execute {sqliter} | R Documentation |
execute query into a given database
Description
Once you have a sqliter
database properly set you
can execute queries into that database and get your data
transformed. By default this function returns a
data.frame object, but if you transform your data you can
get whatever you need.
Usage
execute(object, ...)
## S3 method for class 'sqliter'
execute(object, database, query,
post_proc = identity, ...)
Arguments
object |
|
database |
the SQLite database filename without extension |
query |
the query string |
post_proc |
a function to transform data, it receives a database and returns whatever you need. |
... |
additional arguments used by prepared queries |
Examples
## Not run:
DBM <- sqliter(path=c("data", "another/project/data"))
ds <- execute(DBM, "dummydatabase", "select count(*) from dummytable")
ds <- execute(DBM, "dummydatabase", "select * from dummytable where
name = :name", name=c("Macunamima", "Borba Gato"))
ds <- execute(DBM, "dummydatabase", "select * from dummytable where
name = :name", name=c("Macunamima", "Borba Gato"),
post_proc=function(ds) {
ds <- transform(ds, birthday=as.Date(birthday))
ds
})
## End(Not run)
[Package sqliter version 0.1.0 Index]