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Junaid A
COALESCE is a SQL function used to return the first non-null expression among its arguments. It's typically used with columns in database queries. If you want to use COALESCE to handle images in a SQL query, you would usually use it with columns that store image data or image URLs.
Here's a hypothetical example assuming you have a table named Images with columns ImageURL1, ImageURL2, and ImageURL3:
sqlCopy code<code>SELECT COALESCE(ImageURL1, ImageURL2, ImageURL3) AS DisplayImage FROM Images WHERE ImageID = 123; </code>
In this example, COALESCE is used to select the first non-null image URL among ImageURL1, ImageURL2, and ImageURL3 for the record with ImageID equal to 123.
However, displaying images is usually done in the context of a programming language and a web or application framework, not directly within SQL. In a programming language, you would fetch the image URL from the database using a query similar to the one above, and then use the retrieved URL to display the image in your application
