transactions: DBMS Transaction Management

In r-dbi/RMariaDB: Database Interface and MariaDB Driver

DBMS Transaction Management

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)
}

r-dbi/RMariaDB documentation built on Dec. 15, 2024, 12:12 p.m.