Deletion Operations on Tables in ODBC databases
sqlClear deletes all the rows of the table
sqlDrop removes the table
sqtable (if permitted).
sqlClear(channel, sqtable, errors = TRUE)
sqlDrop(channel, sqtable, errors = TRUE)
connection object as returned by
character string: a database table name accessible from the connected DSN. This can be a ‘dotted’ name of the form
TRUEhalt and display error, else return
These submit TRUNCATE TABLE and DROP TABLE SQL queries respectively.
‘Dotted’ table names are allowed on systems that support them
but the existence of the table is not checked and so attempting these
operations on a non-existent table will give a low-level error. (This
can be suppressed by opening the connection with
The default ‘drop’ behaviour in Oracle is to move the table to the ‘recycle bin’: use
sqlQuery(channel, "PURGE recyclebin")
to empty the recycle bin.
The current user might not have privileges to allow these operations, and Actual Technologies' Mac OS X SQLite driver has a bug causing them silently to fail.
errors = FALSE, a numeric value, invisibly.
Otherwise a character string or