dbGetRowsAffected {DBI}R Documentation

The number of rows affected

Description

This method returns the number of rows that were added, deleted, or updated by a data manipulation statement.

Usage

dbGetRowsAffected(res, ...)

Arguments

res

An object inheriting from DBIResult.

...

Other arguments passed on to methods.

Value

dbGetRowsAffected() returns a scalar number (integer or numeric), the number of rows affected by a data manipulation statement issued with dbSendStatement(). The value is available directly after the call and does not change after calling dbFetch(). For queries issued with dbSendQuery(), zero is returned before and after the call to dbFetch().

Failure modes

Attempting to get the rows affected for a result set cleared with dbClearResult() gives an error.

See Also

Other DBIResult generics: DBIResult-class, dbBind(), dbClearResult(), dbColumnInfo(), dbFetch(), dbGetInfo(), dbGetRowCount(), dbGetStatement(), dbHasCompleted(), dbIsReadOnly(), dbIsValid(), dbQuoteIdentifier(), dbQuoteLiteral(), dbQuoteString(), dbUnquoteIdentifier()

Examples

con <- dbConnect(RSQLite::SQLite(), ":memory:")

dbWriteTable(con, "mtcars", mtcars)
rs <- dbSendStatement(con, "DELETE FROM mtcars")
dbGetRowsAffected(rs)
nrow(mtcars)

dbClearResult(rs)
dbDisconnect(con)

[Package DBI version 1.1.2 Index]