Query Google Sheets/CSV data through an AI Agent using PostgreSQL

Want to see it in action? Watch the full breakdown here: 📺 Video Link Template Description This n8n workflow empowers you to query structured financial data from Google Sheets or CSV files using AI-generated SQL. Unlike traditional vector database solutions that falter with numerical queries, this template leverages PostgreSQL for efficient data storage and an AI agent to dynamically create optimized SQL queries from natural language inputs. What It Does Retrieves data from Google Sheets or CSV files Infers the data schema and builds a PostgreSQL table Populates the table with your data Uses an AI agent to translate natural language questions into SQL queries Returns precise numerical resul

Help me set up the n8n workflow "Query Google Sheets/CSV data through an AI Agent using PostgreSQL" (https://n8n.io/workflows/3079). It uses: Google Sheets, Postgres, Code, AI Agent, Call n8n Workflow Tool, Google Gemini Chat Model. Import the template JSON into my n8n instance, list every credential I need to create, and walk me through testing it.