Commit in SQL | Structured Query Language

In SQL (Structured Query Language), the COMMIT statement is used to permanently save changes made in a transaction to the database. A transaction is a series of database operations that are treated as a single unit of work. The COMMIT statement marks the end of a transaction and makes all changes made in that transaction permanent.

The basic syntax of the COMMIT statement is as follows:

```
COMMIT;
```

The COMMIT statement does not have any parameters or arguments. It simply marks the end of the transaction and commits all changes made in that transaction.

For example, if you have a transaction that inserts a new record into a table, updates an existing record, and deletes another record, you can use the following SQL statements to execute the transaction and commit the changes:

```
START TRANSACTION;
INSERT INTO mytable (col1, col2) VALUES ('value1', 'value2');
UPDATE mytable SET col1 = 'newvalue1' WHERE col2 = 'value2';
DELETE FROM mytable WHERE col1 = 'oldvalue1';
COMMIT;
```

The START TRANSACTION statement starts the transaction, and the COMMIT statement marks the end of the transaction and commits all changes made in that transaction.

Note that if there is an error or exception during the execution of the transaction, the changes made up to that point will not be committed. Instead, they will be rolled back and the database will be returned to its previous state before the transaction began. To explicitly roll back a transaction, you can use the ROLLBACK statement.