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##-*- R -*-
library(RODBC)
library(MASS)
USArrests[1,2] <- NA
hills <- hills[1:15,]
row.names(hills)[12] <- "Dollar ('$')"
channel <- odbcConnect("sqlite3")
if(!inherits(channel, "RODBC")) q("no")
odbcGetInfo(channel)
sqlTables(channel)
sqlDrop(channel, "USArrests", errors = FALSE)
sqlSave(channel, USArrests, addPK = TRUE)
sqlTables(channel)
sqlColumns(channel, "USArrests")
sqlColumns(channel, "USArrests", special=TRUE)
sqlPrimaryKeys(channel, "USArrests")
sqlFetch(channel, "USArrests")
sqlQuery(channel, "select rownames, Murder from USArrests where Rape > 30 order by Murder")
foo <- USArrests[1:3, 2, drop = FALSE]
foo[1,1] <- 236
sqlUpdate(channel, foo, "USArrests")
sqlFetch(channel, "USArrests", max = 5)
sqlFetchMore(channel, max = 8)
sqlDrop(channel, "USArrests")
Btest <- Atest <-
data.frame(x = c(paste(1:100, collapse="+"), letters[2:4]), rn=1:4)
Btest[,1] <- Atest[c(4,1:3),1]
sqlDrop(channel, "Atest", errors = FALSE)
colspec <- list(character="varchar(1000)", double="double",
integer="integer", logical="varchar(5)")
sqlSave(channel, Atest, typeInfo = colspec)
sqlColumns(channel, "Atest")[, 1:6]
sqlFetch(channel, "Atest")
sqlUpdate(channel, Btest, "Atest", index = "rn")
sqlFetch(channel, "Atest")
sqlDrop(channel, "Atest")
varspec <- "varchar(1000)"; names(varspec) <- "x"
sqlSave(channel, Atest, varTypes = varspec)
sqlColumns(channel, "Atest")[, 1:6]
sqlFetch(channel, "Atest")
sqlDrop(channel, "Atest")
dates <- as.character(seq(as.Date("2004-01-01"), by="week", length=10))
times <- paste(1:10, "05", "00", sep=":")
dt <- as.POSIXct(paste(dates, times))
Dtest <- data.frame(dates, times, dt, logi=c(TRUE, NA, FALSE, FALSE, FALSE))
varspec <- c("date", "time", "timestamp", "varchar(5)")
names(varspec) <- names(Dtest)
sqlDrop(channel, "Dtest", errors = FALSE)
sqlSave(channel, Dtest, varTypes = varspec)
sqlColumns(channel, "Dtest")
sqlFetch(channel, "Dtest")
sqlDrop(channel, "Dtest", errors = FALSE)
sqlSave(channel, Dtest, varTypes = varspec, fast = FALSE)
sqlColumns(channel, "Dtest")
sqlFetch(channel, "Dtest")
sqlDrop(channel, "Dtest")
sqlDrop(channel, "hills test", errors = FALSE)
sqlSave(channel, hills, "hills test", verbose=TRUE)
sqlUpdate(channel, hills[11:15,], "hills test", verbose=TRUE, fast=TRUE)
sqlFetch(channel, "hills test")
sqlDrop(channel, "hills test")
sqlSave(channel, hills, "hills test", verbose=TRUE, fast=FALSE)
sqlUpdate(channel, hills[11:15,], "hills test", verbose=TRUE, fast=FALSE)
sqlDrop(channel, "hills test")
sqlTables(channel, catalog = "", schema = "", tableName = "", tableType = "%")
close(channel)
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