As per JIRA documentation http://www.atlassian.com/software/jira/docs/latest
The following filter will show the issues opned by me (Current User).
repor
This is the query to know the issues I am involved in:
SELECT a.pkey, a.summary FROM jiraissue AS a left join jiraaction AS b on a.id = b.issueid
where b.author = 'jira_username' OR a.REPORTER = 'jira_username' OR a.ASSIGNEE = 'jira_username'
group by a.pkey order by a.CREATED
This is the query to know all issues raised in the last 24 hours.
select REPORTER, SUMMARY from jiraissue
WHERE CREATED > DATE_SUB(CURDATE(), INTERVAL 1 DAY) order by CREATED DESC;