What functions were released on 2011-06-23?
CREATE TABLE table_18138132_2 (
    function VARCHAR,
    release_date VARCHAR
)
SELECT function FROM table_18138132_2 WHERE release_date = "2011-06-23"
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: What functions were released on 2011-06-23? ### Input: CREATE TABLE table_18138132_2 (
    function VARCHAR,
    release_date VARCHAR
) ### Response: SELECT function FROM table_18138132_2 WHERE release_date = "2011-06-23"