query: SELECT last_name FROM staff WHERE email_address LIKE "%wrau%"
question: Are Finding the last name of the staffs whose emails address are containing "wrau".
query_toks: SELECT last_name FROM staff WHERE email_address LIKE `` % wrau % ''
query_toks_no_value: select last_name from staff where email_address like value
question_toks: Are Finding the last name of the staffs whose emails address are containing "wrau".