val a = SQL("""
		  SELECT * FROM message JOIN message ON message.thread_id=thread_member.thread_id AND thread_member.user_id = {userId}
	  """).on(

[error]     JdbcSQLException: Ambiguous column name "THREAD_ID"; SQL statement:
[error] SELECT * FROM message 		    JOIN message ON message.thread_id=thread_member.thread_id AND thread_member.user_id = ? [90059-158] (DbException.java:169)
[error] org.h2.message.DbException.getJdbcSQLException(DbException.java