Hi ,
We find that if we alias a tablename and refer to that tablename in where cluase instead of reffering
to the alias it produces wrond results.
EG:
select to_char(a.generated, 'DD/Mon/YYYY' ) ,userid,email,descr from membership_invoice a join payment_classes
using(payment_class)
join users using(userid) join membership_status using(userid) where membership_invoice.status='a' and granted is
falseand
membership_invoice.last_reminder is null and current_date - date(a.generated) > 4 limit 10 ;
NOTICE: Adding missing FROM-clause entry for table "membership_invoice"
+-------------+--------+--------------------------+---------------+
| to_char | userid | email | descr |
+-------------+--------+--------------------------+---------------+
| 23/Nov/2002 | 34886 | pradeepk@trade-india.com | IID TradePass |
| 23/Nov/2002 | 34886 | pradeepk@trade-india.com | IID TradePass |
| 23/Nov/2002 | 34886 | pradeepk@trade-india.com | IID TradePass |
| 23/Nov/2002 | 34886 | pradeepk@trade-india.com | IID TradePass |
| 23/Nov/2002 | 34886 | pradeepk@trade-india.com | IID TradePass |
| 23/Nov/2002 | 34886 | pradeepk@trade-india.com | IID TradePass |
| 23/Nov/2002 | 34886 | pradeepk@trade-india.com | IID TradePass |
| 23/Nov/2002 | 34886 | pradeepk@trade-india.com | IID TradePass |
| 23/Nov/2002 | 34886 | pradeepk@trade-india.com | IID TradePass |
| 23/Nov/2002 | 34886 | pradeepk@trade-india.com | IID TradePass |
+-------------+--------+--------------------------+---------------+
Where as merely rewriting the quer to use defined aliases gives the correct results.
select to_char(a.generated, 'DD/Mon/YYYY' ) ,userid,email,descr from membership_invoice a join payment_classes
using(payment_class) join users using(userid) join membership_status using(userid) where a.status='a' and granted is
false and a.last_reminder is null and current_date - date(a.generated) > 4 ;
+-------------+--------+--------------------------------+------------------------+
| to_char | userid | email | descr |
+-------------+--------+--------------------------------+------------------------+
| 12/Feb/2003 | 125182 | blackandwhitetextile@yahoo.com | Mini Silver MemberShip |
| 13/Feb/2003 | 117512 | vaishnavipower@vsnl.net | Mini Silver MemberShip |
+-------------+--------+--------------------------------+------------------------+
(2 rows)
Can Anyone please explain if its a BUG for problem in my
understanding
Regds
Mallah.
--
Regds
Mallah
----------------------------------------
Rajesh Kumar Mallah,
Project Manager (Development)
Infocom Network Limited, New Delhi
phone: +91(11)6152172 (221) (L) ,9811255597 (M)
Visit http://www.trade-india.com ,
India's Leading B2B eMarketplace.
