backend-access: Backend: MS Access
In dbplyr: A 'dplyr' Back End for Databases

backend-access

R Documentation

Backend: MS Access

Description

See vignette("translation-function") and vignette("translation-verb") for details of overall translation technology. Key differences for this backend are:

SELECT uses TOP, not LIMIT
Non-standard types and mathematical functions
String concatenation uses &
No ANALYZE equivalent
TRUE and FALSE converted to 1 and 0

Use simulate_access() with lazy_frame() to see simulated SQL without converting to live access database.

Usage

simulate_access()

Examples

library(dplyr, warn.conflicts = FALSE)
lf <- lazy_frame(x = 1, y = 2, z = "a", con = simulate_access())

lf %>% head()
lf %>% mutate(y = as.numeric(y), z = sqrt(x^2 + 10))
lf %>% mutate(a = paste0(z, " times"))

dbplyr documentation built on May 29, 2024, 6:19 a.m.