n  // Handle string format\n  else if (typeof inputDate === \"string\") {\n    const parsed = new Date(inputDate);\n    if (!isNaN(parsed)) {\n      dateObj = parsed;\n    }\n  }\n\n  // Format date as MM/DD/YYYY\n  if (dateObj) {\n    const M = String(dateObj.getMonth() + 1).padStart(2, '0');\n    const D = String(dateObj.getDate()).padStart(2, '0');\n    const Y = dateObj.getFullYear();\n    formattedDate = `${M}/${D}/${Y}`;\n  }\n\n  item.json[\"date\"] = formattedDate;\n  return { json: item.json };\n});\n"},"typeVersion":2},{"id":"71ef2eee-cb60-48ad-9050-df5a27f1a568","name":"Click Sync Excel -> DB","type":"n8n-nodes-base.manualTrigger","position":[-576,-176],"parameters":{},"typeVersion":1},{"id":"a3a85552-617f-4aa2-b29f-2d7196c7148c","name":"Exec Sync Excel -> DB","type":"n8n-nodes-base.executeWorkflowTrigger","position":[-576,16],"parameters":{"inputSource":"passthrough"},"typeVersion":1.1},{"id":"a17a319e-ef1e-4a2a-b5f4-302628b811c5","name":"Schedule Sync Excel -> DB","type":"n8n-nodes-base.scheduleTrigger","position":[-576,208],"parameters":{"rule":{"interval":[{}]}},"typeVersion":1.2},{"id":"705234f6-2f3b-45fd-a072-09da5ea65ce1","name":"Get Table","type":"n8n-nodes-base.microsoftExcel","position":[-256,16],"parameters":{"limit":200,"table":{"__rl":true,"mode":"list","value":"","cachedResultUrl":"","cachedResultName":"Clients"},"filters":{},"resource":"table","workbook":{"__rl":true,"mode":"list","value":"","cachedResultUrl":"","cachedResultName":""},"operation":"getRows","worksheet":{"__rl":true,"mode":"list","value":"","cachedResultUrl":"","cachedResultName":"CLIENTS"}},"credentials":{"microsoftExcelOAuth2Api":{"id":"","name":""}},"typeVersion":2.1},{"id":"b674a99d-e5a1-45d4-9092-e9b66a7943f8","name":"Upsert Table","type":"n8n-nodes-base.postgres","position":[80,16],"parameters":{"table":{"__rl":true,"mode":"list","value":"clients","cachedResultName":"clients"},"schema":{"__rl":true,"mode":"list","value":"public","cachedResultName":"public"},"columns":{"value":{"no":0},"schema":[{"id":"no","type":"number","display":true,"removed":false,"required":true,"displayName":"no","defaultMatch":false,"canBeUsedToMatch":true}],"mappingMode":"autoMapInputData","matchingColumns":["no"],"attemptToConvertTypes":false,"convertFieldsToString":false},"options":{},"operation":"upsert"},"credentials":{"postgres":{"id":"","name":""}},"typeVersion":2.6},{"id":"30ed085e-d0ba-4271-a92e-61dece670542","name":"Sticky Note","type":"n8n-nodes-base.stickyNote","position":[-1264,-320],"parameters":{"width":592,"height":752,"content":"## Excel ↔ Database Synchronization\n\nThis workflow automates syncing between **Excel/Google Sheets** and a **Postgres DB**:  \n\n1. **Triggers** → Run manually, on schedule, or via another workflow.  \n2. **Fetch Data** → Reads rows from an Excel/Google Sheet table.  \n3. **Sanitize** → Fixes date formats and cleans data.  \n4. **Upsert into DB** → Ensures new/updated rows are saved without duplicates.  \n   - Column names in Excel/Sheets and the DB must **match exactly** for auto-mapping.  \n   - If not, you can manually map columns in the Postgres node.  \n5. **Two-way sync possible** → Extend workflow to push DB changes back into Excel.  \n\n⚡ **Use Case:** Perfect for companies relying heavily on spreadsheets but planning to transition toward dashboards or SaaS software. It keeps Excel in use while persisting data in a structured database.  \n\n"},"typeVersion":1}],"pinData":{},"connections":{"Get Table":{"main":[[{"node":"Sanitize Date","type":"main","index":0}]]},"Sanitize Date":{"main":[[{"node":"Upsert Table","type":"main","index":0}]]},"Exec Sync Excel -> DB":{"main":[[{"node":"Get Table","type":"main","index":0}]]},"Click Sync Excel -> DB":{"main":[[{"node":"Get Table","type":"main","index":0}]]},"Schedule Sync Excel -> DB":{"main":[[{"node":"Get Table","type":"main","index":0}]]}}}