尝试如下切换NOCOUNT:

old_qry <- "
DECLARE @tbl_IDs TABLE 
(
    Country nvarchar(30),
    CID nvarchar(5),
    PriceID int,
    WindID int
)

INSERT INTO @tbl_IDs
VALUES 
    ('Germany', 'DE', 112000001, 256000002);

SELECT * FROM @tbl_Ids
"
##
new_qry <- "
SET NOCOUNT ON;
DECLARE @tbl_IDs TABLE 
(
    Country nvarchar(30),
    CID nvarchar(5),
    PriceID int,
    WindID int
);

INSERT INTO @tbl_IDs
VALUES 
    ('Germany', 'DE', 112000001, 256000002);
SET NOCOUNT OFF;
SELECT * FROM @tbl_Ids
"

R> sqlQuery(tcon, gsub("\\n", " ", old_qry))
#character(0)
R> sqlQuery(tcon, gsub("\\n", " ", new_qry))
#  Country CID   PriceID    WindID
#1 Germany  DE 112000001 256000002

基本上，您想在代码的开头SET NOCOUNT ON，而在最后一个SELECT语句之前的SET NOCOUNT OFF.

Basically you want to SET NOCOUNT ON at the beginning of your code, and SET NOCOUNT OFF just before the final SELECT statement.