Re: [HACKERS] Parser bug: alias is a "non-group column"?

Bruce Momjian <maillist@candle.pha.pa.us> writes:
> Where did we leave this?

It's still broken.  I have the following notes in my todo list:

Inconsistent handling of attribute renaming:create table t1 (name text, value float8);select name as n1 from t1  where
n1 = 'one' ;ERROR:  attribute 'n1' not found
 
butSELECT name AS tempname, value FROM t1 GROUP BY name, value ;SELECT name AS tempname, value FROM t1 GROUP BY
tempname,value ;
 
both work.  Even stranger,SELECT name AS tempname, value FROM t1 GROUP BY name, valueHAVING value/AVG(value) >
0.75;ERROR: Illegal use of aggregates or non-group column in target list
 
(it thinks tempname is not in the GROUP BY list) butSELECT name AS tempname, value FROM t1 GROUP BY tempname,
valueHAVINGvalue/AVG(value) > 0.75;
 
works!  (6.4.2 has same behavior for all cases...)


Looks like the parser has some problems in the presence of column
renaming.  Since 6.4.2 has the same bug I doubt this qualifies as a
showstopper for 6.5; I have other todo items that I consider higher
priority.  If someone else wants to dig into this, be my guest...
        regards, tom lane