The below code prints:
SELECT "district_code" FROM sd_stage.table1 GROUP BY "district_code"
but I am expecting:
select distinct(district_code) from sd_stage.table1
Code:
library(DBI)
library(tidyverse)
library(dbplyr)
conn_obj <- DBI::dbConnect(RPostgreSQL::PostgreSQL(),
host = "127.0.0.1",
user = "testingdb",
password = "admin@123")
on.exit(DBI::dbDisconnect(conn_obj))
tbl_oil_root_segment <- dplyr::tbl(conn_obj,
dbplyr::in_schema('sd_stage','table1'))
tbl_oil_root_segment %>% distinct(oil_district) %>% show_query()
Output is correct but the query which is generated seems to be not 100%. So is there anyway I can implement the query?
tbl_oil_root_segment %>% select(oil_district) %>% distinct %>% show_query()
will create the query you expect.
However, note that in SQL select distinct a from t
is the same as select a from t group by a
(see this question ).
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.