wl at eimb.ru
Wed Apr 23 13:30:04 CEST 2003
> But there are lots of commands I found in R docs which are "not found",
> such as getTable. Deprecated (I successfully used dbListTables) or do I
> simply miss a package ?
* added (almost) trivial convenience RS-DBI functions getTable(),
assignTable(), existsTable(), and removeTable(). They all mimic the
corresponding R/S get(), assign(), exists(), and remove(), and they
all work with a connection object and an sql table name (NOT generic
SQL queries); assignTable() assigns a data.frame object (or coerceable)
to the database. (These functions provide the basis for "user-defined
databases in S -- see below.)
> How should I use resultSets ? I am not able to close neither a
> connection nor a ResultSet. I tried with close(con).
> Thanks for any help.
I used the following script:
con <- dbConnect(dbDriver("MySQL"), dbname = "area");
regionarea <- dbGetQuery(con,
"select area from region_areas \
where region like \"Arctic Ocean\""
mynn <- dbGetQuery(con,
paste("select year(date) as year,",
"avg(area1)/",regionarea,"*100 as area1,",
"avg(area2)/",regionarea,"*100 as area2",
"where month(date)<=3 and empty<465",
"group by year(date)",
Wladimir Eremeev mailto:wl at eimb.ru
Research Scientist Leninsky Prospect 33,
Space Monitoring & Ecoinformation Systems Sector, Moscow, Russia, 119071,
Institute of Ecology, Phone: (095) 135-9972;
Russian Academy of Sciences Fax: (095) 954-5534
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