How many respondents of the mental health survey were diagnosed with 'Substance Use Disorder'?
respondents' and 'users' are synonyms
SELECT COUNT(AnswerText) FROM Answer WHERE AnswerText LIKE 'Substance Use Disorder'
database name:db_id mental_health_survey
Question table Question Cols: question text dtype text, question id dtype integer, 
Survey table Survey Cols: Survey ID dtype integer, Description dtype text, 
Answer table Answer Cols: Answer Text dtype text, Survey ID dtype integer, User ID dtype integer, Question ID dtype integer, 
