backend-sqlite: Backend: SQLite

In dbplyr: A 'dplyr' Back End for Databases

Backend: SQLite

Description

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

• Uses non-standard LOG() function

• Date-time extraction functions from lubridate

• Custom median translation

• Right and full joins are simulated using left joins

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

Usage

simulate_sqlite()

Examples

library(dplyr, warn.conflicts = FALSE)

lf <- lazy_frame(a = TRUE, b = 1, c = 2, d = "z", con = simulate_sqlite())
lf %>% transmute(x = paste(c, " times"))
lf %>% transmute(x = log(b), y = log(b, base = 2))

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