DBMS Transaction Management
Commits or roll backs the current transaction in an MySQL connection.
Note that in MySQL DDL statements (e.g. CREATE TABLE) can not
be rolled back.
## S4 method for signature 'MySQLConnection' dbCommit(conn, ...) ## S4 method for signature 'MySQLConnection' dbBegin(conn, ...) ## S4 method for signature 'MySQLConnection' dbRollback(conn, ...)
conn |
a |
... |
Unused. |
if (mysqlHasDefault()) {
con <- dbConnect(RMySQL::MySQL(), dbname = "test")
df <- data.frame(id = 1:5)
dbWriteTable(con, "df", df)
dbBegin(con)
dbGetQuery(con, "UPDATE df SET id = id * 10")
dbGetQuery(con, "SELECT id FROM df")
dbRollback(con)
dbGetQuery(con, "SELECT id FROM df")
dbRemoveTable(con, "df")
dbDisconnect(con)
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