Hi All As you suggested, I changed the code where I do not put auto-increment field in db_query. The code looks as below (Please note that $cid is not used in db_query).
* for($delta = 0; $delta < $all_companies; $delta++) { drupal_set_message(t('delta = ').$delta.t('last id = ').db_last_insert_id(rs_companies, cid)); db_query( 'INSERT INTO {rs_companies} (uid, prevcompany, joindate, releasedate) ' ."VALUES ('%d', '%s', '%d', '%d')", $user->uid, $form_state['values']['allcompanies'][$delta]['companies'], $form_state['values']['allcompanies'][$delta]['startdate'], $form_state['values']['allcompanies'][$delta]['enddate'] );*
So I have not put $cid, when I checked the table, I see $cid values are inserted properly. $cid in row 1 value is 155694 $cid in row 2 value is 155695 $cid in row 3 value is 155696 etc...
My question is , why the value is starting from 155694, why not from 0 or 1.
Is there anyway I force it to start from 0 or 1.
Regards Austin.
On Mon, Mar 28, 2011 at 7:50 PM, Larry Garfield larry@garfieldtech.comwrote:
Yep, you're doing it backwards, actually. :-)
In D6:
db_query("INSERT INTO {foo} (a, b) VALUES (%d, '%s')", 1, 'hi'); $cid = db_last_insert_id(); // The DB auto-generated this value.
In D7:
$cid = db_insert() ->fields(array( 'a' => 1, 'b' => 'hi' )) ->execute(); // db_insert()->execute() returns the new auto-inc value automatically.
Note: In D7, you can do a multi-insert statement where several inserts run as a set. That is faster than issuing separate queries, but the return value is then undefined and you do not have access to the last-insert-id. Decide if you *actually* need to auto-generated ID right then and then pick multi-insert or not as appropriate.
As to your other question, the max number of rows, bear in mind that the number of rows may not correspond go the largest auto-inc value. If you ever delete a row then the two will no longer match up. Depending on which you care about, either of the following are valid (this is D7 syntax):
$num_records = db_query("SELECT COUNT(*) FROM {foo}")->fetchField();
$max_cid = db_query("SELECT MAX(cid) FROM {foo}")->fetchField();
Cheers.
--Larry Garfield
On Monday, March 28, 2011 5:59:14 am Austin Einter wrote:
Thanks Nancy. Do you mean that in my code I should not put the value for "cid". That means $lastid (in red) should be removed.
*$lastid = 0; for($delta = 0; $delta < $all_companies; $delta++) { $lastid = db_last_insert_id(rs_companies, cid) + 1; db_query( 'INSERT INTO {rs_companies} ( cid, uid, prevcompany, joindate, releasedate) ' ."VALUES (%d, '%d', '%s', '%d', '%d')", $lastid, * *$user->uid*
Regards Austin
On Mon, Mar 28, 2011 at 4:20 PM, nan wich nan_wich@bellsouth.net
wrote:
You don't need to provide the value for an auto increment field.
"Db_last_insert_id()" is how you get the value *after* the insert, if
you
need it at all.
*Nancy*
Injustice anywhere is a threat to justice everywhere. -- Dr. Martin L. King, Jr.
*From:* Austin Einter
I have a table, where 'cid' field is of type "serial".
*$lastid = 0;
for($delta = 0; $delta < $all_companies; $delta++) {
$lastid = db_last_insert_id(rs_companies, cid) + 1;
db_query( 'INSERT INTO {rs_companies} ( cid, uid, prevcompany, joindate,releasedate) '
."VALUES (%d, '%d', '%s', '%d', '%d')",$lastid, *