Question

如何将列重写（复制）到现有数据库

我有一个名为db.sqlite的数据库

r.memory.data <- data.frame(id=seq(1,10),year=paste0("200",0:9),name=letters[1:10],mark=rbinom(10,1,0.5),label=letters[1:10])

con <- dbConnect(dbDriver("SQLite"), dbname = "C:/ ...db.sqlite")
list.tab <- dbListTables(con)
list.tab

给出"data" "sqlite_data"

tdf <- dbReadTable(con,"data")

给出：

[1] id  year   name     mark   label  
<0 rows> (or 0-length row.names)

我想用数据框r.memory.data重写现有的db（＆＃34; data＆＃34;），如上所示（空列）已经命名的列

尝试重写（复制数据）：

query <- paste0("INSERT INTO data SELECT * FROM r.memory.data")
dbSendQuery(con, query)

给出错误：

Error in sqliteSendQuery(con, statement) : 
error in statement: no such table: r.memory.data

Answer 1

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我会尝试这样做

如何将列重写（复制）到现有的SQLite数据库中

1 个答案: