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Excel to Microsoft SQL Server integration

Connect Excel to Microsoft SQL Server and automatically sync your spreadsheet/file data. Weld extracts Worksheets, Rows, and Named Ranges from Excel, loads them into Microsoft SQL Server, and lets you transform the data using SQL or dbt, no custom scripts required.

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4.8 on G2
ExcelSource
WeldWeld
Microsoft SQL ServerWarehouse
Weld · New sync
ExcelSourceExcelConnected
Tables to sync

Your own tables, picked when you set up the sync.

  • Extract
  • Load
  • Keep in sync
Microsoft SQL ServerDestinationMicrosoft SQL ServerReady
excel schema
  • excel.Synced
  • excel.Syncing
  • excel.Synced
  • excel.Synced

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How it works

How to set up Excel to Microsoft SQL Server in Weld.
In the app, with the API or an agent.

Setup guideAPI guideMCP docs
Weld · New Excel sync
ExcelNew connectionExcelAuthorised
Connection nameexcel
AuthorizeOpens Excel to grant read access
Use cases

Why sync Excel to Microsoft SQL Server?
Ready for analysis.

Centralizing your Excel data in Microsoft SQL Server lets you join it with other data sources for cross-platform analytics and deeper insights.

Build reliable dashboards and reports by querying Excel data directly in Microsoft SQL Server using SQL or your preferred BI tool.

  • Centralized data warehouse

    Bring Excel data into Microsoft SQL Server alongside other sources to create a single source of truth for your organization.

  • Automated reporting

    Replace manual exports and spreadsheet-based reporting with automated pipelines from Excel to Microsoft SQL Server. Connect BI tools like Looker, Metabase, or Power BI.

Data

What data can you sync?
From Excel to Microsoft SQL Server.

Weld syncs the following data objects from Excel into Microsoft SQL Server. The exact tables and fields depend on your Excel configuration and the permissions granted during setup.

  • Worksheets
  • Rows
  • Named Ranges
Weld MCP server

Ask your agent.
It queries Microsoft SQL Server for you.

Connect Claude, Cursor, ChatGPT or your own agent to Weld over MCP. It reads the Excel context, finds the tables it needs and runs the query in Microsoft SQL Server.

Set up the MCP serverClaudeCursorChatGPTGemini
Claude CodeOpus 5
>

Which Excel tables do we have in Microsoft SQL Server, and which is the largest?

Looking up what Weld has synced from Excel.

●weld·search_available_references
⎿raw.excel.*
tables, columns and freshness
●weld·get_reference_schema
⎿columns, types and nullability
●weld·run_query
⎿select count(*) from {{raw.excel.…}}
submitted
●weld·get_query_status
⎿DONE
●weld·get_query_result
⎿rows returned
✓Answered from Excel data in Microsoft SQL Server
>Ask about your Excel data
Under the hood

Technical considerations.
What to expect.

Reverse ETL

ELT vs. reverse ETL: Excel and Microsoft SQL Server

ELT (Extract, Load, Transform) moves data from Excel into Microsoft SQL Server for analysis. This is the approach shown on this page, and the one to use for dashboards, reports, and data models.

Reverse ETL works the other direction: it pushes enriched data from Microsoft SQL Server back into Excel. For example, you could sync computed lead scores or customer segments from your warehouse into Excel to personalize outreach.

Weld supports both directions, so you can build a complete data loop between Excel and Microsoft SQL Server.

Microsoft SQL Server to Excel
Incremental syncing
Weld uses incremental syncing where supported by the Excel API, loading only new and updated records to minimize data transfer and warehouse costs.
Schema handling
Weld automatically manages schema changes. If Excel adds new fields, they're detected and added to the corresponding Microsoft SQL Server tables.
Data freshness
Sync frequency depends on your Weld plan. Most connectors support schedules from every 5 minutes up to daily intervals.
Security
All data is encrypted in transit (TLS) and at rest. Weld is SOC 2 Type II compliant and supports IP whitelisting for database connections.
Resources

Keep reading.
Guides, docs and schema.

Documentation

Excel setup guide

How to connect Excel to Weld, step by step.

Documentation

Microsoft SQL Server setup guide

How to connect Microsoft SQL Server to Weld, step by step.

Connector

Excel connector

Everything Weld does with Excel.

Connector

Microsoft SQL Server connector

Everything Weld does with Microsoft SQL Server.

FAQ

Common questions.
About Excel to Microsoft SQL Server.

Start syncing Excel to Microsoft SQL Server.

Set up your Excel data pipeline in minutes. No credit card required. Free for 14 days.

ExcelSource
WeldWeld
Microsoft SQL ServerWarehouse
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Related

Related integrations.
More with Excel and Microsoft SQL Server.

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