Fw: Weird problem with mysql_query
- Original Message - From: Darryle Steplight [EMAIL PROTECTED] To: MySql [EMAIL PROTECTED] Cc: mysql@lists.mysql.com Sent: Tuesday, September 09, 2008 6:59 PM Subject: Re: Weird problem with mysql_query Hi G, There is nothing weird about your results. When you do a Count(*) without a GROUP BY(someColumn) you are essentially asking MySQL how many rows are present in the table. But when you do use Group By someColum , you are asking MySql how many rows do I have of someColumn . It's just a good practice to use GROUP BY when you want to a count of a specific column . mysql select count(*) as 'Count' from logins GROUP BY dawiz I found my problem - it turned out to be a misconception on my part; I was using sprintf(buf,%d, row[i]) if it was a numeric field - this was printing the address rather than the value. Apparently even though the data is type MYSQL_TYPE_LONGLONG it should be treated as char. G Vaughn -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
MySQL University session on September 11: openSolaris Web Stack
Hi, Sorry for the extra mail, but our presenters have just told me that they can't do the regular time for this session, so I've moved it to be 3 hours later (9:00 PST / 16:00 UTC / 17:00 GMT / 18:00 CET). The rest of the announcement remains valid: This Thursday, Jyri Virkki Murthy Chintalapati will give a MySQL University session: http://forge.mysql.com/wiki/OpenSolaris_Web_Stack (topic: openSolaris Web Stack) Please register for this session by filling in your name on the session Wiki page. Registering is not required but appreciated. That Wiki page also contains a section to post questions. Please use it! MySQL University sessions normally start at 13:00 UTC (summer) or 14:00 UTC (winter); see: http://forge.mysql.com/wiki/MySQL_University for more time zone information. Those planning to attend a MySQL University session for the very first time should probably read the instructions for attendees, http://forge.mysql.com/wiki/Instructions_for_Attendees. See http://forge.mysql.com/wiki/MySQL_University#Upcoming_Sessions for the complete list of upcoming University sessions. -Stefan -- *** Sun Microsystems GmbHStefan Hinz Sonnenallee 1Manager Documentation, Database Group 85551 Kirchheim-Heimstetten Phone: +49-30-82702940 Germany Fax: +49-30-82702941 http://www.sun.de/mysql mailto: [EMAIL PROTECTED] Amtsgericht Muenchen: HRB161028 Geschaeftsfuehrer: Thomas Schroeder, Wolfgang Engels, Dr. Roland Boemer Vorsitzender des Aufsichtsrates: Martin Haering *** -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Re: Weird problem with mysql_query
I don't have that much experience with MySQL having mostly worked with MSSQL, but I'm sure the logic is still the same. I believe the query select count(*) as 'count' from logins GROUP BY dawiz will fail because dawiz is not a column, it's a value within the table. If I'm not mistaken, a GROUP BY is only required when the COUNT needs to be split into groups: e.g. select player, count(*) as 'Count' from logins GROUP BY player; player | Count --- player1 | 12 player2 | 7 player3 | 35 or: select count(*) as 'Count' from logins WHERE player = 'player1'; Count - 12 or: select count(*) as 'Count' from logins; Count - 54 Regards, Andy Darryle Steplight wrote: Hi G, There is nothing weird about your results. When you do a Count(*) without a GROUP BY(someColumn) you are essentially asking MySQL how many rows are present in the table. But when you do use Group By someColum , you are asking MySql how many rows do I have of someColumn . It's just a good practice to use GROUP BY when you want to a count of a specific column . mysql select count(*) as 'Count' from logins GROUP BY dawiz The above query should return the results you are looking for. On Tue, Sep 9, 2008 at 6:06 PM, MySql [EMAIL PROTECTED] wrote: We are running MySql version 5.0.45-Debian_1ubuntu3.1-log Debian etch distribution under Ubuntu. If I submit the following query via mysql_query it acts as if the where is not there: select count(*) as 'Count' from logins where player = 'aqwert'; this returns: Count 143578160 Submitting the same query at a MySql prompt works correcty: mysql select count(*) as 'Count' from logins where player = 'dawiz'; +---+ | Count | +---+ | 6026 | +---+ 1 row in set (0.00 sec) Modifying the query to use a group by returns the correct count: TotalCount Total 6026 Is there something I should know about mysql_query and a simple count(*)? G Vaughn -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
REGEXP case insensitive SQL QUERY
How can I use REGEXP case insensitive SQL QUERY Ex: select * from table where a REGEXP 'abc' will match both 'abc' and 'ABC'
