DROP SCHEMA removes schemas from the database. The Oracle DROP USER CASCADE command drops a user and all owned objects. This will allow you to DROP ALL Schema objects, and THEN you'll have to add a DROP SCHEMA [schemaname=@schema] after this script executes.. (I use a guid for Schema names, so if you DONT you'll have to change the @schema to varchar or sysname works and get rid of CAST(@schema)) A schema can only be dropped by its owner or a superuser. With CASCADE, the system drops all schemas that have user_name as the owner, in addition to dropping the user_name. Use the CASCADE parameter to drop a schema containing one or more objects. schema [,…] [ CASCADE | RESTRICT ] Parameters To delete the schema, we will first drop the dependent object, and for this, we will right-click on the myschema and select the Drop cascaded option from the given drop-down list. The invalidated object can be revalidated when an object that has same schema name is created. This will only drop the specified schema, dependent objects of the schema will be invalidated but not dropped. Examples RESTRICT is the default. If you don’t specify the schema name explicitly, the statement assumes that you are removing the table from your own schema. DROP SCHEMA. When is not specified a non-cascaded drop will be performed. If you want to delete schema only when it is empty, you can use the RESTRICT option. Be sure that you want to remove the schema before you drop it, because DROP SCHEMA is an irreversible process. DROP SCHEMA name RESTRICT. Example. In this syntax: First, specify the name of the schema from which you want to remove after the DROP SCHEMA keywords. SQL Server: how to drop a schema and cascade the delete operation to all its objects? Step5 The drop cascade schema popup window will appear on the screen, where we click on the Yes button for deleting the dependent objects. Syntax DROP SCHEMA [ IF EXISTS ] [database.] ; Third, use CASCADE to delete schema and all of its objects, and in turn, all objects that depend on those objects. Specify CASCADE to drop all objects in the user's schema before dropping the user. RESTRICT returns a warning about existing foreign key references and does not drop the schema. In the following example, the schema "joeschma" is dropped: So, here's an update to your script for MSSQL. The RESTRICT keyword is not optional. In Oracle: drop user schema2 cascade How to achieve the same in SQL Server? The command line syntax for dropping a user can be seen below: DROP USER edward CASCADE; If a user owns any database objects, that user can only be dropped with the Oracle DROP USER CASCADE command. You must specify this clause to drop a user whose schema contains any objects. Syntax: DROP SCHEMA [IF EXISTS] schema_name [ CASCADE | RESTRICT ]; Let’s analyze the above syntax: First, specify the name of the schema from which you want to remove after the DROP SCHEMA keywords. ; Second, use the IF EXISTS option to conditionally delete schema only if it exists. DROP {DATABASE | SCHEMA} [IF EXISTS] db_name Drop schema in PostgreSQL 9.3.13. In order to drop a user, you must have the Oracle DROP USER system privilege. DROP TABLE schema_name.table_name [CASCADE CONSTRAINTS | PURGE]; In this statement: First, indicate the table and its schema that you want to drop after the DROP TABLE clause. Syntax: DROP SCHEMA [ IF EXISTS ] name [, ...] [ CASCADE | RESTRICT ] Drop schema in SQL Server 2014. If RESTRICT is specified and if any schemas have user_name specified, the system does not drop the user and the schema. CASCADE drops the schema and all objects in the schema, including tables with primary/unique keys that are referenced by foreign keys in other tables. 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