UNION or UNION ALL
You may be familiar with the UNION operator in Oracle SQL, but are aware of the UNION ALL operator? Perhaps you will be surprised to hear that more often than not when you write UNION, what you meant to use …
You may be familiar with the UNION operator in Oracle SQL, but are aware of the UNION ALL operator? Perhaps you will be surprised to hear that more often than not when you write UNION, what you meant to use …