Automation library · Data collection

Sql queries from schema with OpenAI and MySQL

Started by someone opening a chat with it, and works across MySQL. It puts OpenAI behind a retrieval step, so answers are drawn from documents you supply rather than from the model alone. 20 steps, 1 branch: a working afternoon to understand properly.

MediumCalls a model: OpenAIRetrieval

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20 stepsMedium: a working afternoon
1Branch: places the flow splits
0Loops or waits
1Service it connects to

The flow

Starts it 2Model 3Logic 8Service 7

The steps in the order they run, from what starts it.

  1. 1OpenAI Chat ModelLm Chat Open AiModel
  2. 2Window Buffer MemoryMemory Buffer WindowModel
  3. 3Chat TriggerChat triggerStarts it
  4. 4When clicking "Test workflow"Manual triggerStarts it
  5. 5AI AgentAgentModel
  6. 6Load the schema from the local fileRead Write FileService
  7. 7List all tables in a databaseMy SqlService
  8. 8Extract SQL querySetLogic
  9. 9Extract data from fileExtract From FileService
  10. 10Extract database schemaMy SqlService
  11. 11Check if query existsIfLogic
  12. 12Combine schema data and chat inputSetLogic
  13. 13Add table name to outputSetLogic
  14. 14Run SQL queryMy SqlService
  15. 15Combine query result and chat answerMergeLogic
  16. 16No Operation, do nothingNo OpLogic
  17. 17Convert data to binaryConvert To FileService
  18. 18Format query resultsSetLogic
  19. 19Prepare final outputSetLogic
  20. 20Save file locallyRead Write FileService

How it's built

Starts on
Someone opening a chat with it
Steps
20, with 1 branch
Size
Medium: a working afternoon
Connects to
MySQL
Model
OpenAI
Retrieval
Answers are drawn from documents you supply, not from the model alone

Questions

What does it need to run?

An n8n account, plus your own MySQL account, and a key for OpenAI. You connect your own accounts after importing it; none are included.

What starts it?

It starts on someone opening a chat with it.

Does it use AI?

Yes. It calls OpenAI. Its answers draw on documents you give it, not on the model alone. Model calls are billed by the provider, not by n8n.

How long does it take to set up?

Plan an afternoon. 20 steps is enough that you should read each one before running it.

How do I import it?

Copy the workflow, open a new workflow in n8n and paste. The steps appear on the canvas, ready for your own accounts.

Before you run it

Nothing here has been tested by us. It is somebody's working automation, read and described from its own steps. Treat the connections it wants as a list of accounts it will touch, and read the 20 steps before you point it at anything that matters.