Display the distinct values in the GRADE column of the CUSTOMER table.
{
    "explanation": "I finalized the SQL query by analyzing the schema and context provided. The question asks for the distinct values in the GRADE column of the CUSTOMER table. I used the CUSTOMER table and applied the DISTINCT keyword to the GRADE column to get the distinct values.",
    "query" : "SELECT DISTINCT CUSTOMER.GRADE FROM CUSTOMER",
    "operation_kind" : "aggregation",
    "schema": "CUSTOMER",
    "confidence" : "100",
    "general_message": "Here are the distinct values in the GRADE column of the CUSTOMER table",
    "main_entity" : "customer"
}