SQL List the item ID, description, and on-hand value of each item whose number of units on hand is more than the average number of units on hand for all items. The output table should have the following column headers: ITEM_ID, DESCRIPTION, and ON_HAND_VALUE. Make sure to create a sub-query to get the average on hand value of all items in the ITEM table in order to determine which items have more than the current average on hand.

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Multiple Table

In a database, a table is used to store data in the form of rows and columns. Rows are aligned horizontally and identified by one or more values in a specific column. Columns are vertically aligned and identified by a unique column name.