在 R 中使用 DBI 包时,我无法更改“语言环境”。更具体地说,我的数据库包含诸如“é、è、ê、...”之类的字符,而 DBI 无法正确读取它们。
当我使用 RODBC 包执行相同的查询时,它确实得到了正确的结果。我的问题:如何使用 DBI 包获得正确的结果(即正确读取“é, è, ê, ...”)?
这应该是一个可重现的例子:
sql <- "select * from myDatabase.dbo.myTable"
# Where myTable contains any of the difficult characters
# Try with DBI
library(odbc)
library(DBI)
conDBI <- dbConnect(
odbc::odbc(),
dsn = "myDsn",
UID = myLogin,
PWD = myPassword,
Port = 1433
)
table_DBI <- dbGetQuery(conDBI, sql)
# Try with RODBC
library(RODBC)
conRODBC <- odbcConnect(
"myDsn",
uid = myLogin,
pwd = myPassword
)
table_RODBC <- sqlQuery(conRODBC, sql)
如果这是相关的,这是我的会话信息:
> sessionInfo()
R version 3.4.0 Patched (2017-06-02 r72765)
Platform: x86_64-w64-mingw32/x64 (64-bit)
Running under: Windows 7 x64 (build 7601) Service Pack 1
Matrix products: default
locale:
[1] LC_COLLATE=Dutch_Belgium.1252 LC_CTYPE=Dutch_Belgium.1252 LC_MONETARY=Dutch_Belgium.1252 LC_NUMERIC=C
[5] LC_TIME=Dutch_Belgium.1252
attached base packages:
[1] stats graphics grDevices utils datasets tools methods base
other attached packages:
[1] RODBC_1.3-15 DBI_0.6-1 odbc_1.1.1
loaded via a namespace (and not attached):
[1] bit_1.1-12 compiler_3.4.0 hms_0.3 tibble_1.3.3 Rcpp_0.12.11 bit64_0.9-7 blob_1.1.0 rlang_0.1.1