Re: [JDBC] Fix for broken JDBC's getColumn() (take 2)
От | Vianen, Jeroen van |
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Тема | Re: [JDBC] Fix for broken JDBC's getColumn() (take 2) |
Дата | |
Msg-id | F9926D32A30ED511B8E30050044AB52E101489@AMS010 обсуждение исходный текст |
Список | pgsql-patches |
Hi, What's the status of this patch I sent a week ago? Thanks, Jeroen > -----Original Message----- > From: Jeroen van Vianen [mailto:jeroen.van.vianen@satama.com] > Sent: Monday, September 10, 2001 20:01 > To: pgsql-jdbc@postgresql.org; pgsql-patches@postgresql.org > Subject: [JDBC] Fix for broken JDBC's getColumn() (take 2) > > > Hi, > > Per the recent discussion there's been some code changes in JDBC's > DatabaseMetaData.getColumn(). I proposed a patch that would > change the > number of queries to find out all columns in a table from 2 * > N + 1 to 1 (N > being the number of columns reported) by using some outer > joins. I also > fixed the fact that getColumns() only returned columns that > had a default > defined. OTOH, I did not use to change the code required for > obtaining a > column's remarks (by using col_description() for 7.2 and > requested by Tom > Lane). > > Finally, I have found a way to get all the column details in > a single query > *and* use col_description() for 7.2 servers. A patch is attached. It > overrules René Pijlman's fix for this that was committed just > today, but > still used N + 1 queries (sorry René ;-) ) > > I also fixed the return values for TABLE_CAT and TABLE_SCHEM > from "" to > null, to be more standard compliant (and requested in René's > mail found at > http://fts.postgresql.org/db/mw/msg.html?mid=1034253). > > As always, the JDBC1 version has not been tested as I have no JDK 1.1 > available. > > Please review, > > > Jeroen > >
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