Clear a result set

Description

Frees all resources (local and remote) associated with a result set. In some cases (e.g., very large result sets) this can be a critical step to avoid exhausting resources (memory, file descriptors, etc.)

Usage

dbClearResult(res, ...)

Arguments

Value

dbClearResult() returns TRUE, invisibly, for result sets obtained from both dbSendQuery() and dbSendStatement(). An attempt to close an already closed result set issues a warning in both cases.

Specification

dbClearResult() frees all resources associated with retrieving the result of a query or update operation. The DBI backend can expect a call to dbClearResult() for each dbSendQuery() or dbSendStatement() call.

See Also

Other DBIResult generics: DBIResult-class, dbBind, dbColumnInfo, dbFetch, dbGetInfo, dbGetRowCount, dbGetRowsAffected, dbGetStatement, dbHasCompleted, dbIsValid, dbQuoteIdentifier, dbQuoteString

Examples

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

rs <- dbSendQuery(con, "SELECT 1")
print(dbFetch(rs))

dbClearResult(rs)
dbDisconnect(con)