transactions: DBMS Transaction Management

In RMariaDB: Database Interface and MariaDB Driver

Description

Commits or roll backs the current transaction in an MariaDB connection. Note that in MariaDB DDL statements (e.g. CREATE TABLE) cannot be rolled back.

Usage

## S4 method for signature 'MariaDBConnection'
dbBegin(conn, ...)

## S4 method for signature 'MariaDBConnection'
dbCommit(conn, ...)

## S4 method for signature 'MariaDBConnection'
dbRollback(conn, ...)

Arguments

conn	a MariaDBConnection object, as produced by DBI::dbConnect().
...	Unused.

Examples

if (mariadbHasDefault()) {
  con <- dbConnect(RMariaDB::MariaDB(), dbname = "test")
  df <- data.frame(id = 1:5)

  dbWriteTable(con, "df", df, temporary = TRUE)
  dbBegin(con)
  dbExecute(con, "UPDATE df SET id = id * 10")
  dbGetQuery(con, "SELECT id FROM df")
  dbRollback(con)

  dbGetQuery(con, "SELECT id FROM df")

  dbDisconnect(con)
}

RMariaDB documentation built on Dec. 20, 2021, 9:06 a.m.