What are all the distinct participant ids who attended any events?
CREATE TABLE participants_in_Events (participant_id VARCHAR)
SELECT COUNT(DISTINCT participant_id) FROM participants_in_Events
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE participants_in_Events (participant_id VARCHAR) Question: What are all the distinct participant ids who attended any events? [/INST] SELECT COUNT(DISTINCT participant_id) FROM participants_in_Events </s>