Insert values from more than one select query

Question

Hi all, I've a simple question:
I need to insert values into a table from two select statements.
There's what I need to accomplish:
I need to monitor the cursors opened on a database, so:
I created the following table:
O_CURSORS
Cols: TOTAL (Number 5), USER (VARCHAR2 20), DATE (TIMESTAMP)
I think some query like the following should work, but unfortunately, it doesn't.
insert into O_CURSORS (total,user,date)
values (
(select a.value, s.username from v$sesstat a, v$statname b, v$session s where a.statistic# = b.statistic#  and s.sid=a.sid and b.name = 'session cursor cache count'),
(select sysdate from dual)
)This statement is not working, the message is
"Not enough values"
If I modify the statement as follows, it works fine
insert into O_CURSORS (total,user)
(select a.value, s.username from v$sesstat a, v$statname b, v$session s where a.statistic# = b.statistic#  and s.sid=a.sid and b.name = 'session cursor cache count'),
)Any advice would be very appreciated!
Thanks in advance.

Answer 1

You don't have to select sysdate from dual; it can be a part of any select statement. Just include sysdate in your first query:
INSERT INTO O_CURSORS (total,user,date)
SELECT a.value, s.username, SYSDATE
FROM v$sesstat a,  v$statname b,   v$session s
WHERE a.statistic# = b.statistic#
  AND s.sid=a.sid and b.name = 'session cursor cache count'You'll note also that I elimiated the VALUES keyword, and just used a SQL statement to satisfy the INSERT statement.
Edited by: user13640471 on Feb 21, 2011 1:17 PM
Edited by: user13640471 on Feb 21, 2011 1:18 PM