human
Considering the provided database schema and associated query, produce SQL code to retrieve the answer to the query. 
###Database Schema: Date, Tournament, Surface, Opponent in final, Score, Prize Money
###Question: What is the date of the match on clay with score of 6-3 2-6 6-4?
gpt
SELECT Date FROM table WHERE Surface = clay AND Score = 6-3 2-6 6-4