Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE participants_in_Events (participant_id VARCHAR)

### Question ###
What are all the distinct participant ids who attended any events?

### Accurate SQL ###

SELECT COUNT(DISTINCT participant_id) FROM participants_in_Events