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-   -   Query question - PLEASE HELP!!! (https://vborg.vbsupport.ru/showthread.php?t=99273)

Lea Verou 10-25-2005 10:06 AM
Query question - PLEASE HELP!!!
 
I really need a hack that displays the average age. Currently I am using this plugin:

PHP Code:
$age_result=$db->query_first("SELECT ROUND(YEAR(NOW())-AVG(YEAR(birthday_search)),0) AS avgage FROM " . TABLE_PREFIX . "user WHERE YEAR(birthday_search) <> 0;");
$avg_age=$age_result['avgage']; 
but as you can see, it's not accurate as it only counts the year of the birthday and the current year...

Andreas/KirbyDE had given me this query instead that is supposed to be more accurate:

[sql]
SELECT ROUND(AVG(YEAR(NOW())-YEAR(birthday_search) - (MONTH(NOW()) < MONTH(birthday_search)) - (MONTH(NOW()) = MONTH(birthday_search) AND DAY(NOW()) < DAY(birthday_search)))) AS avgage FROM " . TABLE_PREFIX . "user WHERE YEAR(birthday_search)>0
[/sql]

but it gives a database error:
Code:
Database error in vBulletin 3.5.0:

Invalid SQL:
SELECT ROUND(AVG(YEAR(NOW())-YEAR(birthday_search) - (MONTH(NOW()) < MONTH(birthday_search)) - (MONTH(NOW()) = MONTH(birthday_search) AND DAY(NOW()) < DAY(birthday_search)))) AS avgage FROM testvb_user WHERE YEAR(birthday_search)>0;

MySQL Error  : You have an error in your SQL syntax.  Check the manual that corresponds to your MySQL server version for the right syntax to use near '(NOW()) < DAY(birthday_search)))) AS avgage FROM testvb_user WH
Error Number : 1064
Any ideas please? :nervous:

Xenon 10-25-2005 10:31 AM
try that query

[sql]
SELECT ROUND(AVG(YEAR(NOW()) - YEAR(birthday_search) - (DAYOFYEAR(birthday_search) - DAYOFYEAR(NOW())) / 365 AS avgage
FROM testvb_user
WHERE YEAR(birthday_search)>0;[/sql]

Lea Verou 10-25-2005 10:42 AM
Thanks so much but I still get a db error... :(

Database error in vBulletin 3.5.0:
Code:
Invalid SQL:
SELECT ROUND(AVG(YEAR(NOW()) - YEAR(birthday_search) - (DAYOFYEAR(birthday_search) - DAYOFYEAR(NOW())) / 365 AS avgage
FROM testvb_user
WHERE YEAR(birthday_search)>0;;

MySQL Error  : You have an error in your SQL syntax.  Check the manual that corresponds to your MySQL server version for the right syntax to use near 'AS avgage
FROM testvb_user
WHERE YEAR(birthday_search)>0' a
Error Number : 1064
This is how I put it in the plugin:
PHP Code:
$age_result=$db->query_first("SELECT ROUND(AVG(YEAR(NOW()) - YEAR(birthday_search) - (DAYOFYEAR(birthday_search) - DAYOFYEAR(NOW())) / 365 AS avgage 
FROM testvb_user 
WHERE YEAR(birthday_search)>0;");
$avg_age=$age_result['avgage']; 

Marco van Herwaarden 10-25-2005 10:58 AM
Add a ')' in front of the AS avgage.

Lea Verou 10-25-2005 11:14 AM
Code:
Database error in vBulletin 3.5.0:

Invalid SQL:
SELECT ROUND(AVG(YEAR(NOW()) - YEAR(birthday_search) - (DAYOFYEAR(birthday_search) - DAYOFYEAR(NOW())) / 365) AS avgage
FROM testvb_user
WHERE YEAR(birthday_search)>0;;

MySQL Error  : You have an error in your SQL syntax.  Check the manual that corresponds to your MySQL server version for the right syntax to use near 'AS avgage
FROM testvb_user
WHERE YEAR(birthday_search)>0' a
Error Number : 1064
:( :( :(
I have started to think that it will never work out... :( :( :(

Xenon 10-25-2005 11:25 AM
it's just a problem with brackets ;)

[sql]SELECT ROUND(AVG(YEAR(NOW()) - YEAR(birthday_search) - (DAYOFYEAR(birthday_search) - DAYOFYEAR(NOW()) / 365))) AS avgage
FROM testvb_user
WHERE YEAR(birthday_search)>0;[/sql]

Lea Verou 10-25-2005 11:29 AM
Now there is no database error (woo hoo!! :D) but...
Average Age: -150 :(

Xenon 10-25-2005 12:30 PM
very young users you have ;)

my fault, try that:

[sql]SELECT ROUND(AVG(YEAR(NOW()) - YEAR(birthday_search) - (DAYOFYEAR(birthday_search) - DAYOFYEAR(NOW())) / 365)) AS avgage
FROM testvb_user
WHERE YEAR(birthday_search)>0;[/sql]

Lea Verou 10-25-2005 12:36 PM
It looks correct, thanks so much!!!!!! :D :D :D

Another question, not so urgent, answer if and when you have time... How can I make it to display 2 decimals? :)

Thanks again!

Also, do you allow me to release this as a modification? Others may need it too. Of course, I'll include the appropriate credits :)

Xenon 10-25-2005 12:42 PM
glad we could solve it :)

2 decimals are very easy:

[sql]SELECT ROUND(AVG(YEAR(NOW()) - YEAR(birthday_search) - (DAYOFYEAR(birthday_search) - DAYOFYEAR(NOW())) / 365), 2) AS avgage
FROM testvb_user
WHERE YEAR(birthday_search)>0;[/sql]

feel free to release it

Lea Verou 10-25-2005 12:54 PM
Thanks a lot!!!!
I'll release it but it will be quite messy as the user will have to manually change the plugin to enter his db prefix, if I try to put the variable TABLE_PREFIX it gives a db error for no reason. Really weird! :)

Marco van Herwaarden 10-26-2005 09:34 AM
What is the exact php code you are using to run this query?

Lea Verou 10-26-2005 09:46 AM
Quote:
Originally Posted by MarcoH64
What is the exact php code you are using to run this query?
Look at the first message, I am using the same code with a different query ;)

Marco van Herwaarden 10-26-2005 12:18 PM
That should not give a SQL error on the TABLE_PREFIX. What is the exact error?

Lea Verou 10-26-2005 12:33 PM
Nevermind, it's ok now, tamarian fixed it :)


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