SQL moving average

SQL moving average refers to calculating the average of a specific column's values over a specified number of periods. Here is an example of how you can calculate a moving average in SQL:

SELECT date_column, value_column,
       AVG(value_column) OVER (ORDER BY date_column ROWS BETWEEN 2 PRECEDING AND CURRENT ROW) AS moving_average
FROM your_table;

In this example, `date_column` represents the column with the dates or timestamps, `value_column` represents the column for which you want to calculate the moving average, and `your_table` is the name of the table containing the data.

The `AVG` function is used with the `OVER` clause to calculate the moving average. The `ROWS BETWEEN 2 PRECEDING AND CURRENT ROW` specifies that the average should be calculated including the current row and the two preceding rows.

You can adjust the number of preceding rows as per your requirement.