simulate_dbi {dbplyr} | R Documentation |
These functions are useful for testing SQL generation without having to have an active database connection.
simulate_dbi() simulate_sqlite() simulate_postgres() simulate_mysql() simulate_odbc(type = NULL) simulate_impala() simulate_mssql() simulate_oracle() simulate_hive() simulate_odbc_postgresql() tbl_lazy(df, src = NULL) lazy_frame(..., src = NULL)
library(dplyr) df <- data.frame(x = 1, y = 2) df_sqlite <- tbl_lazy(df, src = simulate_sqlite()) df_sqlite %>% summarise(x = sd(x)) %>% show_query()