To improve query speed, use the UNION ALL statement. UNION ALL looks for and discards duplicate rows in the result set, whereas the UNION statement does not.
Home » Use UNION ALL Instead of UNION
To improve query speed, use the UNION ALL statement. UNION ALL looks for and discards duplicate rows in the result set, whereas the UNION statement does not.
At DevX, we’re dedicated to tech entrepreneurship. Our team closely follows industry shifts, new products, AI breakthroughs, technology trends, and funding announcements. Articles undergo thorough editing to ensure accuracy and clarity, reflecting DevX’s style and supporting entrepreneurs in the tech sphere.
See our full editorial policy.