dbWriteTable only writes 1 row of data.frame to MySQL Table - mysql

Question

Starting in mid-March, dbWriteTable stopped working properly and now only write the first row of the data.frame into the MySQL table. After this occurred, I updated MySQL, MySQL Workbench, RStudio, R and all my R packages to latest versions, but no improvement. Originally, I thought it occurred only when appending to database tables, but it also occurs when writing to newly created tables.
It does not produce an error message and dbWriteTable returns TRUE as if it was successful, but only one row had been written to the MySQL table.
Session info
devtools::session_info()
- Session info --------------------------------------------------------------------------
setting value
version R version 3.6.3 (2020-02-29)
os Windows 10 x64
system x86_64, mingw32
ui RStudio
language (EN)
collate English_United States.1252
ctype English_United States.1252
tz America/Los_Angeles
date 2020-04-14
- Packages -------------------------------------------------------------------------
package * version date source
- assertthat 0.2.1 2019-03-21 CRAN (R 3.6.0)
- backports 1.1.6 2020-04-05 CRAN (R 3.6.3)
- bit 1.1-15.2 2020-02-10 CRAN (R 3.6.2)
- bit64 0.9-7 2017-05-08 CRAN (R 3.6.2)
- blob 1.2.1 2020-01-20 CRAN (R 3.6.3)
- callr 3.4.3 2020-03-28 CRAN (R 3.6.3)
- cli 2.0.2 2020-02-28 CRAN (R 3.6.3)
- crayon 1.3.4 2017-09-16 CRAN (R 3.5.0)
- DBI * 1.1.0 2019-12-15 CRAN (R 3.6.3)
- desc 1.2.0 2018-05-01 CRAN (R 3.5.0)
- devtools 2.3.0 2020-04-10 CRAN (R 3.6.3)
- digest 0.6.25 2020-02-23 CRAN (R 3.6.3)
- ellipsis 0.3.0 2019-09-20 CRAN (R 3.6.2)
- fansi 0.4.1 2020-01-08 CRAN (R 3.6.2)
- fs 1.4.1 2020-04-04 CRAN (R 3.6.3)
- glue 1.4.0 2020-04-03 CRAN (R 3.6.3)
- hms 0.5.3 2020-01-08 CRAN (R 3.6.2)
- magrittr 1.5 2014-11-22 CRAN (R 3.5.0)
- memoise 1.1.0 2017-04-21 CRAN (R 3.5.0)
- odbc * 1.2.2 2020-01-10 CRAN (R 3.6.3)
- pkgbuild 1.0.6 2019-10-09 CRAN (R 3.6.2)
- pkgconfig 2.0.3 2019-09-22 CRAN (R 3.6.2)
- pkgload 1.0.2 2018-10-29 CRAN (R 3.5.1)
- prettyunits 1.1.1 2020-01-24 CRAN (R 3.6.2)
- processx 3.4.2 2020-02-09 CRAN (R 3.6.2)
- ps 1.3.2 2020-02-13 CRAN (R 3.6.2)
- R6 2.4.1 2019-11-12 CRAN (R 3.6.2)
- Rcpp 1.0.4.6 2020-04-09 CRAN (R 3.6.3)
- remotes 2.1.1 2020-02-15 CRAN (R 3.6.2)
- rlang 0.4.5 2020-03-01 CRAN (R 3.6.3)
- rprojroot 1.3-2 2018-01-03 CRAN (R 3.5.0)
- rstudioapi 0.11 2020-02-07 CRAN (R 3.6.2)
- sessioninfo 1.1.1 2018-11-05 CRAN (R 3.5.1)
- testthat 2.3.2 2020-03-02 CRAN (R 3.6.3)
- usethis 1.6.0 2020-04-09 CRAN (R 3.6.3)
- vctrs 0.2.4 2020-03-10 CRAN (R 3.6.3)
- withr 2.1.2 2018-03-15 CRAN (R 3.5.0)
[1] D:/R_HOME/library
[2] D:/R_HOME/R-3.6.3/library
Reproducible Code
library(DBI)
#Connect to MySQL database
con <- dbConnect(odbc::odbc(),
dsn =mydsn,
database = mydatabase,
uid=myId,
pwd= myPassword)
dbListTables(con)
x <- dbWriteTable(con, "mtcars", mtcars, temporary = FALSE)
dbReadTable(con, "mtcars")
x2 <- dbWriteTable(con, "mtcars", mtcars[2:3, ], append=TRUE, temporary = FALSE)
dbReadTable(con, "mtcars")
dbListTables(con)
dbExistsTable(con, "mtcars")
dbDisconnect(con)
After
x <- dbWriteTable(con, "mtcars", mtcars, temporary = FALSE)
x = TRUE
After the following
dbReadTable(con, "mtcars")
The output is:
row_names mpg cyl disp hp drat wt qsec vs am gear carb
1 Mazda RX4 21 6 160 110 3.9 2.62 16.46 0 1 4 4
After
x2 <- dbWriteTable(con, "mtcars", mtcars[2:3, ], append=TRUE, temporary = FALSE)
x2 = TRUE
After the following
dbReadTable(con, "mtcars")
The output is:
row_names mpg cyl disp hp drat wt qsec vs am gear carb
1 Mazda RX4 21 6 160 110 3.9 2.62 16.46 0 1 4 4
2 Mazda RX4 Wag 21 6 160 110 3.9 2.875 17.02 0 1 4 4
The problem appears so basic and I have uninstalled and reinstalled R, RStudio and DBI, odbc, as well as, any other package that I thought might depend on those, but I have had no success. All packages are up to date.
R version 3.6.3 (2020-02-29)
MySQL Workbench 8.0 version 8.0.19
MySQL Workbench 8.0 version 8.0.19 Build 15713499 CE (64 bits) Community
Windows 10 Pro 64-bit Version: 18362.720
Intel(R) Core(TM) i7-7700 CPU # 3.60GHz
System Memory 16GB
Any suggestions would be greatly appreciated.

Answer 1

#Brian Thank you very much for your suggestion. It took a while to get RMariaDB to communicate with MySQL without giving the caching_sha2_password error, but RMariaDB was finally able to connect and dbWriteTable was successfully able to write the full data.frames to MySQL. It appears the problem must be odbc.

Answer 2

The following is how I worked around the caching_sha2_password error.
First, I opened C:/~/MySQL/MySQL Server 8.0/my.ini in Notepad++.
Then I changed the following line:
from: default_authentication_plugin= caching_sha2_password
to: default_authentication_plugin= mysql_native_password
and saved it.
Then I ran:
CREATE USER 'newuser'#'localhost' IDENTIFIED BY 'password';
GRANT ALL PRIVILEGES ON *.* TO 'newuser'#'localhost';
FLUSH PRIVILEGES;
SELECT * FROM mysql.user;
The results showed 'newuser'#'localhost' had all privileges.
I tested it and it was successful.