r - 为什么 RODBC 不会将数据框上传到 SQL Server？

Question

library(RODBC)
con <- odbcDriverConnect("driver=SQL Server; server=name")
df <- data.frame(a=1:10, b=10:1, c=11:20)

尝试上传数据框:

sqlSave(con, df, tablename='[MyDatabase].[MySchema].[MyTable]', rownames=F)

>Error in sqlColumns(channel, tablename) : ‘MyDatabase.MySchema.MyTable’: table not found on channel
..或者先创建表然后附加到它:

cmd <- "create table [MyDatabase].[MySchema].[MyTable] ([a]  int, [b] int, [c] int)"
sqlQuery(con, cmd)

sqlSave(con, df, tablename='[MyDatabase].[MySchema].[MyTable]', rownames=F, append=T)

>Error in sqlSave(con, df, tablename = "MyTable", rownames = F, : 42S01 2714 [Microsoft][ODBC SQL Server Driver][SQL Server]There is already an object named MyDatabase.MySchema.MyTable in the database. [RODBC] ERROR: Could not SQLExecDirect 'CREATE TABLE MyDatabase.MySchema.MyTable ("a" int, "b" int, "c" int)'
我究竟做错了什么？

Answer 1

如果我添加括号，我也会收到错误消息。

如果我对数据库使用连接字符串来确保我在正确的数据库中(不是主数据库)并执行语句 sqlSave(con, df, tablename='dbo.MyTable4', rownames=F)或 sqlSave(con, df, tablename='MyTable5', rownames=F)有用。