use LAST_INSERT_ID() to get the last inserted id http://www.mysql.com/doc/G/e/Getting_unique_ID.html
and 'The most recently generated ID is maintained in the server on a per-connection basis. It will not be changed by another client. It will not even be changed if you update another AUTO_INCREMENT column with a non-magic value (that is, a value that is not NULL and not 0). ' Regards, Dan > -----Original Message----- > From: Lee P Reilly [mailto:[EMAIL PROTECTED]] > Sent: Thursday, 21 February 2002 8:50 a.m. > To: MySQL > Subject: insert & select in ONE statement? > > > Hi, > > I wonder if anyone can offer me some advice with this one: > > I have a table called 'iq_data' holding just a primary key and a field > called 'iq_data'. > > +--------+------------+------+-----+---------+----------------+ > | Field | Type | Null | Key | Default | Extra | > +--------+------------+------+-----+---------+----------------+ > | iqid | int(11) | | PRI | NULL | auto_increment | > | iqdata | mediumtext | | | NULL | | > +--------+------------+------+-----+---------+----------------+ > > 'iq_data' contains the contents of a plain text file in the following > format: > > .0000010 .1083649E+03 .2186916E+02 > .0013470 .1993729E+03 .2738670E+02 > ==> + approx. 100-1000 more lines. > > > After I insert data into the table, I need to get the iqid that was > generated. One solution is to do something like: > > SELECT iqid from iq_data where iqdata="<the contents of the file>"; > // ^ this will give me the correct answer, but it may be a > // little inefficient as there may be thousands of records, and the > // search string is very large > > or > > SELECT iqid from iq_id order by iqid (and get the last iqid generated) > // ^ querying like this immediately after inserting data to the table, > // but assumes that another record has not yet been added > > A problem will arise if say, data is inserted by user 1, and then by > user 2, and then the iqid for user1 is requested, but the iqid for user2 > will be returned. > > So... > > Is there any way I can e.g. insert the data into the table and return > the value of the PK that was generated in one statement? If not, of the > 2 solutions above what is more efficient? Is there are more elegant > solution? > > Thank you very much for your time; hope someone can help ;-) > > - Best regards, > > Lee Reilly > > </My SQL query> > > --------------------------------------------------------------------- > Before posting, please check: > http://www.mysql.com/manual.php (the manual) > http://lists.mysql.com/ (the list archive) > > To request this thread, e-mail <[EMAIL PROTECTED]> > To unsubscribe, e-mail > <[EMAIL PROTECTED]> > Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php > > --------------------------------------------------------------------- Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail <[EMAIL PROTECTED]> To unsubscribe, e-mail <[EMAIL PROTECTED]> Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
