How to Drop a SQL Server Table and Its Dependencies, Mimicking Oracle's CASCADE CONSTRAINTS PURGE?

Dropping Tables and Constraints in SQL Server

In Oracle, the DROP TABLE statement can be used with the CASCADE CONSTRAINTS PURGE option to drop a table and all its dependencies. This command completely removes the table and all its associated constraints, indexes, and triggers.

SQL Server Equivalent

SQL Server does not have a direct equivalent to the CASCADE CONSTRAINTS PURGE option. However, there is a workaround that can achieve similar results.

Step-by-Step Procedure:

1. In SQL Server Management Studio, navigate to Tools > Options.
2. Under SQL Server Object Explorer, select Scripting.
3. Enable the Generate script for dependent objects checkbox.
4. Right-click the table you want to drop.
5. Select Script Table as > DROP to > New Query Editor Window.

This will generate a script that includes both the DROP TABLE statement and the DROP statements for any dependent objects, such as constraints, indexes, and triggers.

Example:

DROP TABLE myTable;
GO
DROP INDEX idx_myTable ON myTable;
GO
DROP TRIGGER trg_myTable ON myTable;
GO

By running this script, you can achieve the same effect as the DROP TABLE CASCADE CONSTRAINTS PURGE statement in Oracle.

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