The DROP SCHEMA statement could be used to delete a schema from a database. SQL Server have some built-in schema, for example : dbo, guest, sys, and INFORMATION_SCHEMA which cannot be deleted.
DROP SCHEMA [IF EXISTS] schema_name;
Note : Delete all objects from the schema before dropping the schema. If the schema have any object in it, the output will be an error.
Let us create a new schema named geeksh (https://www.geeksforgeeks.org/create-schema-in-sql-server/);
CREATE SCHEMA geeksh; GO
Now create a table named geektab inside the geeksh schema :
CREATE TABLE geeksh.geektab (id INT PRIMARY KEY, date DATE NOT NULL, city varchar(200) NOT NULL);
Drop the schema geeksh :
DROP SCHEMA geeksh;
SQL Server will throw similar error as the schema is not empty.
Msg 3729, Level 16, State 1, Line 1 Cannot drop schema 'geeksh' because it is being referenced by object 'geektab'.
Let us drop the table geeksh.geektab :
DROP TABLE geeksh.geektab;
Again run the DROP SCHEMA again to drop the geeksh schema :
DROP SCHEMA IF EXISTS geeksh;
Now, the geeksh schema has been deleted from the database.
Attention reader! Don’t stop learning now. Get hold of all the important CS Theory concepts for SDE interviews with the CS Theory Course at a student-friendly price and become industry ready.