backend-hana {dbplyr}

Backend: SAP HANA

Description

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

• Temporary tables get ⁠#⁠ prefix and use ⁠LOCAL TEMPORARY COLUMN⁠.

• No table analysis performed in copy_to().

• paste() uses ||

• Note that you can't create new boolean columns from logical expressions; you need to wrap with explicit ifelse: ifelse(x > y, TRUE, FALSE).

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

Usage

simulate_hana()

Examples

library(dplyr, warn.conflicts = FALSE)

lf <- lazy_frame(a = TRUE, b = 1, c = 2, d = "z", con = simulate_hana())
lf %>% transmute(x = paste0(d, " times"))