What episode was the last appearance of the character, rikki sandoval?
CREATE TABLE table_11240028_3 (last_appearance VARCHAR, character VARCHAR)
SELECT last_appearance FROM table_11240028_3 WHERE character = "Rikki Sandoval"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_11240028_3 (last_appearance VARCHAR, character VARCHAR) Question: What episode was the last appearance of the character, rikki sandoval? [/INST] SELECT last_appearance FROM table_11240028_3 WHERE character = "Rikki Sandoval" </s>