Dropping an index in SQL is a common task for database developers, especially when they need to optimize the performance, storage, or maintenance of their tables. However, dropping an index also ...

If you drop a table with indexed columns, all the indexes are automatically dropped. If you drop a composite index, the index is dropped for all the columns that are named in that index.

How to Create a Table From Query Results in Microsoft SQL. If your business uses relational databases to store data, you may have used a SQL SELECT clause to create new tables from query results.