R基礎學習(一)-- 連接mysql數據庫
阿新 • • 發佈:2018-12-23
The url 3.5 select fff spec 2.3 rstudio length downloaded 863 KB
測試環境:win10+RStudio
(1)在Console加載兩個插件
>install.packages(‘DBI‘)
Installing package into ‘C:/Users/lmei/Documents/R/win-library/3.5’
(as ‘lib’ is unspecified)
trying URL ‘https://cran.rstudio.com/bin/windows/contrib/3.5/DBI_1.0.0.zip‘
Content type ‘application/zip‘ length 884354 bytes (863 KB)
package ‘DBI’ successfully unpacked and MD5 sums checked
The downloaded binary packages are in
C:\Users\lmei\AppData\Local\Temp\Rtmp6Fwdfk\downloaded_packages
>install.packages(‘RMySQL‘)
Installing package into ‘C:/Users/lmei/Documents/R/win-library/3.5’
(as ‘lib’ is unspecified)trying URL ‘https://cran.rstudio.com/bin/windows/contrib/3.5/RMySQL_0.10.15.zip‘Content type ‘application/zip‘ length 2371644 bytes (2.3 MB)downloaded 2.3 MB
package ‘RMySQL’ successfully unpacked and MD5 sums checked
The downloaded binary packages are in
C:\Users\lmei\AppData\Local\Temp\Rtmp6Fwdfk\downloaded_packages
(2)編寫R測試腳本ConnectMySQL.R,然後點擊RUN
library(RMySQL) conn <- dbConnect(MySQL(), dbname = "test", username="root", password="123456",client.flag=CLIENT_MULTI_STATEMENTS) users = dbGetQuery(conn, "SELECT * FROM tb_user") dbDisconnect(conn) print(users)
Console輸出
> library(RMySQL) > conn <- dbConnect(MySQL(), dbname = "test", username="root", password="123456",client.flag=CLIENT_MULTI_STATEMENTS) > users = dbGetQuery(conn, "SELECT * FROM tb_user") > dbDisconnect(conn) [1] TRUE > print(users) id name 1 1 Tom
mysql連接讀取成功!
R基礎學習(一)-- 連接mysql數據庫