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Microsoft's SQL Server has a handy command that rebuilds all indexes in a table. Oracle users typically rebuild each index in a table individually. How to Export the Insert Statements in MySQL.
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 ...
To create a clustered index in SQL, use the `CREATE CLUSTERED INDEX` statement followed by the index name and the table name along with the column(s) on which the index will be created.
Removing duplicates from a SQL Server table without a unique index: It’s a bit more difficult to remove duplicate rows or tables without a unique index. In this scenario, using a common table ...
360) in Orlando in December. We recently got a chance to ask him more about one of his sessions dealing with best practices for indexing SQL Server tables. Your upcoming session at SQL Server Live!/ ...
When you are temporarily landing data on SQL Data Warehouse, you may find that using a heap table will make the overall process faster. This is because loads to heaps are faster than to index tables ...
SAS maintains indexes for all changes to the table, whether the changes originate from PROC SQL or from some other source. Therefore, if you alter a column's definition or update its values, the same ...
Analyze database contents using basic, intermediate and advanced SQL statement syntax and usage. Demonstrate capability to query data from multiple tables using SQL JOINS. Create and modify database ...
Prior to Oracle8, the use of a built-in function would not be able to match the performance of an index. Consequently, Oracle would perform the dreaded full-table scan. Examples of SQL with ...