At what age did Roy Emerson complete the Grand Slam?
CREATE TABLE table_197638_6 (age INTEGER, player VARCHAR)
SELECT MAX(age) FROM table_197638_6 WHERE player = "Roy Emerson"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_197638_6 (age INTEGER, player VARCHAR) Question: At what age did Roy Emerson complete the Grand Slam? [/INST] SELECT MAX(age) FROM table_197638_6 WHERE player = "Roy Emerson" </s>