{"action": "list", "input": {}}

{
  "action": "test",
  "input": {
    "connection": "MY_POSTGRES",
    "debug": true
  }
}

{
  "action": "discover",
  "input": {
    "connection": "MY_POSTGRES",
    "pattern": "public.*",
    "columns": true
  }
}

{
  "action": "set",
  "input": {
    "name": "MY_POSTGRES",
    "properties": {
      "type": "postgres",
      "host": "localhost",
      "user": "myuser",
      "database": "mydb"
    }
  }
}

sling conns list                              # List all
sling conns test MY_POSTGRES --debug          # Test
sling conns discover MY_POSTGRES --pattern "public.*"  # Discover
sling conns exec MY_POSTGRES -q "SELECT 1"    # Execute SQL

export MY_POSTGRES='host=localhost user=postgres dbname=mydb'

export MY_POSTGRES='postgresql://user:pass@host:5432/dbname'

# ~/.sling/env.yaml
connections:
  MY_POSTGRES:
    type: postgres
    host: localhost
    user: postgres
    password: ${PG_PASSWORD}
    database: mydb

  MY_S3:
    type: s3
    bucket: my-bucket
    access_key_id: ${AWS_ACCESS_KEY}
    secret_access_key: ${AWS_SECRET_KEY}

  MY_API:
    type: api
    spec: stripe
    secrets:
      api_key: ${STRIPE_API_KEY}

sling conns discover MY_PG --pattern "public.*"           # All in schema
sling conns discover MY_PG --pattern "sales.customer_*"   # With prefix
sling conns discover MY_S3 --pattern "data/*.csv"         # Files
sling conns discover MY_S3 --pattern "**/*.parquet" --recursive
sling conns discover MY_PG --pattern "public.users" --columns