我正在从移动RSQLite到RMySQL,我被迷惑user和password领域.FWIW,我正在运行Windows 7,R 2.12.2,MySQL 5.5(全部64位)和RMySQL 0.7-5.
我RMySQL按照之前的SO问题安装,据我所知,它可以工作(即,我可以加载包library(RMySQL)).但是当我尝试从R数据导入指南运行教程时,我收到"无法连接到数据库..."错误.这是指南教程中的代码:
library(RMySQL) # will load DBI as well
## open a connection to a MySQL database
con <- dbConnect(dbDriver("MySQL"), user = "root", password = "root", dbname = "pookas")
## list the tables in the database
dbListTables(con)
## load a data frame into the database, deleting any existing copy
data(USArrests)
dbWriteTable(con, "arrests", USArrests, overwrite = TRUE)
dbListTables(con)
## get the …我无法弄清楚为什么我的RMySQL软件包无法安装 - 这就是我得到的:
> install.packages('RMySQL',type='source')
trying URL 'http://cran.mirrors.hoobly.com/src/contrib/RMySQL_0.7-5.tar.gz'
Content type 'application/x-gzip' length 160769 bytes (157 Kb)
opened URL
downloaded 157 Kb
* installing *source* package 'RMySQL' ...
ERROR: configuration failed for package 'RMySQL'
* removing 'C:/PROGRA~1/R/R-212~1.0/library/RMySQL'
The downloaded packages are in '(foo)'
Warning message:
In install.packages("RMySQL", type = "source") : installation of package 'RMySQL' had non-zero exit status
我不认为这是MySQL安装的问题,因为正确的值似乎在注册表中:
> Sys.getenv('MYSQL_HOME')
MYSQL_HOME "C:/PROGRA~1/MySQL/MYSQLS~1.1/"
> readRegistry("SOFTWARE\\MySQL AB", hive="HLM", maxdepth=2)
$`MySQL Server 5.1`
$`MySQL Server 5.1`$DataLocation
[1] "C:\\Documents and Settings\\All Users\\Application Data\\MySQL\\MySQL …我试图使用RMySQL包,但我得到这样的错误:
install.packages('RMySQL')
Warning in install.packages :
package ‘RMySQL’ is not available (for R version 2.14.2)
使用MySQL和R可以做些什么？
谢谢!