How to Achieve Oracle's CASCADE CONSTRAINTS PURGE Functionality in SQL Server?

Dropping Tables and Constraints in SQL Server: A Comparison to Oracle's CASCADE

In Oracle, the DROP TABLE command with the CASCADE CONSTRAINTS PURGE option provides a convenient way to delete tables and their associated constraints. This action effectively removes the table and all objects that depend on it. When seeking a similar functionality in SQL Server, the approach is slightly different.

To drop a table in SQL Server, the DROP TABLE command is used. However, it does not automatically remove dependent objects. Instead, these dependencies need to be manually identified and dropped separately.

To achieve a similar effect to Oracle's CASCADE option, SQL Server Management Studio provides a solution. By enabling the 'Generate script for dependent objects' option under Options / SQL Server Object Explorer / Scripting, you can instruct the software to generate a script that includes all dependencies when dropping a table.

To use this feature, right-click the target table, select Script > Drop To > New Query Window. SQL Server Management Studio will create a script containing the necessary commands to drop the table and its dependent objects.

It is important to note that the script generated by this method may not be identical to the one generated by Oracle with the CASCADE option. However, it achieves the same goal of deleting the table and its dependencies in a single operation.

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