packages
Author

Tony Duan

Published

October 16, 2022

Code
library(odbc)
library(DBI)
library(tidyverse)
library(gapminder)
Show the code
library(odbc)
library(DBI)
library(tidyverse)
library(gapminder)

gapminder_data=gapminder 

mtcars=mtcars

mtcars$names <- rownames(mtcars)

#Create database
#con <- dbConnect(drv = RSQLite::SQLite(),
#                 dbname = ":memory:")


con <- dbConnect(drv = RSQLite::SQLite(),
                 dbname = "test_db.sqlite")

#store sampledatabase
dbWriteTable(conn = con, 
             name = "gapminder_data_table",
             value = gapminder_data,
             overwrite = TRUE)


dbWriteTable(conn = con, 
             name = "mtcars_table",
             value = mtcars,
             overwrite = TRUE)
Code
dbListTables(con)
[1] "gapminder_data_table" "mtcars_table"        
Code
dbExistsTable(con, 'gapminder_data_table')
[1] TRUE
Code
SELECT * from mtcars_table
Displaying records 1 - 10
mpg cyl disp hp drat wt qsec vs am gear carb names
21.0 6 160.0 110 3.90 2.620 16.46 0 1 4 4 Mazda RX4
21.0 6 160.0 110 3.90 2.875 17.02 0 1 4 4 Mazda RX4 Wag
22.8 4 108.0 93 3.85 2.320 18.61 1 1 4 1 Datsun 710
21.4 6 258.0 110 3.08 3.215 19.44 1 0 3 1 Hornet 4 Drive
18.7 8 360.0 175 3.15 3.440 17.02 0 0 3 2 Hornet Sportabout
18.1 6 225.0 105 2.76 3.460 20.22 1 0 3 1 Valiant
14.3 8 360.0 245 3.21 3.570 15.84 0 0 3 4 Duster 360
24.4 4 146.7 62 3.69 3.190 20.00 1 0 4 2 Merc 240D
22.8 4 140.8 95 3.92 3.150 22.90 1 0 4 2 Merc 230
19.2 6 167.6 123 3.92 3.440 18.30 1 0 4 4 Merc 280
Code
dbDisconnect(con)

Reference

https://solutions.rstudio.com/db/getting-started/database-queries/