Re: Graphical explain plan sometimes shows "using" for the index name
От | Andy Shellam (Mailing Lists) |
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Тема | Re: Graphical explain plan sometimes shows "using" for the index name |
Дата | |
Msg-id | 45C778DB.7040207@mailnetwork.co.uk обсуждение исходный текст |
Ответ на | Graphical explain plan sometimes shows "using" for the index name ("O'Shea, Brendan" <boshea@akamai.com>) |
Ответы |
Re: Graphical explain plan sometimes shows "using" for the index name
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Список | pgadmin-support |
Is this still present in the latest version of PgAdmin? v1.6.2 is the current stable version. Regards, Andy. O'Shea, Brendan wrote: > This is a bug in the graphical explain plan in the pgAdmin III Query > tool. In the graphical explain plan if your query is ordering with the > help of an index and the order is "Descending" then the graphical > explain plan just says "using" as the index name. If the sort order is > ascending then the correct index name is displayed. Here are the > relevant lines from the textual output from explain: > > > DESC > -> Index Scan Backward using idx_name on table_name > ASC > -> Index Scan using idx_name on table_name > > This may be because the code for getting the index name is grabbing the > 4th word and does not check to see if the word "Backward" was added to > the line, in which case the 5th word should be used. > > My Environment: > pgAdmin III 1.4.3 > Default config, downloaded precomplied binary for windows > Windows XP > Postgresql 8.1.4 > > > To reproduce the problem is simple, just be sure to order by an indexed > column and then click the Explain Query button: > > select * from table_name order by indexed_col asc limit 1 > select * from table_name order by indexed_col desc limit 1 > > > I did a mailing list search but didn't see anyone else reporting this. > If it's a newly found bug then I'd greatly appreciate it if someone > could fix this. I use the graphical query explain tool a lot, I find it > to be very useful when designing new queries. > > Thanks, > Brendan > > ---------------------------(end of broadcast)--------------------------- > TIP 1: if posting/reading through Usenet, please send an appropriate > subscribe-nomail command to majordomo@postgresql.org so that your > message can get through to the mailing list cleanly > > !DSPAM:37,45c775e918511302212047! > > >
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