Re: 'AS' column-alias beign ignored on outer select
От | Thomas F. O'Connell |
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Тема | Re: 'AS' column-alias beign ignored on outer select |
Дата | |
Msg-id | 0CFC49B5-893F-44BA-A185-86C431B34FDD@sitening.com обсуждение исходный текст |
Ответ на | 'AS' column-alias beign ignored on outer select ("Markus Wollny" <Markus.Wollny@computec.de>) |
Ответы |
Re: 'AS' column-alias beign ignored on outer select
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Список | pgsql-general |
On Dec 2, 2005, at 6:00 AM, Markus Wollny wrote: > Hi! > > Is this the expected behaviour? > > select ID > , USK_RATING AS USK > from ( > select ID > , USK_RATING > from MAIN_SONY_PS2_GAME > where ID = 101400 > limit 1 > ) > as PRODUCT_LIST > limit 1; > > id | usk_rating > --------+------------ > 101400 | > (1 row) > > Note the column-header being labeled 'usk_rating', not 'usk'. > Obviously > the 'AS' column alias of the outer select is being ignored in the > resultset. > > select ID > , USK > from ( > select ID > , USK_RATING AS USK > from MAIN_SONY_PS2_GAME > where ID = 101400 > limit 1 > ) > as PRODUCT_LIST > limit 1; > > id | usk > --------+----- > 101400 | > (1 row) > > If the column alias is being declared in the subselect, the column > alias > is working. > > select version(); > version > ---------------------------------------------------------------------- > PostgreSQL 8.1.0 on i686-pc-linux-gnu, compiled by GCC gcc (GCC) 3.2 > > Is this working as expected or is this a bug? I have to say, this looks like a regression. I can't reproduce it in an 8.0.3 database. The interesting thing is that the bug seems to be related to the limit clause of the inner query. Hackers? -- Thomas F. O'Connell Database Architecture and Programming Co-Founder Sitening, LLC http://www.sitening.com/ 110 30th Avenue North, Suite 6 Nashville, TN 37203-6320 615-260-0005 (cell) 615-469-5150 (office) 615-469-5151 (fax)
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