Automation library · AI assistants

Generate SQL queries from schema only - AI-powered with OpenAI

Started by someone opening a chat with it. It calls services over plain HTTP rather than through connectors. 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, 1 loop or waits: a working afternoon to understand properly.

MediumCalls a model: OpenAIRetrieval

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20 stepsMedium: a working afternoon
1Branch: places the flow splits
1Loop or waits
0Services by connector: it calls them over plain HTTP

The flow

Starts it 2Model 3Logic 9Service 6

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

  1. 1Window Buffer MemoryMemory Buffer WindowModel
  2. 2OpenAI Chat ModelLm Chat Open AiModel
  3. 3When clicking "Test workflow"Manual triggerStarts it
  4. 4Chat TriggerChat triggerStarts it
  5. 5AI AgentAgentModel
  6. 6Get chinook.zip exampleHttp RequestService
  7. 7List all tables in a databaseSqliteService
  8. 8Extract SQL querySetLogic
  9. 9Extract zip fileCompressionService
  10. 10Pass table dataSplit In BatchesLogic
  11. 11Check if query existsIfLogic
  12. 12Save chinook.db locallyRead Write FileService
  13. 13Combine schema data and chat inputSetLogic
  14. 14Run PRAGMA queriesSqliteService
  15. 15Run SQL querySqliteService
  16. 16Combine query result and chat answerMergeLogic
  17. 17No Operation, do nothingNo OpLogic
  18. 18Add table name to outputSetLogic
  19. 19Format query resultsSetLogic
  20. 20Prepare final outputSetLogic

How it's built

Starts on
Someone opening a chat with it
Steps
20, with 1 branch, 1 loop or waits
Size
Medium: a working afternoon
Connects to
Nothing by connector; it calls services over plain HTTP
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, 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.