2014-11-09 6 views
1

я эту функцию я использовал, чтобы загрузить таблицу SQLiteЗагрузка SQLite таблицы в R с RSQLite

sqLiteConnect <- function(database, table) { 
    library(DBI) 
    library(RSQLite) 
    con <- dbConnect("SQLite", dbname = database) 
    query <- dbSendQuery(con, paste("SELECT * FROM ", table, ";", sep="")) 
    result <- fetch(query, n = -1, encoding="utf-8") 
    dbClearResult(query) 
    dbDisconnect(con) 
    return(result) 
} 

Но теперь швы она генерирует ошибку

album <- sqLiteConnect("~/Downloads/ChinookDatabase1.3_Sqlite/Chinook_Sqlite.sqlite","Album") 

Error in (function (classes, fdef, mtable) : 
    unable to find an inherited method for function ‘dbConnect’ for signature ‘"character"’ 
Called from: stop(gettextf("unable to find an inherited method for function %s for signature %s", 
    sQuote([email protected]), sQuote(cnames)), domain = NA) 

(я скачал дб от here)

Это ошибка или проблема с моей функцией?

sessionInfo() 
R version 3.1.2 (2014-10-31) 
Platform: x86_64-apple-darwin13.4.0 (64-bit) 

locale: 
[1] en_AU.UTF-8/en_AU.UTF-8/en_AU.UTF-8/C/en_AU.UTF-8/en_AU.UTF-8 

attached base packages: 
[1] graphics grDevices utils  datasets stats  methods base  

other attached packages: 
[1] ggplot2_1.0.0 igraph_0.7.1 RSQLite_1.0.0 DBI_0.3.1  

loaded via a namespace (and not attached): 
[1] colorspace_1.2-4 digest_0.6.4  grid_3.1.2  gtable_0.1.2  
[5] MASS_7.3-35  munsell_0.4.2 plyr_1.8.1  proto_0.3-10  
[9] Rcpp_0.11.3  reshape2_1.4  scales_0.2.4  stringr_0.6.2 
[13] tools_3.1.2 

ответ

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