Displaying 5 results from an estimated 5 matches for "dbcolumninfo".
2009 Jun 02
1
Converting Multiple Columns of Data Frame to Date
...subset of columns containing character
representations of dates. The data frame is obtained via the
DBI::fetch(rs, ...) method. I would like to convert all the columns
which were originally dates in the database to R dates. I can obtain a
logical index of columns which are dates via
> idx <- dbColumnInfo(rs)$type == "DATE".
I'm having trouble converting these columns to R Date objects, A mock
example is:
> df <- data.frame(blah = c(1, 2), start = c("01-Jun-09", "02-Jun-09"), end = c("01-Jul-09", "02-Jul-09"))
> idx <- c(FALSE, TRUE...
2007 Mar 20
1
RMySQL load error
...ields"
[1] "dbCommit"
[1] "dbRollback"
[1] "dbCallProc"
[1] "MySQLResult"
[1] "dbClearResult"
[1] "fetch"
[1] "fetch"
[1] "dbGetInfo"
[1] "dbGetStatement"
[1] "dbListFields"
[1] "dbColumnInfo"
[1] "dbGetRowsAffected"
[1] "dbGetRowCount"
[1] "dbHasCompleted"
[1] "dbGetException"
[1] "summary"
[1] "dbDataType"
[1] "make.db.names"
[1] "SQLKeywords"
[1] "isSQLKeyword"
[1] "dbApply&q...
2003 Nov 11
0
Installing and Loading RMySQL on OS X 2.8
...uot;dbListFields"
[1] "dbCommit"
[1] "dbRollback"
[1] "dbCallProc"
[1] "MySQLResult"
[1] "dbClearResult"
[1] "fetch"
[1] "fetch"
[1] "dbGetInfo"
[1] "dbGetStatement"
[1] "dbListFields"
[1] "dbColumnInfo"
[1] "dbGetRowsAffected"
[1] "dbGetRowCount"
[1] "dbHasCompleted"
[1] "dbGetException"
[1] "summary"
[1] "dbDataType"
[1] "make.db.names"
[1] "SQLKeywords"
[1] "isSQLKeyword"
[1] "dbApply"
[1] &...
2005 Mar 09
1
RMySQL installed but not availalable
...t; [1] "dbRollback"
> [1] "dbCallProc"
> [1] "MySQLResult"
> [1] "dbClearResult"
> [1] "fetch"
> [1] "fetch"
> [1] "dbGetInfo"
> [1] "dbGetStatement"
> [1] "dbListFields"
> [1] "dbColumnInfo"
> [1] "dbGetRowsAffected"
> [1] "dbGetRowCount"
> [1] "dbHasCompleted"
> [1] "dbGetException"
> [1] "summary"
> [1] "dbDataType"
> [1] "make.db.names"
> [1] "SQLKeywords"
> [1] "isS...
2002 Oct 16
5
Database newbee problem...
Hi all,
This is a potentially very stupid question about MySQL <-> R
interaction, but I have not been able to solve it.
I'm just trying to connect R to my MySQL databse, and gets this:
> library(RMySQL)
Loading required package: methods
> m <- dbDriver("MySQL")
> con <- dbConnect(m,group="testdb")
Process R segmentation fault at Wed Oct 16 07:04:30