将表从Microsoft SQL Server转换为R中的数据框

Question

I am working on a project and would like to connect to a database on MSSQL Server and then get one(or more) of the tables on the database and convert it/them to a dataframe to work in memory, then I will apply some changes to this dataframe and send it back to the MSSQL Server Database.

I am able to connect to my database and I know how to send a dataframe to a database but I don't know how to convert the table to a dataframe as the first step.

 con <- dbConnect(odbc(), Driver = "SQL Server", Server = "MyServer", Database = "MyDB", Trusted_Connection = "True") 

Answer 1

You can use SQLdf and SQL query as well to get your desired output (to get the data from a database and convert into a dataframe in R)

library(odbc)
library(RODBC)
library(sqldf)

conn <- odbcDriverConnect('driver={SQL Server};server= 
YOURserver;database=Yourdatabase;trusted_connection=true')

DataSQL <- sqlQuery(conn,"SELECT *  FROM dbo.practicR;"); 

View(DataSQL) 

Output: This is the same data in SQL server.

Output