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% $Id: dbCommit-methods.Rd 159 2006-02-15 18:13:05Z dj $
\name{dbCommit-methods}
\docType{methods}
\alias{dbCommit-methods}
\alias{dbRollback-methods}
\alias{dbCommit,MySQLConnection-method}
\alias{dbRollback,MySQLConnection-method}
\title{
DBMS Transaction Management
}
\description{
Commits or roll backs the current transaction
in an MySQL connection
}
\section{Methods}{\describe{
\item{conn}{a \code{MySQLConnection} object, as produced by the function
\code{dbConnect}.}
\item{\dots }{currently unused.}
}
}
\references{
See the Database Interface definition document
\code{DBI.pdf} in the base directory of this package
or
\url{http://stat.bell-labs.com/RS-DBI}.
}
\seealso{
\code{\link{MySQL}},
\code{\link[DBI]{dbConnect}},
\code{\link[DBI]{dbSendQuery}},
\code{\link[DBI]{dbGetQuery}},
\code{\link[DBI]{fetch}},
\code{\link[DBI]{dbCommit}},
\code{\link[DBI]{dbGetInfo}},
\code{\link[DBI]{dbReadTable}}.
}
\examples{\dontrun{
drv <- dbDriver("MySQL")
con <- dbConnect(drv, group = "group")
rs <- dbSendQuery(con,
"delete * from PURGE as p where p.wavelength<0.03")
if(dbGetInfo(rs, what = "rowsAffected") > 250){
warning("dubious deletion -- rolling back transaction")
dbRollback(con)
}
}
}
\keyword{methods}
\keyword{interface}
\keyword{database}
% vim: syntax=tex
|
