Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_93 (surface VARCHAR, partner VARCHAR, date VARCHAR)

### Question ###
Which surface had a partner of Sandrine Testud on November 14, 1999?

### Accurate SQL ###

SELECT surface FROM table_name_93 WHERE partner = "sandrine testud" AND date = "november 14, 1999"