RODBC sqlSave（...，fast = FALSE） - “RODBCTypeInfo”不适用于.Call（）包“RODBC”

Question

我的sqlSave查询与fast = TRUE完美配合失败，并出现以下错误fast = FALSE（连接到MS .accdb）：

> db <- odbcConnectAccess2007(PATH_OUT)
> sqlSave(db, df, "tblTest", rownames = F, append = T, fast = F)
Error in .Call("RODBCTypeInfo", attr(channel, "handle_ptr"), as.integer(type),  : 
  "RODBCTypeInfo" not available for .Call() for package "RODBC"

> traceback()
4: .Call("RODBCTypeInfo", attr(channel, "handle_ptr"), as.integer(type), 
       PACKAGE = "RODBC")
3: sqlTypeInfo(channel)
2: sqlwrite(channel, tablename, dat, verbose = verbose, fast = fast, 
       test = test, nastring = nastring)
1: sqlSave(db, df, "tblTest", rownames = F, append = T, fast = F)

我自己不理解错误信息，所以任何想法为什么？

（我只是想测试fast = FALSE会慢多少）