This is an example Docker Compose project for DuckDB data source with some tpch data. You can learn how to set up the Wren Engine with DuckDB data source to analyze your data.

How to use

Set up the platform in .env file. (linux/amd64, linux/arm64)
Configure settings in the etc/config.properties file.
Place your data in etc/data file after removing the sample data files.
Set up your initial SQL and session SQL in etc/duckdb-init.sql and etc/duckdb-session.sql files.
Place your MDL in etc/mdl file after removing the sample MDL file etc/mdl/sample.json.
- The mdl directory should contain only one json file.
Run the docker-compose in this directory.
```
docker compose --env-file .env up
```

Call the Wren Engine API to analyze your data with the request body as below.

URL

GET http://localhost:8080/v1/mdl/preview

Body: The manifest is the content of the MDL file.

   {
      "manifest": {
                     "catalog": "wren",
                     "schema": "tpch",
                     "models": [
                        {
                           "name": "Orders",
                           "tableReference": {
                              "catalog": "memory",
                              "schema": "tpch",
                              "table": "orders"
                           },
                           "columns": [
                              {
                                 "name": "orderkey",
                                 "expression": "o_orderkey",
                                 "type": "integer"
                              },
                              {
                                 "name": "custkey",
                                 "expression": "o_custkey",
                                 "type": "integer"
                              },
                              {
                                 "name": "orderstatus",
                                 "expression": "o_orderstatus",
                                 "type": "varchar"
                              },
                              {
                                 "name": "totalprice",
                                 "expression": "o_totalprice",
                                 "type": "float"
                              }
                           ],
                           "primaryKey": "orderkey"
                        }
                     ]
                  },
      "sql": "select * from Orders" 
   }