How do you use the CURDATE function in SQL?

The CURDATE function in SQL is used to return the current date.

The CURDATE function is a built-in function in SQL that is used to fetch the current date. This function does not require any parameters and it returns the current date in the format 'YYYY-MM-DD'. It is a very useful function when you need to work with dates and times in SQL.

To use the CURDATE function, you simply need to include it in your SQL query. For example, if you want to select all records from a table where the date is greater than the current date, you would use a query like this:

```
SELECT * FROM table_name WHERE date_column > CURDATE();
```

In this query, 'table_name' is the name of your table and 'date_column' is the name of the column in your table that contains the dates you want to compare with the current date. The CURDATE function is used in the WHERE clause of the SQL statement to compare the date in 'date_column' with the current date.

You can also use the CURDATE function in the SELECT statement itself. For example, if you want to display the current date along with the other columns in your query, you would use a query like this:

```
SELECT column1, column2, CURDATE() as 'Current Date' FROM table_name;
```

In this query, 'column1' and 'column2' are the names of the columns you want to select from your table. The CURDATE function is used in the SELECT statement to return the current date. The 'as' keyword is used to give a name to the column that displays the current date.

The CURDATE function is a very useful tool in SQL for working with dates. It allows you to easily fetch the current date and use it in your SQL queries.