Does drop table require commit?

Does drop table require commit?

( ALTER FUNCTION can only be used with stored functions.) CREATE TABLE and DROP TABLE statements do not commit a transaction if the TEMPORARY keyword is used. ... This means that a ROLLBACK from the user does not undo CREATE TABLE statements the user made during that transaction.

Is Drop Auto commit?

It is autocommit statement. Drops Once fired can not be rolled back. Truncate is the command used to delete all record from table. but the structure of the table remain same.It is also a autocommit statement.

Is commit necessary after insert?

So yes, by default, if you're just using INSERT , the records you insert will be committed, and there is no point trying to roll them back. (This is effectively the same as wrapping each statement between BEGIN and COMMIT .)

Is drop DDL or DML?

DROP and TRUNCATE are DDL commands, whereas DELETE is a DML command. DELETE operations can be rolled back (undone), while DROP and TRUNCATE operations cannot be rolled back.

Which is faster DELETE or TRUNCATE?

TRUNCATE is faster than DELETE , as it doesn't scan every record before removing it. TRUNCATE TABLE locks the whole table to remove data from a table; thus, this command also uses less transaction space than DELETE .

Which is faster DELETE or truncate?

TRUNCATE is faster than DELETE , as it doesn't scan every record before removing it. TRUNCATE TABLE locks the whole table to remove data from a table; thus, this command also uses less transaction space than DELETE .

Does grant require commit?

If you give grant to a table or create synonym for a table, thats it. It will be there unless you drop it or drop schema. If you do any table updation/deletion/insertion then you need to commit the session. That means for all DDL you no need commit.

Can ROLLBACK be done after commit?

Until you commit a transaction: ... After you commit the transaction, the changes are visible to other users' statements that execute after the commit. You can roll back (undo) any changes made during the transaction with the ROLLBACK statement (see ROLLBACK.

Can we ROLLBACK to savepoint after commit?

You can only roll back to the most recently marked savepoint. An implicit savepoint is marked before executing an INSERT , UPDATE , or DELETE statement. If the statement fails, a rollback to the implicit savepoint is done.

Is DELETE a DDL command?

DROP and TRUNCATE are DDL commands, whereas DELETE is a DML command. DELETE operations can be rolled back (undone), while DROP and TRUNCATE operations cannot be rolled back.

Can a drop table be used to drop a table?

• Is the name of the table to be removed. DROP TABLE cannot be used to drop a table that is referenced by a FOREIGN KEY constraint. The referencing FOREIGN KEY constraint or the referencing table must first be dropped.

Do you have to have drop any table privilege?

• The table must be in your own schema or you must have the DROP ANY TABLE system privilege. You can perform DDL operations (such as ALTER TABLE, DROP TABLE, CREATE INDEX) on a temporary table only when no session is bound to it. A session becomes bound to a temporary table by performing an INSERT operation on the table.

What does the DROP TABLE statement do in Oracle?

• DROP TABLE. Use the DROP TABLE statement to move a table or object table to the recycle bin or to remove the table and all its data from the database entirely. For an external table, this statement removes only the table metadata in the database.

Is it necessary to drop temporary tables in SQL Server?

• Since SQL Server 2005 there is no need to drop a temporary tables, even more if you do it may requires addition IO. The MS introduce temp caching that should reduce the costs associated with temp table creation. The second temp table creation is much faster. of dropping and creating the table it simply truncates it.